Remexi S0375

Type: malware
Platform: Windows
Created: 17 April 2019
Last modified: 11 April 2024

Remexi is a Windows-based Trojan that was developed in the C programming language.[1]

Techniques70th pct

TacticsTop 11%

Threat groupunranked

CampaignsNone recorded

Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.

Remexi MITRE reference S0375

Application Window Discovery T1010 ↗

Remexi has a command to capture active windows on the machine and retrieve window titles.2

Discovery1 detection rules

Encrypted/Encoded File T1027.013 ↗

Remexi obfuscates its configuration data with XOR.3

Stealth1 detection rules

Exfiltration Over C2 Channel T1041 ↗

Remexi performs exfiltration over BITSAdmin, which is also used for the C2 channel.4

Exfiltration16 detection rules

Windows Management Instrumentation T1047 ↗

Remexi executes received commands with wmic.exe (for WMI commands). 5

Execution71 detection rules

Scheduled Task T1053.005 ↗

Remexi utilizes scheduled tasks as a persistence mechanism.6

Execution · Persistence · Privilege Escalation79 detection rules

Keylogging T1056.001 ↗

Remexi gathers and exfiltrates keystrokes from the machine.7

Credential Access · Collection3 detection rules

Standing S0375

Reach is how much of ATT&CK this malware touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.

Reach

Techniques1670th pct

70th percentile · 70% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.

Tactics9Top 11%

89th percentile · 89% of 825 ATT&CK software entries have this many tactics spanned or fewer.

Threat group161% tie · 22 values

61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.

Campaigns085% tie · 8 values

85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.

Coverage

Rules / technique18med41st pct

41st percentile · 59% of 825 ATT&CK software entries have more detection rules per technique.

Tests / technique5.5med

Remexi detections S0375

447 distinct rules cover the 16 techniques recorded for this malware. 329 Sigma · 118 Splunk.

16 covered by at least one rule447 distinct rules in total

Showing 1-50 of 400+ rules

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Select	Description	Category	Status	Event	OS	Product	MITRE ATT&CK	CVEs	Severity	Author	Created	Updated	ID
	Detects javaw.exe in AppData folder as used by Adwind / JRAT	Emerging	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Command and Scripting Interpreter Visual Basic JavaScript	-	high	Florian Roth (Nextron Systems), Tom Ueltschi, Jonhnathan Ribeiro, oscd.community	2017-11-10	2022-10-09	1fac1481-2dbc-48b2-9096-753c49b4ec71
	Detects javaw.exe in AppData folder as used by Adwind / JRAT	Generic	test	file_event	windows	Sysmon	Execution Command and Scripting Interpreter Visual Basic JavaScript	-	high	Florian Roth (Nextron Systems), Tom Ueltschi, Jonhnathan Ribeiro, oscd.community	2017-11-10	2022-12-02	0bcfabcb-7929-47f4-93d6-b33fb67d34d1
	Detects the removal or uninstallation of an application via "Wmic.EXE".	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Windows Management Instrumentation	-	medium	frack113	2022-01-28	2024-07-02	b53317a0-8acf-4fd1-8de8-a5401e776b96
	Detects an attempt to terminate a process via "wmic" with the "call terminate" flag. (...)	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Windows Management Instrumentation	-	medium	Nasreddine Bencherchali (Nextron Systems)	2023-09-11	—	49d9671b-0a0a-4c09-8280-d215bfd30662
	Detects when AppLocker "Audit only" enforcement mode reports that an Application, DLL, Script, MSI, or Packaged-App would have been blocked if AppLocker "Enforce rules" enforcement mode was enabled.	Generic	experimental	-	windows	AppLocker	Execution Command and Scripting Interpreter PowerShell Windows Command Shell Visual Basic Python Execution User Execution Malicious File	-	medium	heyyanu	2026-03-26	—	557e3bd3-7f21-495d-8d50-7c8bdfb8041c
	Detects when AppLocker prevents the execution of an Application, DLL, Script, MSI, or Packaged-App from running.	Generic	test	-	windows	AppLocker	Execution Command and Scripting Interpreter PowerShell Windows Command Shell Visual Basic Python Execution User Execution Malicious File	-	medium	Pushkarev Dmitry	2020-06-28	2025-12-03	401e5d00-b944-11ea-8f9a-00163ecd60ae
	Detects suspicious user agent strings used in APT malware in proxy logs	Generic	test	proxy	-	-	Command and Control Application Layer Protocol Web Protocols	-	high	Florian Roth (Nextron Systems), Markus Neis	2019-11-12	2024-02-15	6ec820f2-e963-4801-9127-d8b2dce4d31b
	Detects suspicious user agent string of APT40 Dropbox tool	Emerging	test	proxy	-	-	Command and Control Application Layer Protocol Web Protocols Exfiltration Exfiltration Over Web Service Exfiltration to Cloud Storage	-	high	Thomas Patzke	2019-11-12	2023-05-18	5ba715b6-71b7-44fd-8245-f66893e81b3d
	Detects automated lateral movement by Turla group	Unsupported	unsupported	process_creation	windows	Sysmon · WinEventLog Security	Execution Command and Scripting Interpreter Discovery File and Directory Discovery Discovery Network Share Discovery Lateral Movement Remote Services SMB/Windows Admin Shares	-	medium	Markus Neis	2017-11-07	2023-02-24	75925535-ca97-4e0a-a850-00b5c00779dc
	Detects changes to the EC2 instance startup script. (...)	Generic	test	cloud_audit	-	AWS CloudTrail · AWS	Execution Command and Scripting Interpreter PowerShell Windows Command Shell Unix Shell	-	high	faloker	2020-02-12	2022-06-07	1ab3c5ed-5baf-417b-bb6b-78ca33f6c3df
	Detects the specific Windows execution chain and process tree associated with the Axios NPM supply chain compromise. (...)	Emerging	experimental	process_creation	windows	Sysmon · WinEventLog Security	Execution Command and Scripting Interpreter Windows Command Shell Visual Basic Command and Control Ingress Tool Transfer Initial Access Supply Chain Compromise Compromise Software Supply Chain	-	high	Swachchhanda Shrawan Poudel (Nextron Systems)	2026-04-01	—	f6c27ecc-d890-4452-80e6-2e274a10e097
	Detects DNS queries for the malicious C2 domain associated with the plain-crypto-js/Axios npm package supply chain compromise. (...)	Emerging	experimental	dns	-	-	Command and Control Application Layer Protocol Web Protocols Command and Control Dynamic Resolution	-	high	Swachchhanda Shrawan Poudel (Nextron Systems)	2026-04-01	—	73e5d24f-493f-4092-bd2f-c72cabda40ee
	Detects usage of the "FromBase64String" function in the commandline which is used to decode a base64 (...)	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Command and Scripting Interpreter PowerShell Stealth Deobfuscate/Decode Files or Information Stealth Obfuscated Files or Information	-	high	Florian Roth (Nextron Systems)	2020-01-29	2023-01-26	e32d4572-9826-4738-b651-95fa63747e8a
	Detects Bitsadmin connections to IP addresses instead of FQDN names	Generic	test	proxy	-	-	Command and Control Application Layer Protocol Web Protocols Execution, Persistence, Stealth BITS Jobs	-	high	Florian Roth (Nextron Systems)	2022-06-10	2022-08-24	8ccd35a2-1c7c-468b-b568-ac6cdf80eec3
	Detects Bitsadmin connections to domains with uncommon TLDs	Generic	test	proxy	-	-	Command and Control Application Layer Protocol Web Protocols Execution, Persistence, Stealth BITS Jobs	-	high	Florian Roth (Nextron Systems), Tim Shelton	2019-03-07	2026-09-30	9eb68894-7476-4cd6-8752-23b51f5883a7
	Attempts to detect system changes made by Blue Mockingbird	Emerging	test	process_creation	windows	Sysmon · WinEventLog Security	Persistence, Defense Impairment Modify Registry Execution Windows Management Instrumentation	-	high	Trent Liffick (@tliffick)	2020-05-14	2022-10-09	c3198a27-23a0-4c2c-af19-e5328d49680e
	Attempts to detect system changes made by Blue Mockingbird	Emerging	test	registry_set	windows	Sysmon · WinEventLog Security	Persistence, Defense Impairment Modify Registry Execution Windows Management Instrumentation	-	high	Trent Liffick (@tliffick)	2020-05-14	2023-08-17	92b0b372-a939-44ed-a11b-5136cf680e27
	Detects usage of "getcap" binary. (...)	Generic	test	process_creation	linux	Sysmon	Discovery File and Directory Discovery	-	low	Nasreddine Bencherchali (Nextron Systems)	2022-12-28	2026-01-24	d8d97d51-122d-4cdd-9e2f-01b4b4933530
Splunk	The following analytic detects the use of CertUtil.exe with the 'decode' argument, which may indicate an attempt to decode a previously encoded file, potentially containing malicious payloads. (...)	Generic	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike	Stealth Deobfuscate/Decode Files or Information	-	medium	Michael Haag, Splunk	2021-03-25	2026-10-02	bfe94226-8c10-11eb-a4b3-acde48001122
	Detects HTTP request used by Chafer malware to receive data from its C2.	Emerging	test	proxy	-	-	Command and Control Application Layer Protocol Web Protocols	-	high	Florian Roth (Nextron Systems)	2019-01-31	2024-02-15	fb502828-2db0-438e-93e6-801c7548686d
	Adversaries may communicate using application layer protocols associated with web traffic to avoid detection/network filtering by blending in with existing traffic. (...)	Generic	test	ps_script	windows	PowerShell	Command and Control Application Layer Protocol Web Protocols	-	medium	frack113	2022-01-23	2025-07-18	d4488827-73af-4f8d-9244-7b7662ef046e
	Detects execution of ChromeLoader malware via a registered scheduled task	Emerging	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Command and Scripting Interpreter PowerShell Execution, Persistence, Privilege Escalation Scheduled Task/Job Scheduled Task Persistence Software Extensions	-	high	@kostastsale	2022-01-10	—	0a74c5a9-1b71-4475-9af2-7829d320d5c2
Splunk	This analytic detects file copy operations to remote locations on Cisco ASA devices via CLI or ASDM. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Collection Data from Local System Exfiltration Exfiltration Over Alternative Protocol Exfiltration Over Unencrypted Non-C2 Protocol Exfiltration Exfiltration Over C2 Channel	-	medium	Nasreddine Bencherchali, Splunk	2025-11-21	2026-05-13	8a9e5f2b-6d4c-4e7f-9b3a-1c8d7f5e2a9b
	Find information about network devices that is not stored in config files	Generic	test	authentication	-	Cisco AAA · Cisco	Discovery File and Directory Discovery Discovery Password Policy Discovery Discovery Process Discovery Discovery Remote System Discovery Discovery System Information Discovery Discovery System Network Configuration Discovery Discovery System Network Connections Discovery Discovery System Owner/User Discovery Discovery System Time Discovery	-	low	Austin Clark	2019-08-12	2023-01-04	9705a6a1-6db6-4a16-a987-15b7151e299b
Splunk	This analytic detects suspicious use of 'mshta.exe' or 'rundll32.exe' invoking 'mshtml.dll' or the ' (...)	Anomaly	stable	network_connection	-	Cisco NVM · Cisco	Execution Command and Scripting Interpreter Visual Basic Stealth System Binary Proxy Execution Mshta	-	medium	Nasreddine Bencherchali, Splunk	2025-07-01	2026-09-22	f2a9df84-9b01-4a21-9e3a-7aa1a217f69e
Splunk	This analytic detects the usage of the Utility osascript on a macOS device initiated a network connection lasting longer than 10 minutes (600 seconds). (...)	Anomaly	stable	network_connection	-	Cisco NVM · Cisco	Command and Control Application Layer Protocol Web Protocols Execution Command and Scripting Interpreter AppleScript	-	medium	Radka Viskova, Splunk	2026-09-18	2026-09-22	6bc88a9d-f7de-4257-b526-acf15bc5a517
Splunk	This analytic detects script execution (`wscript.exe` or `cscript.exe`) triggered from compressed fi (...)	Anomaly	stable	network_connection	-	Cisco NVM · Cisco	Execution Command and Scripting Interpreter Visual Basic Execution User Execution Malicious File	-	medium	Nasreddine Bencherchali, Splunk	2025-07-01	2026-09-22	8b07c2c9-0cde-4c44-9fa6-59dcf2b25777
Splunk	The following analytic detects the use of known suspicious SSL certificates in any observed event where the SSL_CertFingerprint field is present. (...)	Generic	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Application Layer Protocol Web Protocols Resource Development Develop Capabilities Code Signing Certificates Command and Control Encrypted Channel Asymmetric Cryptography Resource Development Obtain Capabilities Digital Certificates	-	medium	Nasreddine Bencherchali, Splunk	2025-04-03	2026-09-22	c43f7b49-2dab-4e76-892e-7f971c2f20f1
Splunk	The following analytic detects outbound connections to commonly abused file sharing and pastebin-style hosting domains. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Application Layer Protocol Web Protocols Exfiltration Exfiltration Over Web Service Exfiltration to Cloud Storage Command and Control Ingress Tool Transfer Resource Development Obtain Capabilities Tool Command and Control Proxy External Proxy	-	medium	Nasreddine Bencherchali, Splunk	2025-04-03	2026-05-13	f7e5e792-d907-46c1-a58e-4ff974dc462a
Splunk	The following analytic detects connections with a high Encrypted Visibility Engine (EVE) threat confidence score, indicating potentially malicious behavior within encrypted traffic. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Application Layer Protocol Web Protocols Command and Control Encrypted Channel Asymmetric Cryptography Exfiltration Exfiltration Over C2 Channel Command and Control Ingress Tool Transfer	-	medium	Nasreddine Bencherchali, Splunk	2025-04-03	2026-05-13	8c15183e-2e70-4db4-86c3-88f8d9129b66
Splunk	This analytic detects intrusion events from known threat activity using Cisco Secure Firewall Intrusion Events. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Encrypted Channel Asymmetric Cryptography Exfiltration Exfiltration Over C2 Channel	-	medium	Bhavin Patel, Nasreddine Bencherchali, Splunk	2025-05-12	2026-09-22	b71e57e8-c571-4ff1-ae13-bc4384a9e891
Splunk	This analytic detects Lumma Stealer download attempts using Cisco Secure Firewall Intrusion Events. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Encrypted Channel Asymmetric Cryptography Exfiltration Exfiltration Over C2 Channel	-	medium	Nasreddine Bencherchali, Splunk, Talos NTDR	2025-04-16	2026-05-13	66f22f52-fbae-4be7-a263-561dacb63613
Splunk	This analytic detects Lumma Stealer outbound connection attempts using Cisco Secure Firewall Intrusion Events. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Encrypted Channel Asymmetric Cryptography Exfiltration Exfiltration Over C2 Channel	-	medium	Nasreddine Bencherchali, Splunk, Talos NTDR	2025-04-16	2026-05-13	66f22f52-fbae-4be7-a263-561dacb63612
Splunk	The following analytic detects potentially suspicious large volumes of data sent by the connection initiator on flows from internal to external networks. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Exfiltration Exfiltration Over Alternative Protocol Exfiltration Over Unencrypted Non-C2 Protocol Exfiltration Exfiltration Over C2 Channel Exfiltration Exfiltration Over Web Service Exfiltration to Cloud Storage	-	medium	Nasreddine Bencherchali, Splunk	2025-04-03	2026-05-13	3d8536b6-52b4-4c3e-b695-3f2e90bb22be
Splunk	The following analytic detects outbound connections initiated by command-line tools such as curl or wget. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Command and Control Application Layer Protocol Web Protocols Execution Command and Scripting Interpreter Command and Control Ingress Tool Transfer Execution, Persistence, Privilege Escalation Scheduled Task/Job Cron	-	medium	Nasreddine Bencherchali, Splunk	2025-04-03	2026-05-13	173a1cb9-1814-4128-a9dc-f29dade89957
	Detects modification of Windows Registry Classes keys used for persistence. (...)	Generic	test	registry_set	windows	Sysmon · WinEventLog Security	Persistence, Privilege Escalation Boot or Logon Autostart Execution Registry Run Keys / Startup Folder	-	medium	Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)	2019-10-25	2025-10-22	9df5f547-c86a-433e-b533-f2794357e242
	Detects access to clipboard content via osascript, which may be used for data collection but also oc (...)	Generic	test	process_creation	macos	-	Collection Clipboard Data Execution Command and Scripting Interpreter AppleScript	-	medium	Sohan G (D4rkCiph3r)	2023-01-31	2026-05-22	7794fa3c-edea-4cff-bec7-267dd4770fd7
	Detects attempts to collect image data stored in the clipboard from users with the usage of xclip tool. (...)	Generic	test	process_creation	linux	Linux Auditd	Collection Clipboard Data	-	low	Pawel Mazur	2021-10-01	2022-10-09	f200dc3f-b219-425d-a17e-c38467364816
	Detects attempts to collect data stored in the clipboard from users with the usage of xclip tool. (...)	Generic	test	process_creation	linux	Sysmon	Collection Clipboard Data	-	low	Pawel Mazur, Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC	2021-10-15	2022-09-15	ec127035-a636-4b9a-8555-0efd4e59f316
	Detects attempts to collect data stored in the clipboard from users with the usage of xclip tool. (...)	Generic	test	process_creation	linux	Linux Auditd	Collection Clipboard Data	-	low	Pawel Mazur	2021-09-24	2022-11-26	214e7e6c-f21b-47ff-bb6f-551b2d143fcf
	Detects execution of the "pbpaste" utility, which retrieves the contents of the clipboard (a.k.a. (...)	Hunting	test	process_creation	macos	-	Collection Clipboard Data	-	medium	Daniel Cortez	2024-07-30	—	d8af0da1-2959-40f9-a3e4-37a6aa1228b7
	Detects DNS requests to Cloudflared tunnels domains. (...)	Generic	test	dns	windows	Sysmon	Command and Control Application Layer Protocol Web Protocols Command and Control Protocol Tunneling	-	medium	Nasreddine Bencherchali (Nextron Systems)	2023-12-20	—	a1d9eec5-33b2-4177-8d24-27fe754d0812
Splunk	The following analytic detects the use of `cmd.exe /c` to execute commands, a technique often employed by adversaries and malware to run batch commands or invoke other shells like PowerShell. (...)	Hunting	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike	Execution Command and Scripting Interpreter Windows Command Shell	CVE-2021-44228	medium	Teoderick Contreras, Bhavin Patel, Splunk	2021-10-21	2026-05-13	54a6ed00-3256-11ec-b031-acde48001122
Splunk	The following analytic identifies the use of named-pipe impersonation for privilege escalation, commonly associated with Cobalt Strike and similar frameworks. (...)	Generic	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike	Execution Command and Scripting Interpreter Windows Command Shell Persistence, Privilege Escalation Create or Modify System Process Windows Service	-	medium	Michael Haag, Splunk	2021-05-27	2026-05-13	eb277ba0-b96b-11eb-b00e-acde48001122
	Detects a suspicious command line execution that includes an URL and AppData string in the command l (...)	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Command and Scripting Interpreter PowerShell Windows Command Shell Command and Control Ingress Tool Transfer	-	medium	Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community	2019-01-16	2021-11-27	1ac8666b-046f-4201-8aba-1951aaec03a3
	Detects modification of autostart extensibility point (ASEP) in registry.	Generic	test	registry_set	windows	Sysmon · WinEventLog Security	Persistence, Privilege Escalation Boot or Logon Autostart Execution Registry Run Keys / Startup Folder	-	medium	Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split), wagga (name)	2019-10-25	2025-10-22	f59c3faf-50f3-464b-9f4c-1b67ab512d99
	Detects PowerShell scripts that make use of the "Compress-Archive" cmdlet in order to compress folders and files. (...)	Hunting	test	ps_script	windows	PowerShell	Collection Archive Collected Data	-	low	Timur Zinniatullin, oscd.community	2019-10-21	2023-12-15	6dc5d284-69ea-42cf-9311-fb1c3932a69a
	Detects execution of "tar.exe" in order to create a compressed file. (...)	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Collection Archive Collected Data Archive via Utility	-	low	Nasreddine Bencherchali (Nextron Systems), AdmU3	2023-12-19	—	418a3163-3247-4b7b-9933-dcfcb7c52ea9
	Detects execution of "tar.exe" in order to extract compressed file. (...)	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Collection Archive Collected Data Archive via Utility	-	low	AdmU3	2023-12-19	—	bf361876-6620-407a-812f-bfe11e51e924
	Detects execution of wmic utility with the "computersystem" flag in order to obtain information about the machine such as the domain, username, model, etc.	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Execution Windows Management Instrumentation	-	medium	Nasreddine Bencherchali (Nextron Systems)	2022-09-08	2023-02-14	9d7ca793-f6bd-471c-8d0f-11e68b2f0d2f