malware

Remsec S0125

Type: malware
Platform: Windows
Created: 31 May 2017
Last modified: 12 May 2026

Remsec is a modular backdoor that has been used by Strider and appears to have been designed primarily for espionage purposes. Many of its modules are written in Lua. [1]

TechniquesTop 8%

TacticsTop 6%

Threat groupunranked

CampaignsNone recorded

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

Remsec MITRE reference S0125

Security Account Manager T1003.002 ↗

Remsec can dump the SAM database.2

Credential Access36 detection rules

System Network Configuration Discovery T1016 ↗

Remsec can obtain information about network configuration, including the routing table, ARP cache, and DNS cache.3

Discovery25 detection rules

Remote System Discovery T1018 ↗

Remsec can ping or traceroute a remote host.4

Discovery39 detection rules

Data from Removable Media T1025 ↗

Remsec has a package that collects documents from any inserted USB sticks.5

Collection3 detection rules

Encrypted/Encoded File T1027.013 ↗

Some data in Remsec is encrypted using RC5 in CBC mode, AES-CBC with a hardcoded key, RC4, or Salsa20. Some data is also base64-encoded.6 7

Stealth1 detection rules

System Owner/User Discovery T1033 ↗

Remsec can obtain information about the current user.8

Discovery47 detection rules

Standing S0125

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

Techniques30Top 8%

92nd percentile · 92% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.

Tactics10Top 6%

94th percentile · 94% 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 / technique25.5med62nd pct

62nd percentile · 62% of 825 ATT&CK software entries have this many detection rules per technique or fewer.

Tests / technique7.5med64th pct

64th percentile · 64% of 825 ATT&CK software entries have this many atomic tests per technique or fewer.

Data comps / technique4med54% tie · 11 values

54% of the population shares a single value across only 11 distinct values, so a percentile here would rank the tie, not the entity.

Mitigations / technique1.5med65th pct

65th percentile · 65% of 825 ATT&CK software entries have this many mitigations per technique or fewer.

5 of 8 axes carry an honest rank on this page. Coverage medians are taken across this malware’s 30 Enterprise techniques.

Range

Technique Campaign use over its cumulative rule count.

Campaigns · 0Sigma rules (cumulative) · 510Splunk ESCU (cumulative) · 285

Standing S0125

Select	Description	Category	Status	Event	OS	Product	MITRE ATT&CK	CVEs	Severity	Author	Created	Updated	ID	Refs
	Detects when a single rules or all of the rules have been deleted from the Windows Defender Firewall	Generic	test	-	windows	Windows Firewall	Defense Impairment Disable or Modify System Firewall Windows Host Firewall	-	medium	frack113	2022-02-19	2024-08-29	c187c075-bb3e-4c62-b4fa-beae0ffc211f
	Detects usage of the "Get-AdComputer" to enumerate Computers or properties within Active Directory.	Generic	test	ps_script	windows	PowerShell	Discovery Account Discovery Domain Account Discovery Remote System Discovery	-	low	frack113	2022-03-17	2023-07-08	36bed6b2-e9a0-4fff-beeb-413a92b86138
	Detects the degradation of the system firewall security by the creation or re-enabling of per-applic (...)	Generic	experimental	registry_set	windows	Sysmon · WinEventLog Security	Defense Impairment Disable or Modify System Firewall Windows Host Firewall	-	medium	frack113	2026-10-13	—	6648f900-4a7d-47e3-bad6-952b313a1c0e
	Detects the deletion of the "Zone.Identifier" ADS. (...)	Hunting	test	file_delete	windows	Sysmon	Stealth Indicator Removal File Deletion	-	low	frack113	2023-09-04	—	7eac0a16-5832-4e81-865f-0268a6d19e4b
	Detects the deletion of the "Zone.Identifier" ADS by an uncommon process. (...)	Generic	test	file_delete	windows	Sysmon	Stealth Indicator Removal File Deletion	-	medium	Nasreddine Bencherchali (Nextron Systems)	2023-09-04	2025-07-04	3109530e-ab47-4cc6-a953-cac5ebcc93ae
Splunk	The following analytic detects the execution of network scanning utilities such as Advanced IP Scanner or Advanced Port Scanner. (...)	Anomaly	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike	Discovery Network Service Discovery Discovery Network Share Discovery	-	medium	Nasreddine Bencherchali, Splunk	2025-10-24	2026-05-13	9a4e50c7-5b62-4d52-93b4-f2b61332e9a5
	Detects the use of Advanced IP Scanner. (...)	Generic	test	file_event	windows	Sysmon	Discovery Network Service Discovery	-	medium	@ROxPinTeddy	2020-05-12	2022-11-29	fed85bf9-e075-4280-9159-fbe8a023d6fa
	Detects when a all the rules have been deleted from the Windows Defender Firewall configuration	Generic	test	-	windows	Windows Firewall	Defense Impairment Disable or Modify System Firewall Windows Host Firewall	-	high	frack113, Nasreddine Bencherchali (Nextron Systems)	2023-01-17	2024-01-22	79609c82-a488-426e-abcf-9f341a39365d
	Detects the degradation of the system firewall security by the DoNotAllowExceptions policy value bei (...)	Generic	experimental	registry_set	windows	Sysmon · WinEventLog Security	Defense Impairment Disable or Modify System Firewall Windows Host Firewall	-	medium	frack113	2026-10-13	—	c69fc6a2-607d-4530-b7d1-75823af1bde4
	Detects a highly relevant Antivirus alert that reports password dumpers and stealers. (...)	Generic	stable	antivirus	-	-	Credential Access OS Credential Dumping LSASS Memory Security Account Manager Credential Access Steal or Forge Kerberos Tickets	-	critical	Florian Roth (Nextron Systems), Arnim Rupp	2018-09-09	2026-06-15	78cc2dd2-7d20-4d32-93ff-057084c38b93
	Detects DNS queries made by "AppInstaller.EXE". (...)	Generic	test	dns	windows	Sysmon	Command and Control Ingress Tool Transfer	-	medium	frack113	2021-11-24	2023-11-09	7cff77e1-9663-46a3-8260-17f2e1aa9d0a
	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 execution of GfxDownloadWrapper.exe with a URL as an argument to download file.	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Command and Control Ingress Tool Transfer	-	medium	Victor Sergeev, oscd.community	2020-10-09	2023-10-18	eee00933-a761-4cd0-be70-c42fe91731e7
Splunk	The following analytic detects the execution of tools commonly exploited by cybercriminals, such as those used for unauthorized access, network scanning, privilege escalation, password dumping or data exfiltration. (...)	Generic	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike · Cisco NVM · Cisco	Reconnaissance Active Scanning Stealth Masquerading Match Legitimate Resource Name or Location Credential Access OS Credential Dumping	-	medium	Bhavin Patel, Splunk, sventec, Github Community	2021-07-12	2026-09-22	a51bfe1a-94f0-48cc-b4e4-16a110145893	-
	Detects events generated by user-mode applications when they call the CveEventWrite API when a known vulnerability is trying to be exploited. (...)	Generic	test	-	windows	WinEventLog Application	Impact Endpoint Denial of Service Application or System Exploitation Execution Exploitation for Client Execution Credential Access Exploitation for Credential Access Privilege Escalation Exploitation for Privilege Escalation Stealth Exploitation for Stealth Lateral Movement Exploitation of Remote Services	CVE-2020-0601	critical	Florian Roth (Nextron Systems), Zach Mathis	2020-01-15	2022-10-22	48d91a3a-2363-43ba-a456-ca71ac3da5c2
	Detects kernel auto-loading of the authencesn crypto module via modprobe This occurs when user-space (...)	Emerging	experimental	process_creation	linux	Sysmon	Persistence, Privilege Escalation Boot or Logon Autostart Execution Kernel Modules and Extensions Privilege Escalation Exploitation for Privilege Escalation	CVE-2026-31431	high	Gene Kazimiarovich	2026-05-09	—	474b415a-d917-4f3b-8c62-9e1a0d5f7b48
	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 file creation events linked to the Axios NPM supply chain compromise. (...)	Emerging	experimental	file_event	linux	Sysmon	Command and Control Ingress Tool Transfer Initial Access Supply Chain Compromise Compromise Software Supply Chain	-	high	Swachchhanda Shrawan Poudel (Nextron Systems)	2026-04-01	—	b7cb840c-11f6-47f7-b3ef-5524739c9077
	Detects file creation events linked to the Axios NPM supply chain compromise on macOS devices. (...)	Emerging	experimental	file_event	macos	-	Command and Control Ingress Tool Transfer Initial Access Supply Chain Compromise Compromise Software Supply Chain	-	high	Swachchhanda Shrawan Poudel (Nextron Systems)	2026-04-01	—	2db0458c-05c9-4069-a26f-77becd9c8c13
	Detects the Linux-specific execution chain of the plain-crypto-js malicious npm dependency by Axios NPM package, including payload download via curl and detached execution using nohup and python3. (...)	Emerging	experimental	process_creation	linux	Sysmon	Execution Command and Scripting Interpreter Unix Shell Python Command and Control Ingress Tool Transfer Initial Access Supply Chain Compromise Compromise Software Supply Chain	-	high	Swachchhanda Shrawan Poudel (Nextron Systems)	2026-04-01	—	0a23a62d-c5b3-468b-a072-25064a9a8c87
	Detects the macOS-specific execution chain of the plain-crypto-js malicious npm dependency in Axios NPM Package, including AppleScript execution via osascript, payload download, permission modification, execution, and cleanup.	Emerging	experimental	process_creation	macos	-	Execution Command and Scripting Interpreter AppleScript Unix Shell Command and Control Ingress Tool Transfer Initial Access Supply Chain Compromise Compromise Software Supply Chain	-	high	Swachchhanda Shrawan Poudel (Nextron Systems)	2026-04-01	—	a09ee860-31b3-4586-8a68-0ebd74ce0e5f
	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
Splunk	The following analytic detects the assignment of the Privileged Authentication Administrator role to an Azure AD user. (...)	Generic	stable	account_management	-	Microsoft 365	Credential Access OS Credential Dumping Security Account Manager	-	medium	Mauricio Velazco, Gowthamaraj Rajendran, Splunk	2023-04-25	2026-05-13	a7da845d-6fae-41cf-b823-6c0b8c55814a
Splunk	The following analytic detects the assignment of high-risk Graph API permissions in Azure AD, specifically Application.ReadWrite.All, AppRoleAssignment.ReadWrite.All, and RoleManagement.ReadWrite.Directory. (...)	Generic	stable	service	-	Microsoft 365	Credential Access OS Credential Dumping Security Account Manager	-	medium	Mauricio Velazco, Splunk	2024-02-14	2026-05-13	5521f8c5-1aa3-473c-9eb7-853701924a06
	Detects backup catalog deletions	Generic	test	-	windows	WinEventLog Application	Stealth Indicator Removal File Deletion	-	medium	Florian Roth (Nextron Systems), Tom U. @c_APT_ure (collection)	2017-05-12	2022-12-25	9703792d-fd9a-456d-a672-ff92efe4806a
	Detects user data export activity.	Generic	test	cloud_audit	-	Bitbucket Audit · Bitbucket	Collection Data from Information Repositories Reconnaissance Gather Victim Org Information Identify Roles Discovery System Information Discovery	-	medium	Muhammad Faisal (@faisalusuf)	2024-02-25	—	5259cbf2-0a75-48bf-b57a-c54d6fabaef3
	Detects user permission data export attempt.	Generic	test	cloud_audit	-	Bitbucket Audit · Bitbucket	Collection Data from Information Repositories Reconnaissance Gather Victim Org Information Identify Roles Discovery System Information Discovery	-	medium	Muhammad Faisal (@faisalusuf)	2024-02-25	—	87cc6698-3e07-4ba2-9b43-a85a73e151e2
Splunk	The following analytic detects the use of `bitsadmin.exe` with the `transfer` parameter to download a remote object. (...)	Generic	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike	Execution, Persistence, Stealth BITS Jobs Command and Control Ingress Tool Transfer	-	medium	Michael Haag, Sittikorn S	2021-03-30	2026-10-02	80630ff4-8e4c-11eb-aab5-acde48001122
	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
	Detects default file names outputted by the BloodHound collection tool SharpHound	Generic	test	file_event	windows	Sysmon	Discovery Account Discovery Local Account Domain Account Execution Command and Scripting Interpreter PowerShell Discovery Domain Trust Discovery Discovery Permission Groups Discovery Local Groups Domain Groups	-	high	C.J. May	2022-08-09	2026-02-19	02773bed-83bf-469f-b7ff-e676e7d78bab
	Detects execution of Chromium based browser in headless mode	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Stealth Hide Artifacts Hidden Window Command and Control Ingress Tool Transfer	-	low	Nasreddine Bencherchali (Nextron Systems)	2023-09-12	—	ef9dcfed-690c-4c5d-a9d1-482cd422225c
	Detects buffer overflow attempts in Unix system log files	Generic	test	-	linux	-	Privilege Escalation Exploitation for Privilege Escalation	-	high	Florian Roth (Nextron Systems)	2017-03-01	2025-03-17	18b042f0-2ecd-4b6e-9f8d-aa7a7e7de781
	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
	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
Splunk	The following analytic identifies the execution of the "whoami" command with the "/group" flag, where the results are passed to the "find" command in order to look for a the string "12288". (...)	Generic	stable	process_creation	windows	Sysmon · WinEventLog Security · CrowdStrike	Discovery System Owner/User Discovery	-	medium	Teoderick Contreras, Splunk	2021-09-14	2026-05-13	a9079b18-1633-11ec-859c-acde48001122	-
	Detects patterns found in process executions cause by China Chopper like tiny (ASPX) webshells	Generic	test	process_creation	windows	Sysmon · WinEventLog Security	Discovery Account Discovery Discovery Remote System Discovery Persistence Server Software Component Web Shell Discovery System Owner/User Discovery	CVE-2022-41040 CVE-2022-41082	high	Florian Roth (Nextron Systems), MSTI (query)	2022-10-01	—	fa3c117a-bc0d-416e-a31b-0c0e80653efb
	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
Splunk	This analytic detects potential reconnaissance activities on Cisco ASA devices by identifying execution of multiple information-gathering "show" commands within a short timeframe. (...)	Anomaly	stable	firewall	-	Cisco Secure Firewall · Cisco	Reconnaissance Gather Victim Network Information Domain Properties IP Addresses Discovery System Information Discovery	-	medium	Nasreddine Bencherchali, Splunk	2025-11-21	2026-05-13	6e9d4f7a-3c8b-4a9e-8d2f-7b5c9e1a6f3d
	Collect pertinent data from the configuration files	Generic	test	authentication	-	Cisco AAA · Cisco	Discovery Account Discovery Local Account Collection Data from Local System Credential Access Unsecured Credentials Credentials In Files	-	low	Austin Clark	2019-08-11	2023-01-04	cd072b25-a418-4f98-8ebc-5093fb38fe1a
	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
	See what files are being deleted from flash file systems	Generic	test	authentication	-	Cisco AAA · Cisco	Impact Disk Wipe Disk Content Wipe Disk Structure Wipe Stealth Indicator Removal File Deletion	-	medium	Austin Clark	2019-08-12	2023-01-04	71d65515-c436-43c0-841b-236b1f32c21e	-
Splunk	This analytic detects bursts of Cisco IOS or NX-OS discovery commands associated with Salt Typhoon tradecraft. (...)	Anomaly	stable	network_device	-	Cisco IOS · Cisco	Reconnaissance Gather Victim Network Information Discovery System Information Discovery Discovery System Network Configuration Discovery	-	medium	Nasreddine Bencherchali	2026-05-19	2026-05-20	71ac5328-2364-40cf-8381-92b8dc531399
Splunk	This analytic detects bursts of ping, SSH, and Telnet commands issued from Cisco IOS or NX-OS devices. (...)	Anomaly	stable	network_device	-	Cisco IOS · Cisco	Discovery Network Service Discovery Lateral Movement Remote Services SSH Discovery Remote System Discovery	-	medium	Nasreddine Bencherchali	2026-05-19	2026-05-20	efb20922-17bc-4fb0-880c-be50cfc100dd
Splunk	The following analytic detects the execution of curl commands with insecure flags within the Cisco Isovalent environment. (...)	Anomaly	stable	process_creation	-	Cisco	Command and Control Ingress Tool Transfer	-	medium	Bhavin Patel, Splunk	2026-01-05	2026-10-02	c16c4899-d3f7-461b-92c2-cc0ef5758855
Splunk	This analytic detects excessive kernel probe (kprobe) events in a Kubernetes cluster over a short period of time. (...)	Hunting	stable	network_device	-	Cisco	Privilege Escalation Exploitation for Privilege Escalation	-	medium	Bhavin Patel, Splunk	2026-01-05	2026-05-13	3df0e9a8-7d5e-4b2f-bcd7-bf93e671d1f2