Quad7 Activity, also known as CovertNetwork-1658 or the 7777 Botnet, is a network of compromised small office/home office (SOHO) routers. [1][2] The botnet was initially composed primarily of TP-Link routers and was named Quad7 due to compromised devices exposing TCP port 7777 with the distinctive banner xlogin. Later activity showed a significant increase in compromised Asus routers and the addition of new ports and banners, including TCP port 63256 displaying alogin. Quad7 infrastructure functions as a collection of egress IPs that various China-affiliated threat actors have used to conduct password-spraying and brute-force operations. [1][3] Microsoft has reported that Storm-0940 leveraged credentials obtained through Quad7 Activity to target organizations in North America and Europe, including government agencies, non-governmental organizations, think tanks, law firms, energy firms, IT providers, and defense industrial base entities. [2]
15
Techniques41st pct
8
Tactics48th pct
1
Tool or malware45th pct
0
Threat groupsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
Quad7 Activity has infected victim network devices by storing artifacts in the /tmp directory which is volatile in memory and will clear its contents upon shutdown or restart.6
Quad7 Activity has used the same User Agents of Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko and Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36 combined with a reference to the Microsoft Azure PowerShell Application ID 1950a258-227b-4e31-a9cf-717495945fc2 in their sign-in attempts.9
Quad7 Activity has routed traffic through chains of compromised network devices for password spray attacks.13
Command and Control6 detection rules
Standing C0055
Reach is how much of ATT&CK this campaign 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 56 ATT&CK campaigns 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
Techniques1541st pct
41st percentile · 59% of 56 ATT&CK campaigns have more Enterprise techniques.
Tactics848th pct
48th percentile · 52% of 56 ATT&CK campaigns have more tactics spanned.
Tool or malware145th pct
45th percentile · 55% of 56 ATT&CK campaigns have more tools and malware.
Threat groups055% tie · 3 values
55% of the population shares a single value across only 3 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
Rules / technique6medBottom 14%
14th percentile · 86% of 56 ATT&CK campaigns have more detection rules per technique.
Tests / technique0medBottom 23%
23rd percentile · 77% of 56 ATT&CK campaigns have more atomic tests per technique.
Data comps / technique5med43% tie · 7 values
43% of the population shares a single value across only 7 distinct values, so a percentile here would rank the tie, not the entity.
Mitigations / technique1med38th pct
38th percentile · 62% of 56 ATT&CK campaigns have more mitigations per technique.
6 of 8 axes carry an honest rank on this page. Coverage medians are taken across this campaign’s 15 Enterprise techniques.
Range
Technique Campaign use over its cumulative rule count.
826 distinct rules cover the 15 techniques recorded for this campaign. 483 Sigma · 343 Splunk.
12 covered by at least one rule3 with no coverage826 distinct rules in total
Showing 1-50 of 800+ rules
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The following analytic identifies access to the /api/v1/configuration/users/user-roles/user-role/rest-userrole1/web/web-bookmarks/bookmark endpoint, which is associated with CVE-2023-46805 and CVE-2024-21887 vulnerabilities. (...)
The following analytic detects potential exploitation of the Adobe ColdFusion vulnerability, CVE-2023-26360, which allows unauthenticated arbitrary file read. (...)
Detects successful deletion or disabling of an AWS GuardDuty detector, possibly by an attacker trying to avoid detection of its malicious activities. (...)
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. (...)
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.
The following analytic identifies a single source IP failing to authenticate with multiple valid users, potentially indicating a Password Spraying attack against an Azure Active Directory tenant. (...)