Daily Summary
Snake Keylogger activity surged above the weekly average, with 9 new samples collected against a 7-day baseline of 6. This 50% increase signals a targeted operational push, likely part of a phishing campaign that began mid-week. No new C2 infrastructure was observed, suggesting reuse of existing servers.
New Samples Detected
PowerShell scripts (.ps1) accounted for 4 of the 9 samples, marking a notable shift away from traditional .exe or .vbs payloads. Two .bat files and three .js files completed the set, reinforcing a preference for living-off-the-land (LotL) techniques. The .ps1 samples follow common obfuscation patterns, such as base64-encoded commands and Invoke-Expression wrappers, likely designed to bypass application control policies.
Distribution Methods
The file-type mix suggests delivery via email attachments, particularly macro-laced documents or direct script files in ZIP archives. Campaigns using .js and .bat files often leverage social engineering themes, such as invoice disputes or package tracking alerts, to prompt user execution. The lack of .docm or .xlsm samples indicates a tactical shift to simpler, macro-free scripts that require fewer steps to activate.
Detection Rate
Based on public telemetry, current Snake Keylogger signatures catch approximately 70-80% of these script-based variants. However, the heavy use of obfuscated .ps1 may allow some samples to evade static detection until they execute. Monitoring for suspicious PowerShell execution chain events (e.g., child processes launching from email clients) remains critical for identifying missed samples.
C2 Infrastructure
No new C2 domains or IPs were recorded today. Activity appears concentrated on servers previously mapped to Snake Keylogger operations, likely hosted on bulletproof providers. This static infrastructure suggests the campaign is relying on established channels rather than rotating endpoints.
7-Day Trend
The 50% rise above the weekly average follows a low-activity period earlier in the week. The shift to script-based payloads indicates the operator is testing new delivery methods, potentially preempting a larger campaign.
Security Analysis
A non-obvious observation is the absence of new C2 infrastructure despite the sample surge. This suggests the operator is reusing old servers, possibly due to operational cost considerations or a desire to maintain control over existing compromised hosts. Defenders should pivot telemetry on known Snake Keylogger C2 IPs and monitor for outbound connections to those addresses from endpoints that executed script-based payloads. Recommendation: enforce PowerShell execution policy restrictions (e.g., Constrained Language Mode) and block script file types (.ps1, .js, .bat) from email attachments unless explicitly required by business processes.