Daily Summary
Snake Keylogger activity surged above the 7-day average today, with 7 new samples collected compared to the typical 4 per day. This 58% increase marks a notable uptick in operational tempo, though no new C2 infrastructure or geographic targeting was observed.
New Samples Detected
All 7 samples were script-based, split across .js (3), .ps1 (2), and .bat (2) formats. This is a significant shift from the usual mix of executables and documents seen in previous weeks. The dominance of JavaScript loaders suggests an ongoing campaign optimized for email-based delivery, likely using obfuscated JS to fetch and execute next-stage payloads.
Distribution Methods
The .js files were likely delivered via phishing emails containing compressed attachments (e.g., .zip or .rar), which is a common tactic for Snake Keylogger. The PowerShell (.ps1) and batch (.bat) files may indicate alternate infection chains, possibly deployed after initial compromise via macros or scripts. The absence of macro-enabled Office documents suggests threat actors are pivoting away from a historically problematic vector.
Detection Rate
Current antivirus detection for these script-based variants is moderate, with some engines flagging the .js and .ps1 files based on static signatures. However, heavily obfuscated samples may achieve low detection rates initially, as encoding techniques can bypass signature-based scans until behavioral analysis triggers.
C2 Infrastructure
No new C2 servers were identified today, and no previously tracked IPs showed renewed activity. This pause in C2 expansion may indicate operators are reusing existing infrastructure or testing new obfuscation methods before deploying fresh domains.
7-Day Trend
Today’s 58% spike above the 7-day average reflects a sharp rise in script-based samples. This activity may be part of a coordinated campaign, as the volume has doubled compared to the previous week’s daily average of 4.
Security Analysis
The exclusive use of script-based loaders is noteworthy. Snake Keylogger historically relied on .NET executable attachments or embedded macros in Office documents. The switch to .js, .ps1, and .bat files signals a tactical shift toward file types that are often less scrutinized by email filters and endpoint detection rules. Defenders should enforce strict execution policies for scripts via Windows AppLocker or WDAC, especially for JavaScript files arriving from external sources, and enable AMSI scanning for PowerShell and JScript.