Brandon Rodriguez
@BMRodriguezTrusted contributor
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123 detections
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Detects the creation of .vbs or .vbe files in the Windows Startup folder. This technique is actively used by Gamaredon (leveraging CVE-2025-8088) to drop the GammaDrop payload for persistence.
Identifies instances of mshta.exe being used to execute remote payloads over HTTP/HTTPS. This matches the initial ClickFix access vector used in the Amatera Stealer campaign.
Detects network connections to the Cobalt Strike C2 URI path '/statistics/discover.txt', indicating active communication from a FrostyNeighbor Cobalt Strike beacon. Identifying this beacon is critical for finding fully compromised hosts under active remote control.
Detects the creation of a specific scheduled task (TempLogA) used by ModeloRAT to establish persistence and maintain SYSTEM-level access on compromised hosts. The rule looks for `schtasks.exe` execution with `/create`, `TempLogA`, and `SYSTEM` in the command line.
Detects the creation of scheduled tasks named 'ChromeCheck' or 'EdgeCheck' that execute regsvr32.exe. This behavior is associated with Kimsuky's MemLoad loader, which establishes persistence to deploy the httpTroy backdoor.
Detects file access attempts targeting the erroneous SysWOW64 path for Kaspersky drivers. This is a specific bug and a high-confidence indicator of Amatera Stealer's anti-sandbox and evasion checks. The malware specifically looks for 'klif.sys', 'kldisk.sys', 'klhk.sys', and 'kneps.sys' within the incorrect '\Windows\SysWOW64\drivers' directory.
Detects the installation and execution of DWAgent (dwagsvc.exe) from the C:\ProgramData directory, specifically looking for service installation and startup commands. Threat actors like Kimsuky are known to use legitimate RMM tools like DWAgent to maintain persistent remote access while blending in with normal administrative activities.
Detects the specific command execution wrapper used by the Rust-based HelloDoor malware (part of the Kimsuky PebbleDash cluster). The malware sets the code page to 65001 (UTF-8), suppresses output to nul, and chains the execution of a payload using cmd.exe.
Detects network connections to the URI path '/employment/documents-and-resources', which is used by FrostyNeighbor's PicassoLoader to exfiltrate host fingerprinting data and assess compromised hosts for further payload delivery.
Detects Node.js or Bun processes accessing sensitive developer configuration directories such as .ssh and .npmrc, indicating potential credential harvesting. This rule specifically looks for file access or open events initiated by 'node.exe', 'node', 'bun.exe', or 'bun' processes targeting paths containing '.ssh' or '.npmrc', or files named '.npmrc'.
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