General

  • Target
    01082026_1628_01082026_Claude��max����bug-claude.lnk.zip
  • Size 4KB
  • Sample260801-ty25rade75
  • SHA256 896c633b36b8776caa15e1c78d7935bd2d2a8db8d6e6ccecd867a1f0986df7ba
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

Version
  • 1.0

C2
  • 118.107.43.220:8080

  • 118.107.43.220:8888

Attributes
  • campaign_date

    2026. 7.31

Targets

    • Target
      Claudemaxbug/claude.lnk
    • Size 6KB
    • SHA256 101ca72ea83c5a7137c3b2c7dabad0d1bc5760710926844b6f52749f4b191eb3
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Looks for VMWare Tools registry key

    • Looks for VMWare services registry key.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Suspicious use of SetThreadContext

    • Target
      Claudemaxbug/max.lnk
    • Size 6KB
    • SHA256 101ca72ea83c5a7137c3b2c7dabad0d1bc5760710926844b6f52749f4b191eb3
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Looks for VMWare Tools registry key

    • Looks for VMWare services registry key.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks