General

  • Target
    Malware_Sample_ValleyRAT_IRBM_2026-10-22_pw-infected.zip
  • Size 639KB
  • Sample261023-cjs5vshs2s
  • SHA256 426bfd72b3143c76c83bfb3246f820e3cc17902ea04293a35764b67fc635ec3d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

C2
  • 101.33.117.120:778

Targets

    • Target
      No.22102026-3.img
    • Size 6.4MB
    • SHA256 e09046d3967e4f8a7d44680029d1f19f8e88f668634f7ca4ae6b0e01e21295d2
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      Q2
    • Size 3KB
    • SHA256 0bc6c7b5c8f6d02807bfb74c2508ffcee2f42e9c0f2294f1fcb05a7475f462e9
    • MD5 SHA1 SHA512 TLSH
    Score
    1/10
    • Target
      check.exe
    • Size 253KB
    • SHA256 78fc25ed9a673f26eadf03dd5472dc112155138410cd5c81f8b89ccef5bf0736
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: ValleyRat

      ValleyRat stage2 is a backdoor written in C++.

    • Drops file in Drivers directory

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

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

    • Target
      libcef.dll
    • Size 6.1MB
    • SHA256 5de45b44e13a3dcfdb1485786a46822340dc91010adebfceb0c036ea5a49f72c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      rules.yar
    • Size 1KB
    • SHA256 f02004259767b9ab5c7479e8f59b89bab47d77e6c84a1089dc0c998ed734746f
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10
    • Target
      stage2.bin
    • Size 2KB
    • SHA256 5b76b37c13c729133179ac8cbf0bda473ca692e6ba08337eb4bd42e4d2aecf40
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10

MITRE ATT&CK Enterprise v16

Tasks