General

  • Target
    OP-5.zip
  • Size 5.1MB
  • Sample261026-rlxcmaxsg1
  • SHA256 244fd5ecb1fe8ec99bc9006015ad9b42193f9dc6b6dc953fa4e723ca86d7f966
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • valleyrat_s2

C2
  • 156.234.7.14:8001

Targets

    • Target
      OP-5.zip
    • Size 5.1MB
    • SHA256 244fd5ecb1fe8ec99bc9006015ad9b42193f9dc6b6dc953fa4e723ca86d7f966
    • 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

    • Enumerates connected drives

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

    • Target
      OP-5/NO-5.exe
    • Size 671KB
    • SHA256 85314a24741a27bb969008b91f6f47e08f1a7a761eb9c772da8a608947dbe092
    • 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.

    • Adds Run key to start application

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Enumerates connected drives

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

    • Target
      OP-5/d3d9core.ax
    • Size 3KB
    • SHA256 de00dc70c1f4760b3ff1d6b1d188cc9aab77a31a1c576ca8fe14fffd6a9934bf
    • MD5 SHA1 SHA512 TLSH
    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Enumerates connected drives

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

    • Target
      OP-5/libcef.dll
    • Size 11.6MB
    • SHA256 f8515b0e2a68b677a105ed438062223ac91e61c7796bd6cd83089e1b0591016b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10

MITRE ATT&CK Enterprise v16

Tasks