General

  • Target
    WildForest.zip
  • Size 3.9MB
  • Sample261014-ctb94at14l
  • SHA256 640d9049b887f846824f51a547612de6553897f5c3e221c39f6a019b8bb6086a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Attributes
  • encryption_key

    E81FFEB3A3DCF76E98295D2AB109A5C458CB3159

  • key_salt

    5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382

  • reconnect_delay

    3000

Targets

    • Target
      WildForest.zip
    • Size 3.9MB
    • SHA256 640d9049b887f846824f51a547612de6553897f5c3e221c39f6a019b8bb6086a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

    • PulsaRAT library module

      Core component of the PulsaRAT remote access trojan, implementing its command protocol for hidden remote desktop, UAC bypass, persistence, and credential theft.

    • Quasar payload

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Deobfuscate/Decode Files or Information

      Payload decoded via CertUtil.

    • Executes a VBScript file via the Windows Script Host.

    • Target
      D3D12/D3D12Core.dll
    • Size 4.5MB
    • SHA256 e680757d16e66756c21fb0603d12a1e47928cf7b2897f9e5c03af3a87b5c8b24
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    • Target
      GameAssembly.dll
    • Size 236KB
    • SHA256 1796e9fadc4d204f1da661b493e502769df5575234e2b70bf232e867dba36545
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    • Target
      WildForest.installer.exe
    • Size 1.0MB
    • SHA256 d190887c4d0d3653a79252bd757fee12c2bcf50c4783ff4658af62f05487983c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

    • PulsaRAT library module

      Core component of the PulsaRAT remote access trojan, implementing its command protocol for hidden remote desktop, UAC bypass, persistence, and credential theft.

    • Quasar payload

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Adds Run key to start application

    • Deobfuscate/Decode Files or Information

      Payload decoded via CertUtil.

    • Executes a VBScript file via the Windows Script Host.

MITRE ATT&CK Enterprise v16

Tasks