General

  • Target

    320c9b7f61e1a20f89d2b4514d1545f0_JaffaCakes118

  • Size

    485KB

  • Sample

    240511-bx71hadf81

  • MD5

    320c9b7f61e1a20f89d2b4514d1545f0

  • SHA1

    36d91c66517c404317ddf5b596c4e5f841005c9c

  • SHA256

    735cbb15792d8be93c653fd2febafc249e57b29faa25aaafb99b42b310bca104

  • SHA512

    65d6d236b510f9cf0273b822c3cdad76afcdc5cb0f4c6dc9a2502eb5ea68238810dbe4c8ec332e36270984d77a1c1a7fe2c444c361f725f8a32ce040f990c276

  • SSDEEP

    12288:3dol1WDRTnx09/amkvj9LEuoJTtBhDSA3Lu7Yp8B4mi:Nmkd6/aTu5tfWAbuo8H

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

myconect.ddns.net:6606

Mutex

VNM_MUTEX_8vaggmzqQMqTBMXSZ7

Attributes
  • encryption_key

    qRvtw4YHx2BDHavO4SeK

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      320c9b7f61e1a20f89d2b4514d1545f0_JaffaCakes118

    • Size

      485KB

    • MD5

      320c9b7f61e1a20f89d2b4514d1545f0

    • SHA1

      36d91c66517c404317ddf5b596c4e5f841005c9c

    • SHA256

      735cbb15792d8be93c653fd2febafc249e57b29faa25aaafb99b42b310bca104

    • SHA512

      65d6d236b510f9cf0273b822c3cdad76afcdc5cb0f4c6dc9a2502eb5ea68238810dbe4c8ec332e36270984d77a1c1a7fe2c444c361f725f8a32ce040f990c276

    • SSDEEP

      12288:3dol1WDRTnx09/amkvj9LEuoJTtBhDSA3Lu7Yp8B4mi:Nmkd6/aTu5tfWAbuo8H

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v15

Tasks