General

  • Target

    33C2ADEBFE2C3ACEDFB34FFFF8151B7D.exe

  • Size

    72.2MB

  • Sample

    241209-v9ez2avrcz

  • MD5

    33c2adebfe2c3acedfb34ffff8151b7d

  • SHA1

    8e93f7ecafa92017a7d528423574ab5cfeec754a

  • SHA256

    773e13fffd0842e717ce55e2a678da37123c55186f9c92460c671261b1654ffd

  • SHA512

    6f545b4da55412ec78de6d1c3bddbcc6bb857b7d13b15fe4bb832259dbe1842d44a02b46395233c23ca57abd34239226a60c9f7ee26fcf82ba383a836f8d61ad

  • SSDEEP

    1572864:yIWs/6+mI5n17YTIytz8ATFiQiFGaaoE13gIFxXtzM/zMfCOA6Z:ssJmIBiTvR8UFiQYGvoq35FVEeCOr

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

167.71.56.116:22269

Mutex

3470ac31-30aa-4cf6-ab0a-1ed0dd64656f

Attributes
  • encryption_key

    33E08519CDBEF59C54E93052681A76D1969C659E

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      33C2ADEBFE2C3ACEDFB34FFFF8151B7D.exe

    • Size

      72.2MB

    • MD5

      33c2adebfe2c3acedfb34ffff8151b7d

    • SHA1

      8e93f7ecafa92017a7d528423574ab5cfeec754a

    • SHA256

      773e13fffd0842e717ce55e2a678da37123c55186f9c92460c671261b1654ffd

    • SHA512

      6f545b4da55412ec78de6d1c3bddbcc6bb857b7d13b15fe4bb832259dbe1842d44a02b46395233c23ca57abd34239226a60c9f7ee26fcf82ba383a836f8d61ad

    • SSDEEP

      1572864:yIWs/6+mI5n17YTIytz8ATFiQiFGaaoE13gIFxXtzM/zMfCOA6Z:ssJmIBiTvR8UFiQYGvoq35FVEeCOr

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

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

    • Drops desktop.ini file(s)

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks