General

  • Target

    94b4b5b599c81c62f2ea6c44530f0058cf7e42c11ab9b6f16fd78bdfe5a5f44c

  • Size

    3.5MB

  • Sample

    241113-v6kq4swena

  • MD5

    36bdeb5656d37e4312f946c6c1e630db

  • SHA1

    586f4524a1f5404dd03009da2d3b2e7eb894bc67

  • SHA256

    94b4b5b599c81c62f2ea6c44530f0058cf7e42c11ab9b6f16fd78bdfe5a5f44c

  • SHA512

    8ae0ff67c163e6ec0bb6b3c2b479d0714db270ca043e49e6dd721ecbd7aff10a80eb729f4b8996a77f90c2db9b938f8942cba3760c590c410321328861e0530c

  • SSDEEP

    98304:ndBGsvKSM7gRcSt4K1xDhRIZ3u+hWEv7Kz+:uSyKcyrb+Rjm+

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

08-10-build

C2

crostech.ru:4782

Mutex

6792b0f6-5ede-4aec-96ea-721d3f317462

Attributes
  • encryption_key

    DD459BB92A43EF8EEB2FE401C8453F685AECE590

  • install_name

    ChromiumDaemon.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Chromium Extentions Service

  • subdirectory

    ChromiumExtentions

Targets

    • Target

      94b4b5b599c81c62f2ea6c44530f0058cf7e42c11ab9b6f16fd78bdfe5a5f44c

    • Size

      3.5MB

    • MD5

      36bdeb5656d37e4312f946c6c1e630db

    • SHA1

      586f4524a1f5404dd03009da2d3b2e7eb894bc67

    • SHA256

      94b4b5b599c81c62f2ea6c44530f0058cf7e42c11ab9b6f16fd78bdfe5a5f44c

    • SHA512

      8ae0ff67c163e6ec0bb6b3c2b479d0714db270ca043e49e6dd721ecbd7aff10a80eb729f4b8996a77f90c2db9b938f8942cba3760c590c410321328861e0530c

    • SSDEEP

      98304:ndBGsvKSM7gRcSt4K1xDhRIZ3u+hWEv7Kz+:uSyKcyrb+Rjm+

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Enumerates processes with tasklist

MITRE ATT&CK Enterprise v15

Tasks