General

  • Target

    Token Generator.bat

  • Size

    3.5MB

  • Sample

    240526-zrbxwacg92

  • MD5

    e984ebea899379a8c0a47f9308c7370b

  • SHA1

    863330006bef4c55a1bc79771ae989dc0412f717

  • SHA256

    9f413ae8218ec74eb61a052e1c2b8b27f8ee7038902db5aaea9c93e0752fa48b

  • SHA512

    70934def86e93b350e72711e757cbe0a97a9a58259f184e2c97aeea3a2b9f016bb03e4fb499f3876248bfb43edec5e3949599448d95235afcb1b46d71362b975

  • SSDEEP

    49152:HgquNH3RLlp72pnTcrwIBX1F2A5LzeuUxZ3u3AnCH4El0oKYlL:HY

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

quasar

Version

1.4.1

Botnet

Token Gen

C2

uk2.localto.net:6103

Mutex

0c14e9f2-6918-4e50-8463-04ad871c1e3d

Attributes
  • encryption_key

    6BE0D74806BB58E6DB21FA6E3B6DB38B4A72BAFC

  • install_name

    $77-powershell.exe

  • log_directory

    $77-Logs

  • reconnect_delay

    3000

  • startup_key

    Discord

  • subdirectory

    $77-Rootkit

Targets

    • Target

      Token Generator.bat

    • Size

      3.5MB

    • MD5

      e984ebea899379a8c0a47f9308c7370b

    • SHA1

      863330006bef4c55a1bc79771ae989dc0412f717

    • SHA256

      9f413ae8218ec74eb61a052e1c2b8b27f8ee7038902db5aaea9c93e0752fa48b

    • SHA512

      70934def86e93b350e72711e757cbe0a97a9a58259f184e2c97aeea3a2b9f016bb03e4fb499f3876248bfb43edec5e3949599448d95235afcb1b46d71362b975

    • SSDEEP

      49152:HgquNH3RLlp72pnTcrwIBX1F2A5LzeuUxZ3u3AnCH4El0oKYlL:HY

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Tasks