General

  • Target

    0ff72dee2aeaf5b9997f894062e4ed030640ae70b1c23553ed8b6cdb6b0aff7f

  • Size

    145KB

  • Sample

    250421-x4at8swms8

  • MD5

    b900c0e763faad47a53198d13cb4e351

  • SHA1

    681e3eb261e5a677a74aa7900ff83ab42d51ffaa

  • SHA256

    0ff72dee2aeaf5b9997f894062e4ed030640ae70b1c23553ed8b6cdb6b0aff7f

  • SHA512

    1e0987f291febf2414a2e9b628f89887764779e2b02a21c41047cd83efd92100dc89663b7db1f97ba12a0ab0d004bb26a9d8ca486401d775703b7442038730bd

  • SSDEEP

    3072:lUTcx5zHoPMV1jDH1bGmWQte5BV0WUniyimyM7Y:lZHoPMVlVbkie5v0WURye

Malware Config

Extracted

Family

asyncrat

Version

Tsurugi RATs

Botnet

Default

C2

89.117.49.234:4321

Mutex

mlbmlgjnlwu

Attributes
  • delay

    1

  • install

    true

  • install_file

    Microsoft Edges.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

xworm

Version

5.0

C2

89.117.49.234:4322

Mutex

LNX9Jlg2lVc8Hr20

Attributes
  • Install_directory

    %AppData%

  • install_file

    MicrosoftEdges.exe

aes.plain

Targets

    • Target

      0ff72dee2aeaf5b9997f894062e4ed030640ae70b1c23553ed8b6cdb6b0aff7f

    • Size

      145KB

    • MD5

      b900c0e763faad47a53198d13cb4e351

    • SHA1

      681e3eb261e5a677a74aa7900ff83ab42d51ffaa

    • SHA256

      0ff72dee2aeaf5b9997f894062e4ed030640ae70b1c23553ed8b6cdb6b0aff7f

    • SHA512

      1e0987f291febf2414a2e9b628f89887764779e2b02a21c41047cd83efd92100dc89663b7db1f97ba12a0ab0d004bb26a9d8ca486401d775703b7442038730bd

    • SSDEEP

      3072:lUTcx5zHoPMV1jDH1bGmWQte5BV0WUniyimyM7Y:lZHoPMVlVbkie5v0WURye

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Contains code to disable Windows Defender

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

    • Detect Xworm Payload

    • Modifies Windows Defender DisableAntiSpyware settings

    • Modifies Windows Defender Real-time Protection settings

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Async RAT payload

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Command and Scripting Interpreter: PowerShell

      Start PowerShell.

MITRE ATT&CK Enterprise v16

Tasks