General

  • Target

    Loader.bat

  • Size

    1KB

  • Sample

    241125-pwf3aaxjct

  • MD5

    84d66a793f6d1f8fb1f4726ee735f55e

  • SHA1

    db7f145a9685a3911f02bbc61a02546da06e68d9

  • SHA256

    504e74f223f13c996066449c7f279eb32a61f80f80c9e87d31cfdca6fee7373f

  • SHA512

    ab172682c693815c9bb902f395632785e0b24981f05eef61244c4311aabb79f94a4af9e1dc978ab2f3caa5b4db1b5cdd2ad896a61d4d8bb747750d702f1b907e

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

technical-southwest.gl.at.ply.gg:58694

Attributes
  • delay

    1

  • install

    true

  • install_file

    WINDOWS.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

umbral

C2

https://discordapp.com/api/webhooks/1310580388070031360/HcT5cAwFckSLk1OKu346uVDw7gzPyJJvcWmU8BKJrBQSUsE3Q1GCqDtVn5MK3JlldJBn

Targets

    • Target

      Loader.bat

    • Size

      1KB

    • MD5

      84d66a793f6d1f8fb1f4726ee735f55e

    • SHA1

      db7f145a9685a3911f02bbc61a02546da06e68d9

    • SHA256

      504e74f223f13c996066449c7f279eb32a61f80f80c9e87d31cfdca6fee7373f

    • SHA512

      ab172682c693815c9bb902f395632785e0b24981f05eef61244c4311aabb79f94a4af9e1dc978ab2f3caa5b4db1b5cdd2ad896a61d4d8bb747750d702f1b907e

    • AsyncRat

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

    • Asyncrat family

    • Detect Umbral payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Umbral family

    • Async RAT payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • 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.

    • 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