General

  • Target

    59d3bc9ca446bf4fcce3a93cdbce134a.exe

  • Size

    322KB

  • Sample

    240805-ta2t3s1bmn

  • MD5

    59d3bc9ca446bf4fcce3a93cdbce134a

  • SHA1

    37120e1b71956b5f3852605db0f33f4565a3952d

  • SHA256

    1a45c674c9c80cee378a210c83c2492baae976727c62bbaf262ee06e6b88c1db

  • SHA512

    d23ddc6d55d8bf237e68d946f1a330a14907ea2b891ccea0890f63ee0f47f746b6e1d9d2151da1744b36d14b06b428fe308ffd97ae44732f3491682610950b63

  • SSDEEP

    6144:3RptkRZIFoIkY/7J81GyQUMTa5+suXqWxHNDf1CPyysAosQSPJHdlLTpn:jHoIfjJ80Rl86xHTCPvsASQJHd

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

C2

blue.o7lab.me:7777

server.underground-cheat.xyz:7777

Mutex

RPYntXGt1eJi

Attributes
  • delay

    3

  • install

    true

  • install_file

    WinUpdate.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

redline

Botnet

server.underground-cheat.xyz

C2

server.underground-cheat.xyz:1337

Targets

    • Target

      59d3bc9ca446bf4fcce3a93cdbce134a.exe

    • Size

      322KB

    • MD5

      59d3bc9ca446bf4fcce3a93cdbce134a

    • SHA1

      37120e1b71956b5f3852605db0f33f4565a3952d

    • SHA256

      1a45c674c9c80cee378a210c83c2492baae976727c62bbaf262ee06e6b88c1db

    • SHA512

      d23ddc6d55d8bf237e68d946f1a330a14907ea2b891ccea0890f63ee0f47f746b6e1d9d2151da1744b36d14b06b428fe308ffd97ae44732f3491682610950b63

    • SSDEEP

      6144:3RptkRZIFoIkY/7J81GyQUMTa5+suXqWxHNDf1CPyysAosQSPJHdlLTpn:jHoIfjJ80Rl86xHTCPvsASQJHd

    • AsyncRat

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

    • Modifies security service

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Async RAT payload

    • 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

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Loads dropped DLL

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks