General

  • Target
    segura.vbs
  • Size 165KB
  • Sample241108-phrxmasdkr
  • SHA256 bd3b1910de0908ebf93905730c594ab28058103110ab459ce3e4920b4d193933
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Source
URLs
  • exe.dropper

    https://drive.google.com/uc?export=download&id=

Extracted

Family
  • asyncrat

Version
  • 1.0.7

Botnet
  • Tar2

C2
  • sremc.duckdns.org:8000

Mutex
  • DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      segura.vbs
    • Size 165KB
    • SHA256 bd3b1910de0908ebf93905730c594ab28058103110ab459ce3e4920b4d193933
    • MD5 SHA1 SHA512 SSDEEP
    • AsyncRat

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

    • Asyncrat family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Checks computer location settings

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

    • Drops startup file

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Legitimate hosting services abused for malware hosting/C2

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks