General

  • Target

    http://web.archive.org

  • Sample

    240714-wfbk7atdjb

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    vca.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:4449

Mutex

mznbkwzxieikffhbvd

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain
aes.plain

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

95.216.52.21:7575

Mutex

xdnqiaxygefjfoolgo

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • AsyncRat

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

    • Modifies WinLogon for persistence

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Async RAT payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies RDP port number used by Windows

    • Sets service image path in registry

    • 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.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Modifies system executable filetype association

    • 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.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Checks system information in the registry

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks