General

  • Target

    https://anonfiles.com/c3c1C4G9y0/Venom_RAT_5.6_tombstone3_3883_rar

  • Sample

    230207-tgblgaff91

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

127.0.0.1:4449

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    true

  • install_file

    poop_cheez.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

arrowrat

Botnet

VenomHVNC

C2

10.100.102.1:4448

10.127.0.104:4448

127.0.0.1:4449

Mutex

DBpzhChHX.exe

Targets

    • Target

      https://anonfiles.com/c3c1C4G9y0/Venom_RAT_5.6_tombstone3_3883_rar

    • ArrowRat

      Remote access tool with various capabilities first seen in late 2021.

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

    • Modifies WinLogon for persistence

    • Async RAT payload

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Modifies Windows Firewall

    • Sets file execution options in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • 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.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks