General

  • Target

    munchenlatest.zip

  • Size

    8.8MB

  • Sample

    241028-wqm2zavdpn

  • MD5

    8a426208fc37e756dffd738ecb77b305

  • SHA1

    d06b79e9fb69d443da7d1ffe8dbf2c6992e64c4b

  • SHA256

    7b97c5e022c4225bfc79606d9dcc30c0d8b9bac4a8fcbd60a2236cf1db0305d9

  • SHA512

    6caa2f63c0341fa91f9bc142071b022f46b5b4d084b57419066b02b8fd535478fbb16528dfc4354ef510e027cbe6aa7f3b10738a0c0482db3df1cab404b97d9b

  • SSDEEP

    196608:EQuDY9mHqfFqhwz7koW/qrerJaJyHCrg4Kd0HDFQz2nkVONDsNIy:EZDYwHLyPkV2eV6yyOAeQkVImF

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Guppies

C2

198.98.58.93:999

Mutex

SYSTEMSPOOF

Attributes
  • delay

    1

  • install

    true

  • install_file

    Core Sound Service.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      munchenlatest.zip

    • Size

      8.8MB

    • MD5

      8a426208fc37e756dffd738ecb77b305

    • SHA1

      d06b79e9fb69d443da7d1ffe8dbf2c6992e64c4b

    • SHA256

      7b97c5e022c4225bfc79606d9dcc30c0d8b9bac4a8fcbd60a2236cf1db0305d9

    • SHA512

      6caa2f63c0341fa91f9bc142071b022f46b5b4d084b57419066b02b8fd535478fbb16528dfc4354ef510e027cbe6aa7f3b10738a0c0482db3df1cab404b97d9b

    • SSDEEP

      196608:EQuDY9mHqfFqhwz7koW/qrerJaJyHCrg4Kd0HDFQz2nkVONDsNIy:EZDYwHLyPkV2eV6yyOAeQkVImF

    • AsyncRat

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

    • Asyncrat family

    • Deletes Windows Defender Definitions

      Uses mpcmdrun utility to delete all AV definitions.

    • Async RAT payload

    • Command and Scripting Interpreter: PowerShell

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

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Enumerates processes with tasklist

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks