General

  • Target

    services.png.exe

  • Size

    264KB

  • Sample

    250131-l3g2davkgq

  • MD5

    d397a1de162f332782fe3205a07792dd

  • SHA1

    44793b3a374c3cb453bbd87a2fd28d8a4c408002

  • SHA256

    ea251bf7fcc0a42cb9e954a45d925ef379ef1ffca39e482f44af701b4ace8560

  • SHA512

    6be10fc6ebabffadd89a72862c5d292e2939d165298019fe684de4efb3284603756c8764810835c12651ad49f608dd3345c8d778b7fd795683f0fcceeaa3f659

  • SSDEEP

    6144:VtjNiEZdoTD3wad4eq5OxUatA04d0drsFp2A4AG5uU:VTdS3Uek0WchA2D

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot6987227198:AAGW8xEs5eNdfO7EF-8152h-RqJkKbn52BE/sendMessage?chat_id=1075483951

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

gurcu

C2

https://api.telegram.org/bot6987227198:AAGW8xEs5eNdfO7EF-8152h-RqJkKbn52BE/sendMessage?chat_id=1075483951

https://api.telegram.org/bot6987227198:AAGW8xEs5eNdfO7EF-8152h-RqJkKbn52BE/sendDocument?chat_id=107548395

https://api.telegram.org/bot1119746739:AAGMhvpUjXI4CzIfizRC--VXilxnkJlhaf8/sendDocument?chat_id=109642586

Targets

    • Target

      services.png.exe

    • Size

      264KB

    • MD5

      d397a1de162f332782fe3205a07792dd

    • SHA1

      44793b3a374c3cb453bbd87a2fd28d8a4c408002

    • SHA256

      ea251bf7fcc0a42cb9e954a45d925ef379ef1ffca39e482f44af701b4ace8560

    • SHA512

      6be10fc6ebabffadd89a72862c5d292e2939d165298019fe684de4efb3284603756c8764810835c12651ad49f608dd3345c8d778b7fd795683f0fcceeaa3f659

    • SSDEEP

      6144:VtjNiEZdoTD3wad4eq5OxUatA04d0drsFp2A4AG5uU:VTdS3Uek0WchA2D

    • AsyncRat

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

    • Asyncrat family

    • Gurcu family

    • Gurcu, WhiteSnake

      Gurcu aka WhiteSnake is a malware stealer written in C#.

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • Async RAT payload

    • Command and Scripting Interpreter: PowerShell

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

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • Stops running service(s)

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

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

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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.

    • Drops desktop.ini file(s)

    • Looks up external IP address via web service

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

    • Looks up geolocation information via web service

      Uses a legitimate geolocation service to find the infected system's geolocation info.

    • Network Share Discovery

      Attempt to gather information on host network.

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of SetThreadContext

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks