General

  • Target

    Dll-protected.exe

  • Size

    6.0MB

  • Sample

    250214-zf52ksyjar

  • MD5

    afea16e410aba3018cf34994fc4a927d

  • SHA1

    a5034285db7995d9c3354d42dfbe704f1f0c74b3

  • SHA256

    7f9c40d5033299845849d6e250d3c5fca50c15470932ea4388e6238e9f6dba90

  • SHA512

    de658afe66f7b5f1766d0dbc64d3929b6e17012e3298f927748606f3a3d3d2217459182ae8e337569ce194374c2cbcf120eeed682a23fee6901cb087776b9846

  • SSDEEP

    196608:pwZ+KcF6Nw9nPN7xIEDZe9j9du6v++7fN7AszbMq+:BYyf9EjxRr6AIJ

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      Dll-protected.exe

    • Size

      6.0MB

    • MD5

      afea16e410aba3018cf34994fc4a927d

    • SHA1

      a5034285db7995d9c3354d42dfbe704f1f0c74b3

    • SHA256

      7f9c40d5033299845849d6e250d3c5fca50c15470932ea4388e6238e9f6dba90

    • SHA512

      de658afe66f7b5f1766d0dbc64d3929b6e17012e3298f927748606f3a3d3d2217459182ae8e337569ce194374c2cbcf120eeed682a23fee6901cb087776b9846

    • SSDEEP

      196608:pwZ+KcF6Nw9nPN7xIEDZe9j9du6v++7fN7AszbMq+:BYyf9EjxRr6AIJ

    • AsyncRat

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

    • Asyncrat family

    • StormKitty

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

    • StormKitty payload

    • Stormkitty family

    • Async RAT payload

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Downloads MZ/PE file

    • 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

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • 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.

    • 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