General

  • Target

    7ae4f788f2df6be0152e4fd650fc0fa1e8e9fe0a22313d5079e31f4bf197333b

  • Size

    8.0MB

  • Sample

    240908-b1jgbaxckl

  • MD5

    be1b1120e34c4d331bfa43f3cbb527d9

  • SHA1

    f268425da36c1334ca3cf5c835d64a479465b431

  • SHA256

    7ae4f788f2df6be0152e4fd650fc0fa1e8e9fe0a22313d5079e31f4bf197333b

  • SHA512

    51b467fd2a6243a8bc1e218a39dfa13364240921220995f5458df51617c1e2d24ba657a5b68cfcf1824fe42db57e51215a3a0377425efdc172b844c3506f8b28

  • SSDEEP

    196608:Rpn2uYzIJ0YEleaoUzEDbmPo8wwVKhKsTc6HnSI2yxE/8+n:RpLkIGYnaOWPVK9TcS1KUa

Malware Config

Extracted

Family

xworm

Version

3.1

C2

includes-ear.at.ply.gg:19669

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

  • telegram

    https://api.telegram.org/bot5946256736:AAHO4CrAGp_CXtFIt3jYlFOdvAaqBfQV7Qo/sendMessage?chat_id=5319807265

Extracted

Family

quasar

Version

1.3.0.0

Botnet

update64

C2

site-translations.at.ply.gg:19855

Mutex

QSR_MUTEX_WJxUvmtxNYm7LGjN3t

Attributes
  • encryption_key

    32vt5jMLvcowHkjxpyew

  • install_name

    update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    update

  • subdirectory

    SubDir

Targets

    • Target

      c2eb68974fb982502a2f497826f922563d90dfdf32725b44613aa1f957c8d0fd.exe

    • Size

      8.2MB

    • MD5

      630470e421acd1df856832d7a12b4853

    • SHA1

      72d9de36902b6bb8e7b0150c2371a0af341302c3

    • SHA256

      c2eb68974fb982502a2f497826f922563d90dfdf32725b44613aa1f957c8d0fd

    • SHA512

      6fa9f3887613ded84e53b655f84ca245483649e088e956289f15f9b5c3ad91271c395038ff39ec2dcc23415ab41e8bf8d2514f738b1a470c2e58e92d7763be41

    • SSDEEP

      196608:+sYqGogjHX3kH/6PJzxUJNuuSjlSTm0oon51jfHxMOpa+Sq:1sogjnQ61xQYxSTm0rHiWa+S

    • Detect Xworm Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • Modifies Windows Firewall

    • 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.

    • Drops startup file

    • 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.

    • UPX packed file

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • 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

MITRE ATT&CK Enterprise v15

Tasks