General

  • Target
    5a24cf78cb6054ef0f93726c02aeb7c0d0b2e772b69fb1a9907b6ba8ef8f952e.exe
  • Size 1.1MB
  • Sample240519-brl6vaba96
  • SHA256 5a24cf78cb6054ef0f93726c02aeb7c0d0b2e772b69fb1a9907b6ba8ef8f952e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot7062542161:AAGTRYaovexgStrKeV0wI1K5scR6qGG6-3k/

Targets

    • Target
      5a24cf78cb6054ef0f93726c02aeb7c0d0b2e772b69fb1a9907b6ba8ef8f952e.exe
    • Size 1.1MB
    • SHA256 5a24cf78cb6054ef0f93726c02aeb7c0d0b2e772b69fb1a9907b6ba8ef8f952e
    • MD5 SHA1 SHA512 SSDEEP
    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • UAC bypass

    • Windows security bypass

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables packed with or use KoiVM

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

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

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks