General

  • Target

    72e582aa7386568e0d8297cc53c41d7e2d8516895a9baafdac66626e9a9a968f.exe

  • Size

    714KB

  • Sample

    240612-bzsctsxhka

  • MD5

    6ce97622c37a38dc29cda30bd0ff6c96

  • SHA1

    cc3ab66749bba05d8a15bf86e9829326d73a58f0

  • SHA256

    72e582aa7386568e0d8297cc53c41d7e2d8516895a9baafdac66626e9a9a968f

  • SHA512

    486403befaf0aceb344b5ee8d414f4b94087a3e081f0840bf6884ef1d449857dc8ba1f6bd5663cac6ecd0b7432063088c65492fc46267e7a6f6f41e111af4b08

  • SSDEEP

    12288:VaCR5leZlNatryCpkWrOe2+9Qz33Q6Owo/OxuS4SUieppHcW3kIYc9:I+erWjpkpI630/gJ4Aepp8Qkdc9

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      72e582aa7386568e0d8297cc53c41d7e2d8516895a9baafdac66626e9a9a968f.exe

    • Size

      714KB

    • MD5

      6ce97622c37a38dc29cda30bd0ff6c96

    • SHA1

      cc3ab66749bba05d8a15bf86e9829326d73a58f0

    • SHA256

      72e582aa7386568e0d8297cc53c41d7e2d8516895a9baafdac66626e9a9a968f

    • SHA512

      486403befaf0aceb344b5ee8d414f4b94087a3e081f0840bf6884ef1d449857dc8ba1f6bd5663cac6ecd0b7432063088c65492fc46267e7a6f6f41e111af4b08

    • SSDEEP

      12288:VaCR5leZlNatryCpkWrOe2+9Qz33Q6Owo/OxuS4SUieppHcW3kIYc9:I+erWjpkpI630/gJ4Aepp8Qkdc9

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

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

    • 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

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks