General

  • Target

    nick015.docx

  • Size

    16KB

  • Sample

    240715-mfyahsvapb

  • MD5

    916ebc98b5e558d1549670b6daaa69f5

  • SHA1

    143fd3c85c8c4d1582f46e7dd1df66ec55a10662

  • SHA256

    5685ac180e320c50a6c4d70569a15d317f9b03baf71091b84f0915cec512869e

  • SHA512

    9925b9f0b9dd674f0bc781ce20265989a7a94ecde90dc07bb2dfabc985d7069c84a3582a8c3fc9dd0c9585d698531c3253bc652ad88a708b7e3588f256e42ace

  • SSDEEP

    384:3yXkT5jW9Zs8PL8wi4OEwH8TIbE91r2fRJJY+vigkZoCOkp:3ckVYZ5P3DOqnYJHLvVkZoop

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      nick015.docx

    • Size

      16KB

    • MD5

      916ebc98b5e558d1549670b6daaa69f5

    • SHA1

      143fd3c85c8c4d1582f46e7dd1df66ec55a10662

    • SHA256

      5685ac180e320c50a6c4d70569a15d317f9b03baf71091b84f0915cec512869e

    • SHA512

      9925b9f0b9dd674f0bc781ce20265989a7a94ecde90dc07bb2dfabc985d7069c84a3582a8c3fc9dd0c9585d698531c3253bc652ad88a708b7e3588f256e42ace

    • SSDEEP

      384:3yXkT5jW9Zs8PL8wi4OEwH8TIbE91r2fRJJY+vigkZoCOkp:3ckVYZ5P3DOqnYJHLvVkZoop

    • AgentTesla

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

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

    • Downloads MZ/PE file

    • Abuses OpenXML format to download file from external location

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks