General

  • Target

    a4c3950a8b5fd9da3ad8daec90dec0e9a606cec100a58bfe4538cb28b0f4d872.exe

  • Size

    2.7MB

  • Sample

    240511-b6aflagh78

  • MD5

    efcccf8b63bd72b3209404be33f078b1

  • SHA1

    efcb5f894df34358f405c25d26f1b47310240036

  • SHA256

    a4c3950a8b5fd9da3ad8daec90dec0e9a606cec100a58bfe4538cb28b0f4d872

  • SHA512

    e7cef4e216a56ceb103834a9b434a2641a30052f08512c9372240d314bf772de792bdc910d8e82e1305c4da3733569203f45d09209a0bd53e804e3f838e78d0f

  • SSDEEP

    49152:92Iy94piBjSAsZqLv2PomrfMzd8goYD5P7Wdk6kL1PjKS6vNJF:+90iBjSBELv2AqfMugoYlidk6q1rKV

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sturmsgroup.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    y[/wk46uE}y(|Xn[

Targets

    • Target

      a4c3950a8b5fd9da3ad8daec90dec0e9a606cec100a58bfe4538cb28b0f4d872.exe

    • Size

      2.7MB

    • MD5

      efcccf8b63bd72b3209404be33f078b1

    • SHA1

      efcb5f894df34358f405c25d26f1b47310240036

    • SHA256

      a4c3950a8b5fd9da3ad8daec90dec0e9a606cec100a58bfe4538cb28b0f4d872

    • SHA512

      e7cef4e216a56ceb103834a9b434a2641a30052f08512c9372240d314bf772de792bdc910d8e82e1305c4da3733569203f45d09209a0bd53e804e3f838e78d0f

    • SSDEEP

      49152:92Iy94piBjSAsZqLv2PomrfMzd8goYD5P7Wdk6kL1PjKS6vNJF:+90iBjSBELv2AqfMugoYlidk6q1rKV

    • AgentTesla

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

    • Detect ZGRat V1

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Detect packed .NET executables. Mostly AgentTeslaV4.

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

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables packed with SmartAssembly

    • 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

    • 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.

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks