General

  • Target

    315e192aab8ea5665e7bc56e140936f1f1063e0778ab2218e4fdadccee33269a.exe

  • Size

    687KB

  • Sample

    240517-bmhmvsae6t

  • MD5

    90e4920b22ed4d08ffa35e9a2207582f

  • SHA1

    a1f7c6ae77f9cd1eedba9b4055702de8fc94fc38

  • SHA256

    315e192aab8ea5665e7bc56e140936f1f1063e0778ab2218e4fdadccee33269a

  • SHA512

    aa12501816e8b1dd38a2b91f2b3216361fabf812271992d8296d28c9d78f3e318de523b1b67da62bed52b9679a3442937bf869e48ccbb894eea2adf803029284

  • SSDEEP

    12288:gxAbWEbNZYTJIiheGv98WEFYIqQAiiq/+XdjRvbuQ/AeAZcf4pxXGntQ/rlHQtYu:gxAxbNZIaZ2fEFPUTq/kdljugAdSQpd3

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    marcellinus360

Targets

    • Target

      315e192aab8ea5665e7bc56e140936f1f1063e0778ab2218e4fdadccee33269a.exe

    • Size

      687KB

    • MD5

      90e4920b22ed4d08ffa35e9a2207582f

    • SHA1

      a1f7c6ae77f9cd1eedba9b4055702de8fc94fc38

    • SHA256

      315e192aab8ea5665e7bc56e140936f1f1063e0778ab2218e4fdadccee33269a

    • SHA512

      aa12501816e8b1dd38a2b91f2b3216361fabf812271992d8296d28c9d78f3e318de523b1b67da62bed52b9679a3442937bf869e48ccbb894eea2adf803029284

    • SSDEEP

      12288:gxAbWEbNZYTJIiheGv98WEFYIqQAiiq/+XdjRvbuQ/AeAZcf4pxXGntQ/rlHQtYu:gxAxbNZIaZ2fEFPUTq/kdljugAdSQpd3

    • 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.

    • 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