General

  • Target

    fd0c8a243590998e35abecaceacd24e3_JaffaCakes118

  • Size

    636KB

  • Sample

    241218-zhzbtasjcr

  • MD5

    fd0c8a243590998e35abecaceacd24e3

  • SHA1

    ae787e91709ebe2a88a245d3e918504429f67752

  • SHA256

    2b7e1093dcf9f2faf1b1d117ca10dbf1d482feda6640e27366d4ce3a18097d6b

  • SHA512

    b93b8bf01791a2eba8bbdb1f4e7cbc329ec4ed311bfc8d3a5e5e576130008b141df61f2fbbeb5f814e7a684e98234b77d5aa7882fbde5de4aa89693332f00452

  • SSDEEP

    12288:d6WNqSSRkmZwJ3VVJxz5BsCap4f6Hyddt/HWLywARhgEsi9EN10XNfLD:zdqk3VxdBsCbCHyDt/2+hIkhXNff

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bsia.co.in
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    21mbsia@)@!Y

Targets

    • Target

      SOAJULY202107.exe

    • Size

      1.0MB

    • MD5

      82889f1b8b41a2cc68adcd8538bb4637

    • SHA1

      d7a54b3b599079db1dd72b69141b1aec119a2797

    • SHA256

      d9087e4e807ef2e3c826c69d1a2e3b334e482f2ae12fc94445f595a79f64a674

    • SHA512

      5f4b9cd0f04df8d66c37faa4da8539de61f37a08781497f982bda8a59c8c102c55dafa0a673e3ebf701e9e87b77d1242e7e5e70f445eae56dbfc898bdf4eb00c

    • SSDEEP

      12288:0nNGmyRQ0Zwp3zdJ5z5fsaav4f6Hqd1h/HWLk0I/FE+s2xE:SCy3zhdfsapyHq/h/2Yh+u

    • AgentTesla

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

    • Agenttesla family

    • AgentTesla payload

    • 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.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • 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