General

  • Target

    c31ef3e47ebbb92febeeda72abfdbe9b8bb92cca58eda4e607ef2b192d6df1d6

  • Size

    2.2MB

  • Sample

    241123-b7b1tavlc1

  • MD5

    0c3fb6f18fef7082a5e471492a4ec464

  • SHA1

    02e89c382c50a7745aa8fa8f489fe6a66f9d4d64

  • SHA256

    c31ef3e47ebbb92febeeda72abfdbe9b8bb92cca58eda4e607ef2b192d6df1d6

  • SHA512

    57d4dd97a88abe4fe9e1505a21e58bc693d9c1266447d8bca0d13d92b6576fe390b7fe1cd21dc09108fd7d30a0b3903bdfe1fef5ca876f047abeb7d58677a243

  • SSDEEP

    49152:itYXs8Xh9t4uNRsezTQrm22obPhGcBV2aabQbziSFxc0sIIHpBXPe7+:itY88x9t4upQC2J8cBVjuOOpFL

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7390139954:AAFw-89dzufZnN9iQ-qMJ7xuGsXRrzvXAEI/

Targets

    • Target

      c31ef3e47ebbb92febeeda72abfdbe9b8bb92cca58eda4e607ef2b192d6df1d6

    • Size

      2.2MB

    • MD5

      0c3fb6f18fef7082a5e471492a4ec464

    • SHA1

      02e89c382c50a7745aa8fa8f489fe6a66f9d4d64

    • SHA256

      c31ef3e47ebbb92febeeda72abfdbe9b8bb92cca58eda4e607ef2b192d6df1d6

    • SHA512

      57d4dd97a88abe4fe9e1505a21e58bc693d9c1266447d8bca0d13d92b6576fe390b7fe1cd21dc09108fd7d30a0b3903bdfe1fef5ca876f047abeb7d58677a243

    • SSDEEP

      49152:itYXs8Xh9t4uNRsezTQrm22obPhGcBV2aabQbziSFxc0sIIHpBXPe7+:itY88x9t4upQC2J8cBVjuOOpFL

    • AgentTesla

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

    • Agenttesla family

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Command and Scripting Interpreter: PowerShell

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

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • 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 NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks