Analysis

  • max time kernel
    135s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    30/03/2022, 12:07

General

  • Target
    1ad30f95d54be710a50be31142e47e1a.exe
  • Size 1.1MB
  • Sample220330-pacgzagbdj
  • SHA256 c4892c08f2dc00c82b9699c2ba77083926672eee12ed1d4dc22de4512407f8fa
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot5046858692:AAGBzdOeRJEhVNDpK7m7z7d07qQ2Epskalo/sendDocument

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1ad30f95d54be710a50be31142e47e1a.exe
    "C:\Users\Admin\AppData\Local\Temp\1ad30f95d54be710a50be31142e47e1a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3188
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\1ad30f95d54be710a50be31142e47e1a.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4680
    • C:\Users\Admin\AppData\Local\Temp\1ad30f95d54be710a50be31142e47e1a.exe
      "C:\Users\Admin\AppData\Local\Temp\1ad30f95d54be710a50be31142e47e1a.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4756

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3188-134-0x0000000000880000-0x00000000009A0000-memory.dmp

        memory/3188-135-0x0000000005860000-0x0000000005E04000-memory.dmp

        memory/3188-136-0x0000000005350000-0x00000000053E2000-memory.dmp

        memory/3188-137-0x00000000053F0000-0x00000000053FA000-memory.dmp

        memory/3188-138-0x00000000077F0000-0x000000000788C000-memory.dmp

        memory/4680-144-0x0000000005210000-0x0000000005232000-memory.dmp

        memory/4680-148-0x0000000002875000-0x0000000002877000-memory.dmp

        memory/4680-159-0x0000000007710000-0x0000000007718000-memory.dmp

        memory/4680-142-0x00000000027B0000-0x00000000027E6000-memory.dmp

        memory/4680-143-0x0000000005260000-0x0000000005888000-memory.dmp

        memory/4680-157-0x0000000007620000-0x000000000762E000-memory.dmp

        memory/4680-145-0x0000000005A00000-0x0000000005A66000-memory.dmp

        memory/4680-146-0x0000000005A70000-0x0000000005AD6000-memory.dmp

        memory/4680-147-0x0000000004E80000-0x0000000004E9E000-memory.dmp

        memory/4680-149-0x00000000066A0000-0x00000000066D2000-memory.dmp

        memory/4680-150-0x0000000070250000-0x000000007029C000-memory.dmp

        memory/4680-151-0x0000000006680000-0x000000000669E000-memory.dmp

        memory/4680-158-0x0000000007730000-0x000000000774A000-memory.dmp

        memory/4680-153-0x0000000007A30000-0x00000000080AA000-memory.dmp

        memory/4680-154-0x00000000073F0000-0x000000000740A000-memory.dmp

        memory/4680-155-0x0000000007460000-0x000000000746A000-memory.dmp

        memory/4680-156-0x0000000007670000-0x0000000007706000-memory.dmp

        memory/4756-152-0x0000000006720000-0x0000000006770000-memory.dmp

        memory/4756-141-0x0000000000400000-0x000000000043A000-memory.dmp