Analysis

  • max time kernel
    128s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    14/10/2021, 03:38

General

  • Target
    Price enquiry for test machine.exe
  • Size 477KB
  • Sample211014-d627qafhb4
  • SHA256 f9db35de0ae4c59df7d3ef7525cc111b55e9304cf8d61714d69378aa201acd7f
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Loads dropped DLL 1 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Price enquiry for test machine.exe
    "C:\Users\Admin\AppData\Local\Temp\Price enquiry for test machine.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:568
    • C:\Users\Admin\AppData\Local\Temp\Price enquiry for test machine.exe
      "C:\Users\Admin\AppData\Local\Temp\Price enquiry for test machine.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1784

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1784-115-0x0000000000400000-0x000000000044B000-memory.dmp

        memory/1784-117-0x0000000000400000-0x000000000044B000-memory.dmp

        memory/1784-118-0x0000000002280000-0x0000000002281000-memory.dmp

        memory/1784-119-0x0000000002281000-0x0000000002282000-memory.dmp

        memory/1784-121-0x0000000002287000-0x0000000002288000-memory.dmp

        memory/1784-120-0x0000000002282000-0x0000000002284000-memory.dmp

        memory/1784-122-0x0000000002288000-0x0000000002289000-memory.dmp

        memory/1784-123-0x000000000228D000-0x000000000228F000-memory.dmp