Analysis

  • max time kernel
    133s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    26-03-2022 08:08

General

  • Target

    b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe

  • Size

    572KB

  • MD5

    f39c5d35c7ccd6ddcaeff985ebd5c5f0

  • SHA1

    5fa180d2c3acd666412c39a08fc0f68f9db31e49

  • SHA256

    b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af

  • SHA512

    9e40c3dd290395fed3344b18c6174b2d41ff3379acbe8a2538bc1a2d36885ef815358edbc52a14114c4265a9bd874b8dd1b9593aee09f099cd2b08d226c8829d

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 42 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • 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\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe
    "C:\Users\Admin\AppData\Local\Temp\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1212
    • C:\Users\Admin\AppData\Local\Temp\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe
      "C:\Users\Admin\AppData\Local\Temp\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe"
      2⤵
        PID:2248
      • C:\Users\Admin\AppData\Local\Temp\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe
        "C:\Users\Admin\AppData\Local\Temp\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe"
        2⤵
        • Checks computer location settings
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:2396

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\b2774668441645e7a075ed2a84d44c1b51df204f507e7e207a67c4e280ce26af.exe.log

      Filesize

      1KB

      MD5

      7ebe314bf617dc3e48b995a6c352740c

      SHA1

      538f643b7b30f9231a3035c448607f767527a870

      SHA256

      48178f884b8a4dd96e330b210b0530667d9473a7629fc6b4ad12b614bf438ee8

      SHA512

      0ba9d8f4244c15285e254d27b4bff7c49344ff845c48bc0bf0d8563072fab4d6f7a6abe6b6742e8375a08e9a3b3e5d5dc4937ab428dbe2dd8e62892fda04507e

    • memory/1212-130-0x00000000001F0000-0x0000000000284000-memory.dmp

      Filesize

      592KB

    • memory/1212-131-0x00000000052F0000-0x0000000005894000-memory.dmp

      Filesize

      5.6MB

    • memory/1212-132-0x0000000004C20000-0x0000000004CB2000-memory.dmp

      Filesize

      584KB

    • memory/1212-133-0x0000000004CD0000-0x0000000004CDA000-memory.dmp

      Filesize

      40KB

    • memory/2396-136-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/2396-138-0x00000000064E0000-0x0000000006546000-memory.dmp

      Filesize

      408KB

    • memory/2396-139-0x0000000006D10000-0x0000000006D60000-memory.dmp

      Filesize

      320KB

    • memory/2396-140-0x0000000005393000-0x0000000005395000-memory.dmp

      Filesize

      8KB

    • memory/2396-141-0x0000000006FA0000-0x000000000703C000-memory.dmp

      Filesize

      624KB