Analysis

  • max time kernel
    4294179s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    26-03-2022 16:24

General

  • Target

    f9548d4c7723aa9facd483bfd30b520961db98087ac08fd7ddb7550410b5d691.exe

  • Size

    578KB

  • MD5

    db4be1a01dfea46c07083a9162281c61

  • SHA1

    f4d2a061df53b905850e1aecb2c007d200e38751

  • SHA256

    f9548d4c7723aa9facd483bfd30b520961db98087ac08fd7ddb7550410b5d691

  • SHA512

    fb92b2ce23378497d0b2b820e1029248bf8a669fcf02ed5e1d14e98ff14991a57ab3ddf41cbe40d4fc3fc083429f73a644ea7231f5b079e2e6831c10aad604cb

Malware Config

Signatures

  • MassLogger

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

  • MassLogger Main Payload 6 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 35 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f9548d4c7723aa9facd483bfd30b520961db98087ac08fd7ddb7550410b5d691.exe
    "C:\Users\Admin\AppData\Local\Temp\f9548d4c7723aa9facd483bfd30b520961db98087ac08fd7ddb7550410b5d691.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1888
    • C:\Users\Admin\AppData\Local\Temp\f9548d4c7723aa9facd483bfd30b520961db98087ac08fd7ddb7550410b5d691.exe
      "C:\Users\Admin\AppData\Local\Temp\f9548d4c7723aa9facd483bfd30b520961db98087ac08fd7ddb7550410b5d691.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:668

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/668-57-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-58-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-60-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-65-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-67-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/668-68-0x0000000004FF5000-0x0000000005006000-memory.dmp

    Filesize

    68KB

  • memory/1888-54-0x0000000000B10000-0x0000000000BA6000-memory.dmp

    Filesize

    600KB

  • memory/1888-55-0x00000000022B0000-0x0000000002354000-memory.dmp

    Filesize

    656KB

  • memory/1888-56-0x00000000009E0000-0x00000000009FC000-memory.dmp

    Filesize

    112KB