Analysis

  • max time kernel
    94s
  • max time network
    169s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    14-04-2022 13:34

General

  • Target

    84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe

  • Size

    1.4MB

  • MD5

    40e301b6314909edcd20bfb643c608b8

  • SHA1

    b1928e8615249a3eed7572f2d2f908e8d1e063a3

  • SHA256

    84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6

  • SHA512

    617a27125b8a8567be2fea312d80a378c43ea62e8e807560daaa8421b42b790643bbfbebda29f45a283cac3c881e8f9cb20f094c95bfcb556414b68053dd6485

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\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe
    "C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:760
    • C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.exe
      "C:\Users\Admin\AppData\Local\Temp\84cd51ef8ad4c12c88e1d6c26be1d0b5883a844b5a8a301c24114dfb7ea607b6.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:2004

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/760-54-0x0000000000A40000-0x0000000000BA0000-memory.dmp

    Filesize

    1.4MB

  • memory/760-55-0x00000000050E0000-0x000000000517C000-memory.dmp

    Filesize

    624KB

  • memory/760-56-0x0000000001FF0000-0x000000000200C000-memory.dmp

    Filesize

    112KB

  • memory/2004-57-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-58-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-60-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-65-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-67-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-68-0x00000000009F0000-0x0000000000A30000-memory.dmp

    Filesize

    256KB