Analysis

  • max time kernel
    99s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-04-2022 05:31

General

  • Target

    68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349.exe

  • Size

    1.2MB

  • MD5

    25700d5ea910882c8a64fa06b7a28bf5

  • SHA1

    dc3a116ed2eaed744dd1de412af7dced809a2ef2

  • SHA256

    68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349

  • SHA512

    7147ffac80a425cdbeb26dbc6510873bb7110f69f64e76ff8228b8f345510c4bf127326c4a05e30f5ec873242c39903897aaf04d6c6ceaa6f62dfea9402ba6c8

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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349.exe
    "C:\Users\Admin\AppData\Local\Temp\68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Users\Admin\AppData\Local\Temp\68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349.exe
      "C:\Users\Admin\AppData\Local\Temp\68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349.exe"
      2⤵
      • Checks computer location settings
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1164
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\68eef92865b6139b72970c4fe508c5207714fed44b66c57bb8d3f5671b659349.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1496

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1164-64-0x000000000048185E-mapping.dmp

  • memory/1164-58-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1164-71-0x0000000002435000-0x0000000002446000-memory.dmp

    Filesize

    68KB

  • memory/1164-68-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1164-63-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1164-59-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1164-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1164-66-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1164-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1496-69-0x0000000000000000-mapping.dmp

  • memory/1496-70-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

    Filesize

    8KB

  • memory/1496-72-0x000000006E660000-0x000000006EC0B000-memory.dmp

    Filesize

    5.7MB

  • memory/1496-73-0x00000000022D0000-0x0000000002F1A000-memory.dmp

    Filesize

    12.3MB

  • memory/1900-55-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1900-56-0x0000000000590000-0x0000000000626000-memory.dmp

    Filesize

    600KB

  • memory/1900-57-0x0000000000550000-0x000000000056C000-memory.dmp

    Filesize

    112KB

  • memory/1900-54-0x00000000008A0000-0x00000000009D2000-memory.dmp

    Filesize

    1.2MB