Analysis

  • max time kernel
    44s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-04-2022 02:24

General

  • Target

    cf4fa8dc53027d035f01c2484d8734b8a98bb323b71c1d5f1fe3f94416cabe9e.exe

  • Size

    3.3MB

  • MD5

    83ceb8cd46608b79ffaf2798cdad8027

  • SHA1

    e873ec72d9fcf7cb582e5ccbf6b6a5b640f42e84

  • SHA256

    cf4fa8dc53027d035f01c2484d8734b8a98bb323b71c1d5f1fe3f94416cabe9e

  • SHA512

    3e94cfced5299e5765c305ef6ffa3a5fb42d5c0979a6a39bb5dfd072974e11e482fcd31463544d37a450f2695a32cd1b5502756bc0f31dcb0e63544b227d23b2

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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Delays execution with timeout.exe 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 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cf4fa8dc53027d035f01c2484d8734b8a98bb323b71c1d5f1fe3f94416cabe9e.exe
    "C:\Users\Admin\AppData\Local\Temp\cf4fa8dc53027d035f01c2484d8734b8a98bb323b71c1d5f1fe3f94416cabe9e.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1016
    • C:\Windows\SysWOW64\timeout.exe
      timeout 4
      2⤵
      • Delays execution with timeout.exe
      PID:1292
    • C:\Users\Admin\AppData\Local\Temp\cf4fa8dc53027d035f01c2484d8734b8a98bb323b71c1d5f1fe3f94416cabe9e.exe
      "C:\Users\Admin\AppData\Local\Temp\cf4fa8dc53027d035f01c2484d8734b8a98bb323b71c1d5f1fe3f94416cabe9e.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:1804
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1016 -s 636
      2⤵
      • Program crash
      PID:1456

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1016-54-0x0000000000BE0000-0x0000000000F3A000-memory.dmp

    Filesize

    3.4MB

  • memory/1016-56-0x0000000002340000-0x000000000240A000-memory.dmp

    Filesize

    808KB

  • memory/1292-55-0x0000000000000000-mapping.dmp

  • memory/1456-68-0x0000000000000000-mapping.dmp

  • memory/1804-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-60-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-58-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-63-0x000000000048187E-mapping.dmp

  • memory/1804-65-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-67-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-57-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1804-69-0x0000000004FB5000-0x0000000004FC6000-memory.dmp

    Filesize

    68KB