Analysis

  • max time kernel
    46s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15/04/2022, 15:45

General

  • Target
    61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe
  • Size 1.6MB
  • Sample220415-s7krdsgdbm
  • SHA256 61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9
  • MD5 SHA1 SHA512

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\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe
    "C:\Users\Admin\AppData\Local\Temp\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe
      "C:\Users\Admin\AppData\Local\Temp\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe"
      2⤵
        PID:2864
      • C:\Users\Admin\AppData\Local\Temp\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe
        "C:\Users\Admin\AppData\Local\Temp\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.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:1332

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\61276f3fdaf236e7d246648058ab2f3039a12eddb5b243d5e926b358f19caca9.exe.log
          • Size 1KB
          • SHA256 48178f884b8a4dd96e330b210b0530667d9473a7629fc6b4ad12b614bf438ee8
          • MD5 SHA1 SHA512

          memory/1204-130-0x0000000000900000-0x0000000000A98000-memory.dmp

          memory/1204-131-0x0000000005A60000-0x0000000006004000-memory.dmp

          memory/1204-132-0x00000000054B0000-0x0000000005542000-memory.dmp

          memory/1204-133-0x0000000005460000-0x000000000546A000-memory.dmp

          memory/1332-136-0x0000000000400000-0x0000000000486000-memory.dmp

          memory/1332-138-0x0000000006860000-0x00000000068C6000-memory.dmp

          memory/1332-139-0x00000000015B3000-0x00000000015B5000-memory.dmp

          memory/1332-140-0x00000000070C0000-0x0000000007110000-memory.dmp

          memory/1332-141-0x0000000007340000-0x00000000073DC000-memory.dmp