Analysis

  • max time kernel
    4294180s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    26-03-2022 03:19

General

  • Target

    4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.exe

  • Size

    830KB

  • MD5

    39fde22be218f8537ec6cb6a3b4cbc89

  • SHA1

    a8c4cdfc8dbbf6c1be4e6f7fc010f373827944dc

  • SHA256

    4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0

  • SHA512

    ef32c5638a7559a63e21c3af24717da68a2e5178ff7faeb3d63d62b7a10f9673f1d0187a6970fabedd4530c1011f7477321d8f09ed9d8fe7fca779030cfa19ce

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.

  • Deletes itself 1 IoCs
  • 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
  • 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
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.exe
    "C:\Users\Admin\AppData\Local\Temp\4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\3d5b5cf62fb348a1997d8acab32e4735.xml"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:840
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\3d5b5cf62fb348a1997d8acab32e4735.xml"
        3⤵
        • Creates scheduled task(s)
        PID:764
    • C:\Users\Admin\AppData\Local\Temp\4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.exe
      "C:\Users\Admin\AppData\Local\Temp\4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.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:332
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:808
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\4d62bd74553c0786e9ab9a22f035a3dbc034d63472399e7edb8a945b383099a0.exe'
        3⤵
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1468

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/332-64-0x00000000062D0000-0x0000000006360000-memory.dmp

    Filesize

    576KB

  • memory/332-65-0x0000000004A19000-0x0000000004A2A000-memory.dmp

    Filesize

    68KB

  • memory/332-60-0x00000000041D0000-0x000000000425C000-memory.dmp

    Filesize

    560KB

  • memory/332-63-0x0000000004D70000-0x0000000004DAE000-memory.dmp

    Filesize

    248KB

  • memory/808-66-0x000000006F550000-0x000000006FAFB000-memory.dmp

    Filesize

    5.7MB

  • memory/808-67-0x0000000002442000-0x0000000002444000-memory.dmp

    Filesize

    8KB

  • memory/1468-71-0x0000000073CE0000-0x000000007428B000-memory.dmp

    Filesize

    5.7MB

  • memory/1468-72-0x0000000002570000-0x00000000031BA000-memory.dmp

    Filesize

    12.3MB

  • memory/1808-54-0x0000000076AC1000-0x0000000076AC3000-memory.dmp

    Filesize

    8KB