Analysis

  • max time kernel
    4294180s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    26-03-2022 07:25

General

  • Target

    98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.exe

  • Size

    830KB

  • MD5

    9d547cdfaa4bdfc8329ce71b1980e36c

  • SHA1

    ffb5585af1c1f5ee36417116b8ed010e1383d906

  • SHA256

    98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511

  • SHA512

    56574e089ab9df6c068812866fac7983bbd0fe1dcd75e1da9e2d4f240393a6eb3b1db43b4a59daf5c82461e97e78df68d6a1ec18ea4449effd38ee33e0f3a40d

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\98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.exe
    "C:\Users\Admin\AppData\Local\Temp\98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2016
    • 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:320
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\3d5b5cf62fb348a1997d8acab32e4735.xml"
        3⤵
        • Creates scheduled task(s)
        PID:472
    • C:\Users\Admin\AppData\Local\Temp\98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.exe
      "C:\Users\Admin\AppData\Local\Temp\98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.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:664
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1244
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\98c78f4a9b3ee333efec27d29c33b073e0e55930d31257eabbfe9bbbf4775511.exe'
        3⤵
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:992

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/664-64-0x0000000006100000-0x0000000006190000-memory.dmp

    Filesize

    576KB

  • memory/664-60-0x0000000000E50000-0x0000000000EDC000-memory.dmp

    Filesize

    560KB

  • memory/664-63-0x00000000050D0000-0x000000000510E000-memory.dmp

    Filesize

    248KB

  • memory/664-65-0x00000000008B9000-0x00000000008CA000-memory.dmp

    Filesize

    68KB

  • memory/992-72-0x0000000002442000-0x0000000002444000-memory.dmp

    Filesize

    8KB

  • memory/992-71-0x000000006EF20000-0x000000006F4CB000-memory.dmp

    Filesize

    5.7MB

  • memory/1244-66-0x000000006EF20000-0x000000006F4CB000-memory.dmp

    Filesize

    5.7MB

  • memory/1244-67-0x0000000002530000-0x000000000317A000-memory.dmp

    Filesize

    12.3MB

  • memory/2016-54-0x0000000075D31000-0x0000000075D33000-memory.dmp

    Filesize

    8KB