Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    02/12/2020, 09:20

General

  • Target

    Payment Advice.exe

  • Size

    21KB

  • MD5

    361662a43b699d9ec3cdfd282ae7d223

  • SHA1

    1ed81bf68e94e16d1e56a78dc71c9fcd993e0973

  • SHA256

    e39ed8bfee05ab6d964885748f4800bf955b47b59002213e34e5b9d331882b98

  • SHA512

    0d1898d0b7204e2154d5d3b6a38d6b1d69e27d7368d6f214cc10e0d711e42293876ed18e5d228e18f4dcaaea6de02dd672a20820513e724fce917960b83a2f42

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.porathacorp.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    susila@22

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 4 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 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
  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Advice.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Advice.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 4.891
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1392
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4.891
        3⤵
        • Delays execution with timeout.exe
        PID:2016
    • C:\Users\Admin\AppData\Local\Temp\Payment Advice.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Advice.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1268
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Payment Advice.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:600
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Payment Advice.exe'
        3⤵
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1636

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/548-2-0x0000000074DC0000-0x00000000754AE000-memory.dmp

    Filesize

    6.9MB

  • memory/548-7-0x000000000B200000-0x000000000B353000-memory.dmp

    Filesize

    1.3MB

  • memory/548-3-0x0000000000F40000-0x0000000000F41000-memory.dmp

    Filesize

    4KB

  • memory/600-31-0x0000000006130000-0x0000000006131000-memory.dmp

    Filesize

    4KB

  • memory/600-16-0x0000000074D40000-0x000000007542E000-memory.dmp

    Filesize

    6.9MB

  • memory/600-20-0x0000000004920000-0x0000000004921000-memory.dmp

    Filesize

    4KB

  • memory/600-21-0x0000000004610000-0x0000000004611000-memory.dmp

    Filesize

    4KB

  • memory/600-22-0x0000000005240000-0x0000000005241000-memory.dmp

    Filesize

    4KB

  • memory/600-25-0x0000000005FE0000-0x0000000005FE1000-memory.dmp

    Filesize

    4KB

  • memory/600-30-0x0000000006040000-0x0000000006041000-memory.dmp

    Filesize

    4KB

  • memory/600-19-0x00000000009D0000-0x00000000009D1000-memory.dmp

    Filesize

    4KB

  • memory/600-38-0x0000000006280000-0x0000000006281000-memory.dmp

    Filesize

    4KB

  • memory/600-39-0x0000000006220000-0x0000000006221000-memory.dmp

    Filesize

    4KB

  • memory/600-53-0x0000000006300000-0x0000000006301000-memory.dmp

    Filesize

    4KB

  • memory/600-54-0x0000000006310000-0x0000000006311000-memory.dmp

    Filesize

    4KB

  • memory/1268-11-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1268-12-0x0000000074D40000-0x000000007542E000-memory.dmp

    Filesize

    6.9MB

  • memory/1268-8-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1268-10-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/1268-17-0x0000000000B30000-0x0000000000B69000-memory.dmp

    Filesize

    228KB

  • memory/1268-18-0x0000000005D40000-0x0000000005DCD000-memory.dmp

    Filesize

    564KB

  • memory/1636-61-0x0000000004910000-0x0000000004911000-memory.dmp

    Filesize

    4KB

  • memory/1636-57-0x00000000748B0000-0x0000000074F9E000-memory.dmp

    Filesize

    6.9MB

  • memory/1636-60-0x0000000002650000-0x0000000002651000-memory.dmp

    Filesize

    4KB

  • memory/1636-59-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

    Filesize

    4KB

  • memory/1636-58-0x0000000002430000-0x0000000002431000-memory.dmp

    Filesize

    4KB

  • memory/1636-71-0x00000000057B0000-0x00000000057B1000-memory.dmp

    Filesize

    4KB

  • memory/1636-72-0x0000000006270000-0x0000000006271000-memory.dmp

    Filesize

    4KB