Analysis

  • max time kernel
    4294180s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    28-03-2022 20:50

General

  • Target

    5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.exe

  • Size

    1.0MB

  • MD5

    8120df9b2ed51328ce8df5a6ab4d498a

  • SHA1

    1b312069c24d2ceb384b8bed9c4a58fb932c89b2

  • SHA256

    5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc

  • SHA512

    44bcd103fed8c7e0b55a0c82563a974845b828c2ec23f629298b466c012dcd05b6c03cab0adf884eadb4241997b805a490836daff86097230d755c32bcbabd61

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.paminakids.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nRBy874S437

Signatures

  • MassLogger

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

  • MassLogger Main Payload 2 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 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.exe
    "C:\Users\Admin\AppData\Local\Temp\5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      PID:580
    • C:\Users\Admin\AppData\Local\Temp\5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.exe
      "C:\Users\Admin\AppData\Local\Temp\5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.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:1944
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1564
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\5f8a84bc4ecfc9e800e1d5e1c2bfa79acfa9548983769b70289d9b19943cb4bc.exe'
        3⤵
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1688

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    37ec93163e86fd60024c3b7752d00cfc

    SHA1

    2322a736ac0b7efcc015a82f5e9553f8bdfc6f53

    SHA256

    d60baa63637c7c849c37164f2bc863952c0f9dd5cd33a07e9ff511d9d1f043e1

    SHA512

    939b341f6cff442e70a363e5e40a375d6da7b3b92694c10883b5f453c7232196e2143c5d7d15d4e84c7b7e3b66d9b9307346a0741c1deb5715f1b2b8392c5af2

  • memory/580-58-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/1564-82-0x0000000002590000-0x00000000031DA000-memory.dmp

    Filesize

    12.3MB

  • memory/1564-81-0x000000006F580000-0x000000006FB2B000-memory.dmp

    Filesize

    5.7MB

  • memory/1688-87-0x00000000023B2000-0x00000000023B4000-memory.dmp

    Filesize

    8KB

  • memory/1688-86-0x0000000074710000-0x0000000074CBB000-memory.dmp

    Filesize

    5.7MB

  • memory/1752-56-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

    Filesize

    8KB

  • memory/1752-55-0x00000000002C0000-0x00000000002D5000-memory.dmp

    Filesize

    84KB

  • memory/1944-72-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-78-0x0000000006210000-0x000000000624E000-memory.dmp

    Filesize

    248KB

  • memory/1944-71-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-74-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-73-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-75-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-68-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-70-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-79-0x0000000006270000-0x0000000006300000-memory.dmp

    Filesize

    576KB

  • memory/1944-80-0x0000000004CE5000-0x0000000004CF6000-memory.dmp

    Filesize

    68KB

  • memory/1944-69-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-66-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-67-0x0000000002152000-0x0000000002153000-memory.dmp

    Filesize

    4KB

  • memory/1944-63-0x0000000000520000-0x00000000005A6000-memory.dmp

    Filesize

    536KB

  • memory/1944-64-0x0000000000520000-0x00000000005A6000-memory.dmp

    Filesize

    536KB