Analysis

  • max time kernel
    105s
  • max time network
    105s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-04-2022 02:11

General

  • Target

    e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.exe

  • Size

    856KB

  • MD5

    c0fab232c11bc39a7c86f3f8e99b1dcf

  • SHA1

    442df6e94256fa1a803850f369bf1bf8f4ccf5ad

  • SHA256

    e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519

  • SHA512

    d074eed8e3405947814c64ac5e8d14752055b0551998cd24b4b8124b84f0934101bf0b2dca5bb6187a5ddf43b22c314ec806d56880adbe60c3d4b86c843f2426

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.princemthembudebtsolutions.co.za
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    07950iwebz

Signatures

  • MassLogger

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

  • MassLogger Main Payload 6 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • 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 6 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\e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.exe
    "C:\Users\Admin\AppData\Local\Temp\e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1856
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yhtTXoGhX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6FE3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2024
    • C:\Users\Admin\AppData\Local\Temp\e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.exe
      "C:\Users\Admin\AppData\Local\Temp\e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.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:2004
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.exe'
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:868
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\e66c077ec839037d96e6e66ac676812d6b83c572899febe3d7604e6482f54519.exe'
        3⤵
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1504

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp6FE3.tmp

    Filesize

    1KB

    MD5

    74e87c7b757ce1d76accd5e7fa562782

    SHA1

    adfb249feb0ef9d60109d47cefe1eb53dec8365e

    SHA256

    e36650eb584d246e05146274c9e6d3b54e15e6f93a35f7ef18bc4053cba57032

    SHA512

    5d5a478072f128443c60684de1a5b61e0a7ff28194ed6422b294dbe29099d7b62476821aa1f35980dc236cd610ca4aeba0c537864d999624ca22c73deee7d720

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

    Filesize

    7KB

    MD5

    9b815ef92f803ad3009d78099cdb767c

    SHA1

    de525e0850a973494b2c82bbf1492e3866c7bdb2

    SHA256

    180d42dee35838acb2f7932a976cf13475ed1e83ba648ee029cae05cef93e49f

    SHA512

    6a2550585411bbbd274c374a9d7ea37f2852dde4ee7e5cde2b48a5105dae8541f360c1a585be0a0ec6cf965b907fbb0807fc799323b7dbb20452deb6dac38dae

  • memory/868-73-0x0000000000000000-mapping.dmp

  • memory/868-78-0x000000006EF00000-0x000000006F4AB000-memory.dmp

    Filesize

    5.7MB

  • memory/1504-82-0x000000006EF70000-0x000000006F51B000-memory.dmp

    Filesize

    5.7MB

  • memory/1504-79-0x0000000000000000-mapping.dmp

  • memory/1856-55-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

    Filesize

    8KB

  • memory/1856-56-0x0000000000410000-0x0000000000420000-memory.dmp

    Filesize

    64KB

  • memory/1856-57-0x0000000005440000-0x00000000054FC000-memory.dmp

    Filesize

    752KB

  • memory/1856-58-0x0000000005620000-0x00000000056A8000-memory.dmp

    Filesize

    544KB

  • memory/1856-54-0x0000000001010000-0x00000000010EC000-memory.dmp

    Filesize

    880KB

  • memory/2004-65-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-67-0x000000000048188E-mapping.dmp

  • memory/2004-69-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-71-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-66-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-75-0x0000000000B05000-0x0000000000B16000-memory.dmp

    Filesize

    68KB

  • memory/2004-76-0x0000000000FC0000-0x0000000000FFE000-memory.dmp

    Filesize

    248KB

  • memory/2004-77-0x0000000005E60000-0x0000000005EF0000-memory.dmp

    Filesize

    576KB

  • memory/2004-64-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-62-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2004-61-0x0000000000400000-0x0000000000486000-memory.dmp

    Filesize

    536KB

  • memory/2024-59-0x0000000000000000-mapping.dmp