Analysis

  • max time kernel
    61s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    15-04-2022 12:56

General

  • Target

    8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe

  • Size

    7.0MB

  • MD5

    bf006c9b0da0a6a76cc818fd6c4332b2

  • SHA1

    fa71947f41bc5900d793cda9e0edaaa79774750c

  • SHA256

    8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2

  • SHA512

    e0929448f3d4bd6c1bc0c749ea23eb756f6eaf64fe2e014d16a38c8aeb870077e35691d9cb7dd813f5af38d8d72d8cf8ec02e38906135b8235b91af6793ce05b

Malware Config

Extracted

Family

matiex

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MARYolanmauluogwo@ever

Signatures

  • Matiex

    Matiex is a keylogger and infostealer first seen in July 2020.

  • Matiex Main Payload 6 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Windows security bypass 2 TTPs
  • Drops startup file 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 9 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 11 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe
    "C:\Users\Admin\AppData\Local\Temp\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2044
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1464
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:628
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe" -Force
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:768
    • C:\Users\Admin\AppData\Local\Temp\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe
      "C:\Users\Admin\AppData\Local\Temp\8eff817d4a8ab57a51dd2863e8d1323ebac8158f558bceb9da56ebb08da1efc2.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:984
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:772

    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

      84821af4295144c7809cdb31170b78b8

      SHA1

      ef915357fdc06b45280bb27a5e02bac18b09d4bb

      SHA256

      c6450f4f1d2186ef3fd8ea388afce532d5879974415bb9edb7d10072d67fd49a

      SHA512

      7e007c58d9116971ae4c598ffe564f0cb4569c8a3e7657612e1758d3dff397ac591259a4224ae6fc496ec58c21dd27d8b7e479625ddfa490e697c455a5e62a5b

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

      Filesize

      7KB

      MD5

      84821af4295144c7809cdb31170b78b8

      SHA1

      ef915357fdc06b45280bb27a5e02bac18b09d4bb

      SHA256

      c6450f4f1d2186ef3fd8ea388afce532d5879974415bb9edb7d10072d67fd49a

      SHA512

      7e007c58d9116971ae4c598ffe564f0cb4569c8a3e7657612e1758d3dff397ac591259a4224ae6fc496ec58c21dd27d8b7e479625ddfa490e697c455a5e62a5b

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

      Filesize

      7KB

      MD5

      84821af4295144c7809cdb31170b78b8

      SHA1

      ef915357fdc06b45280bb27a5e02bac18b09d4bb

      SHA256

      c6450f4f1d2186ef3fd8ea388afce532d5879974415bb9edb7d10072d67fd49a

      SHA512

      7e007c58d9116971ae4c598ffe564f0cb4569c8a3e7657612e1758d3dff397ac591259a4224ae6fc496ec58c21dd27d8b7e479625ddfa490e697c455a5e62a5b

    • memory/628-71-0x000000006EE60000-0x000000006F40B000-memory.dmp

      Filesize

      5.7MB

    • memory/628-60-0x0000000000000000-mapping.dmp

    • memory/768-62-0x0000000000000000-mapping.dmp

    • memory/768-68-0x000000006EE60000-0x000000006F40B000-memory.dmp

      Filesize

      5.7MB

    • memory/772-84-0x0000000000000000-mapping.dmp

    • memory/872-55-0x0000000075521000-0x0000000075523000-memory.dmp

      Filesize

      8KB

    • memory/872-56-0x0000000004C90000-0x0000000004D4C000-memory.dmp

      Filesize

      752KB

    • memory/872-54-0x0000000000EB0000-0x00000000015B2000-memory.dmp

      Filesize

      7.0MB

    • memory/984-79-0x000000000047087E-mapping.dmp

    • memory/984-81-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/984-86-0x0000000005D25000-0x0000000005D36000-memory.dmp

      Filesize

      68KB

    • memory/984-83-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/984-73-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/984-74-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/984-76-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/984-78-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/984-77-0x0000000000400000-0x0000000000476000-memory.dmp

      Filesize

      472KB

    • memory/1464-58-0x0000000000000000-mapping.dmp

    • memory/1464-72-0x00000000025D0000-0x0000000002613000-memory.dmp

      Filesize

      268KB

    • memory/1464-69-0x000000006EE60000-0x000000006F40B000-memory.dmp

      Filesize

      5.7MB

    • memory/2044-70-0x000000006EE60000-0x000000006F40B000-memory.dmp

      Filesize

      5.7MB

    • memory/2044-57-0x0000000000000000-mapping.dmp