Analysis

  • max time kernel
    161s
  • max time network
    165s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    08-05-2022 22:34

General

  • Target

    3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5.exe

  • Size

    1.6MB

  • MD5

    cef80abf8c3f0cde0085f3253ab0381a

  • SHA1

    a7de60994d1c16409700a2deccb6cb1423153967

  • SHA256

    3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

  • SHA512

    80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • suricata: ET MALWARE Common RAT Connectivity Check Observed

    suricata: ET MALWARE Common RAT Connectivity Check Observed

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • 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 NtSetInformationThreadHideFromDebugger 21 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5.exe
    "C:\Users\Admin\AppData\Local\Temp\3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5.exe"
    1⤵
    • Loads dropped DLL
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1912
    • C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Computer_Waifu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:1716
    • C:\Program Files (x86)\SubDir\Client.exe
      "C:\Program Files (x86)\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:824
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks" /create /tn "Computer_Waifu" /sc ONLOGON /tr "C:\Program Files (x86)\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:1548
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\1vO1mbW9rKsa.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:548
        • C:\Windows\SysWOW64\chcp.com
          chcp 65001
          4⤵
            PID:964
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 10 localhost
            4⤵
            • Runs ping.exe
            PID:1612
          • C:\Program Files (x86)\SubDir\Client.exe
            "C:\Program Files (x86)\SubDir\Client.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:524
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 824 -s 1612
          3⤵
          • Loads dropped DLL
          • Program crash
          PID:1608
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1688
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:108
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
          3⤵
            PID:1992
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Users\Admin\AppData\Local\Temp\nNcBKYevuOaj.bat" "
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1944
          • C:\Windows\SysWOW64\chcp.com
            chcp 65001
            3⤵
              PID:1280
            • C:\Windows\SysWOW64\PING.EXE
              ping -n 10 localhost
              3⤵
              • Runs ping.exe
              PID:1884

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • C:\Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • C:\Users\Admin\AppData\Local\Temp\1vO1mbW9rKsa.bat

          Filesize

          199B

          MD5

          715dde0779bda13b7f8143c94223c5e5

          SHA1

          1609959702635b8739dc504e600b39b95453eb11

          SHA256

          5c55ff452c8a483c337525977eeb806cc2d1fa515f23554ef7f1fefba613309e

          SHA512

          2f5bfa5c776dfe05420a1c70609bd12aa2613981fd1daf75d3e585042a4a7a18cabdbcc96f92584f041acd4340153b0901ea5fa427dc2cd26d4a9251a2cd33f4

        • C:\Users\Admin\AppData\Local\Temp\nNcBKYevuOaj.bat

          Filesize

          261B

          MD5

          95068fbd70888caffa4173831c2a49e0

          SHA1

          fa55e29a7df889389d8ad673bb323fc0f6f2e477

          SHA256

          776433c2abb55d7859c84f605e4cb7c0482dcc204884f6e5a2b274fdc3d8a695

          SHA512

          4eef42a0a2de08a650b5d755959cc6407d529e292343785f3fb226ae658efe912e53b3f2a4f7f4e988aab1860ffe3874b8afc2555ec3017299cfa7d6e1a2008c

        • \??\c:\program files (x86)\subdir\client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • \Program Files (x86)\SubDir\Client.exe

          Filesize

          1.6MB

          MD5

          cef80abf8c3f0cde0085f3253ab0381a

          SHA1

          a7de60994d1c16409700a2deccb6cb1423153967

          SHA256

          3c408a0b4fc83fa3e387a1d45e03009340a75b1519529eb55d910e84d9e6bbe5

          SHA512

          80e4a4dad8c49ed24226346ec769ad595e1ffa26c2167ae0e7c622a10e59cf12a2d2ec1486d7cb168cc3df963d2653be3669855ced35b67548e860573b4f850d

        • memory/108-82-0x0000000000000000-mapping.dmp

        • memory/524-78-0x0000000000000000-mapping.dmp

        • memory/524-81-0x0000000000C30000-0x00000000010A6000-memory.dmp

          Filesize

          4.5MB

        • memory/548-67-0x0000000000000000-mapping.dmp

        • memory/824-63-0x0000000000C30000-0x00000000010A6000-memory.dmp

          Filesize

          4.5MB

        • memory/824-58-0x0000000000000000-mapping.dmp

        • memory/964-69-0x0000000000000000-mapping.dmp

        • memory/1280-86-0x0000000000000000-mapping.dmp

        • memory/1548-64-0x0000000000000000-mapping.dmp

        • memory/1608-70-0x0000000000000000-mapping.dmp

        • memory/1612-71-0x0000000000000000-mapping.dmp

        • memory/1688-66-0x000000006EEE0000-0x000000006F48B000-memory.dmp

          Filesize

          5.7MB

        • memory/1688-61-0x0000000000000000-mapping.dmp

        • memory/1716-56-0x0000000000000000-mapping.dmp

        • memory/1884-87-0x0000000000000000-mapping.dmp

        • memory/1912-54-0x0000000076721000-0x0000000076723000-memory.dmp

          Filesize

          8KB

        • memory/1912-55-0x0000000001000000-0x0000000001476000-memory.dmp

          Filesize

          4.5MB

        • memory/1944-84-0x0000000000000000-mapping.dmp

        • memory/1992-83-0x0000000000000000-mapping.dmp