Analysis

  • max time kernel
    141s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    13/03/2024, 12:19

General

  • Target
    c5dbb25fa983a695d1c13210e2ff0948.exe
  • Size 478KB
  • Sample240313-phhzqacg21
  • SHA256 7c2d6857361e13e7324493776903df6a455695bf15e0452ab92001f1e200c419
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 9 IoCs
  • UPX packed file 12 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • AutoIT Executable 10 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 5 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5dbb25fa983a695d1c13210e2ff0948.exe
    "C:\Users\Admin\AppData\Local\Temp\c5dbb25fa983a695d1c13210e2ff0948.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies Internet Explorer start page
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2360
    • C:\Users\Admin\AppData\Local\Temp\c5dbb25fa983a695d1c13210e2ff0948mgr.exe
      C:\Users\Admin\AppData\Local\Temp\c5dbb25fa983a695d1c13210e2ff0948mgr.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3048
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3048 -s 92
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2988
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:2712
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\chrome.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\chrome.exe
          3⤵
            PID:2784
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /C cacls "C:\system volume information" /e /g "Admin":f
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2768
          • C:\Windows\SysWOW64\cacls.exe
            cacls "C:\system volume information" /e /g "Admin":f
            3⤵
              PID:2812
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /C cacls "C:\system volume information" /e /g "Admin":f
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1780
            • C:\Windows\SysWOW64\cacls.exe
              cacls "C:\system volume information" /e /g "Admin":f
              3⤵
                PID:1136

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                c5dbb25fa983a695d1c13210e2ff0948mgr.exe

                • Path C:\Users\Admin\AppData\Local\Temp\c5dbb25fa983a695d1c13210e2ff0948mgr.exe
                • Size 95KB
                • SHA256 814fc401ecae8a232c94d8e073a2643a2b39e188ed5e468936a921fe33a7e975
                • MD5 SHA1 SHA512 SSDEEP

                autorun.ini

                • Path C:\Windows\SysWOW64\autorun.ini
                • Size 96B
                • SHA256 c8da3155d0b474769de322528adbca295dc27a4f93a6011a1170c7a4b616fe1a
                • MD5 SHA1 SHA512

                setting.ini.old

                • Path C:\Windows\SysWOW64\setting.ini.old
                • Size 1KB
                • SHA256 2be468d7658c2a9c63812110e4c457c91bb19c9d7abd6f243b1229b1a969ac05
                • MD5 SHA1 SHA512

                setting.ini.old

                • Path C:\Windows\SysWOW64\setting.ini.old
                • Size 1KB
                • SHA256 d1116007089c352fa9519504a8a0765fb3bbbd3be2fbf1a138525ba3e75d726b
                • MD5 SHA1 SHA512

                setting.ini.old

                • Path C:\Windows\SysWOW64\setting.ini.old
                • Size 1KB
                • SHA256 53540600e26fd1f6c553a2c6212caca2036aa800a5936d1983ca876cb8362f06
                • MD5 SHA1 SHA512

                setting.ini.old

                • Path C:\Windows\SysWOW64\setting.ini.old
                • Size 1KB
                • SHA256 eb37bdb99235683e1ba7c86cada5200c86b4fe29b88ccf4c7e19546ad3bc26a9
                • MD5 SHA1 SHA512

                chrome.exe

                • Path C:\Windows\chrome.exe
                • Size 478KB
                • SHA256 7c2d6857361e13e7324493776903df6a455695bf15e0452ab92001f1e200c419
                • MD5 SHA1 SHA512 SSDEEP

                memory/2360-84-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-87-0x0000000000150000-0x00000000001AA000-memory.dmp

                memory/2360-102-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-8-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-21-0x0000000000150000-0x00000000001AA000-memory.dmp

                memory/2360-85-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-86-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-13-0x0000000000150000-0x00000000001AA000-memory.dmp

                memory/2360-89-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-93-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-94-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-96-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-99-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/2360-100-0x0000000000400000-0x00000000004FD000-memory.dmp

                memory/3048-14-0x0000000000400000-0x0000000000459F7C-memory.dmp