Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/06/2024, 23:10

General

  • Target
    002063008bff66e2353170ccb5ff61ed_JaffaCakes118.exe
  • Size 42KB
  • Sample240621-25pr1aydmj
  • SHA256 1f72fa89b0fe9a4c6d49d57a690dce4f92cf394443c44695387044962e2534c2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Windows directory 2 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Modifies Internet Explorer settings 1 TTPs 14 IoCs
  • Modifies registry class 64 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\002063008bff66e2353170ccb5ff61ed_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\002063008bff66e2353170ccb5ff61ed_JaffaCakes118.exe"
    1⤵
    • Checks whether UAC is enabled
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2660
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "c:\windows\vjdothuzfgq.dll"
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:920
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Q37E5DH.BAT
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\SysWOW64\reg.exe
        reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Background_Sounds /t REG_SZ /d no /F
        3⤵
        • Modifies Internet Explorer settings
        PID:4160
      • C:\Windows\SysWOW64\reg.exe
        reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v Play_Animations /t REG_SZ /d no /F
        3⤵
        • Modifies Internet Explorer settings
        PID:4484
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /u /s vbscript.dll
        3⤵
          PID:1148
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /u /s scrrun.dll
          3⤵
          • Modifies registry class
          PID:3468
        • C:\Windows\SysWOW64\reg.exe
          reg.exe delete HKLM\Software\Microsoft\Windows\CurrentVersion\Run /F
          3⤵
          • Adds Run key to start application
          • Modifies registry key
          PID:4172
        • C:\Windows\SysWOW64\reg.exe
          reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Disable Script Debugger" /t REG_SZ /d yes /F
          3⤵
          • Modifies Internet Explorer settings
          PID:4412
        • C:\Windows\SysWOW64\regsvr32.exe
          regsvr32.exe /u /s msvidctl.dll
          3⤵
            PID:3500
          • C:\Windows\SysWOW64\regsvr32.exe
            regsvr32.exe /s jscript.dll
            3⤵
            • Modifies registry class
            PID:208
          • C:\Windows\SysWOW64\reg.exe
            reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Display Inline Images" /t REG_SZ /d yes /F
            3⤵
            • Modifies Internet Explorer settings
            PID:4860
          • C:\Windows\SysWOW64\regsvr32.exe
            regsvr32.exe /u /s itss.dll
            3⤵
              PID:1492
            • C:\Windows\SysWOW64\reg.exe
              reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Display Inline Videos" /t REG_SZ /d no /F
              3⤵
              • Modifies Internet Explorer settings
              PID:4116
            • C:\Windows\SysWOW64\reg.exe
              reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v DisableScriptDebuggerIE /t REG_SZ /d yes /F
              3⤵
              • Modifies Internet Explorer settings
              PID:4204
            • C:\Windows\SysWOW64\reg.exe
              reg.exe ADD "HKCU\Software\Microsoft\Internet Explorer\Main" /v DisableScriptDebuggerIE /t REG_SZ /d yes /F
              3⤵
              • Modifies Internet Explorer settings
              PID:2064

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              Q37E5DH.BAT

              • Path C:\Q37E5DH.BAT
              • Size 1KB
              • SHA256 5c609292beca70adadda6789b23809a77a5a396b146e0e3a82f14ebc99b0fdbc
              • MD5 SHA1 SHA512

              vjdothuzfgq.dll

              • Path \??\c:\windows\vjdothuzfgq.dll
              • Size 28KB
              • SHA256 46aaf739cbf79393bf5dc03f392cb03b5f21251cc60498b7907bac57e86e58b7
              • MD5 SHA1 SHA512 SSDEEP

              vjdothuzfgq.txt

              • Path \??\c:\windows\vjdothuzfgq.txt
              • Size 42KB
              • SHA256 eda1df34c15d24aba313d4e33e127672bf21e9db902a857db73b0a133877f0f4
              • MD5 SHA1 SHA512 SSDEEP