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Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    08/07/2024, 09:29

General

  • Target

    2bd1fb53eaa50768839e2f0af0f28776_JaffaCakes118.exe

  • Size

    38KB

  • MD5

    2bd1fb53eaa50768839e2f0af0f28776

  • SHA1

    128ed940f232e13e96b03132365ef17c54c5ac2a

  • SHA256

    90062e6119e33002894556095c0a649a4b2b3fffd4a06923d3d85f1009c35b37

  • SHA512

    37e851d8a71cb2885476528c929422f7db73e48b70579eef85f7369e373a3e809a641a91810a524168358e90f9dd07588de287a612aa08447c35f2b2610fdc74

  • SSDEEP

    768:BDRyti+nKpMbrOhvLXcgQqTO/yXeL9+K62aHAAxgjxPvlZ4:bl+nKpUChvLXcgQ4uL4rNHAOKlvlZ4

Malware Config

Signatures

  • Disables service(s) 3 TTPs
  • Stops running service(s) 4 TTPs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 3 IoCs

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

  • Drops file in System32 directory 11 IoCs
  • Launches sc.exe 2 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bd1fb53eaa50768839e2f0af0f28776_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2bd1fb53eaa50768839e2f0af0f28776_JaffaCakes118.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Windows\SysWOW64\net.exe
      net stop cryptsvc
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop cryptsvc
        3⤵
          PID:1644
      • C:\Windows\SysWOW64\sc.exe
        sc config cryptsvc start= disabled
        2⤵
        • Launches sc.exe
        PID:3020
      • C:\Windows\SysWOW64\sc.exe
        sc delete cryptsvc
        2⤵
        • Launches sc.exe
        PID:3036
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Users\Admin\AppData\Local\Temp\1720453282.dat, ServerMain c:\users\admin\appdata\local\temp\2bd1fb53eaa50768839e2f0af0f28776_jaffacakes118.exe
        2⤵
        • Deletes itself
        • Loads dropped DLL
        PID:2520

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\1720453282.dat

      Filesize

      41KB

      MD5

      d239375a31f89dc6e0bcb23911182c30

      SHA1

      13bdbce0d2ca4eca245e96d5b6793968c44d0889

      SHA256

      8280227369f696e6f67f07b3379882f5e2b036c626f800f1c0e130e3f306e31a

      SHA512

      bae8368ede5d7263b0a4e22b801f220cba5ed9858dd0e059c36039e466f1307e24ce78cf1ad91b094cf4e1f5aaf4bd4b173fc15186105410e443a6438d95d53f

    • memory/2356-0-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

    • memory/2356-11-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB

    • memory/2356-15-0x0000000000400000-0x0000000000418000-memory.dmp

      Filesize

      96KB