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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/09/2024, 13:32

General

  • Target

    dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe

  • Size

    38KB

  • MD5

    dc5b50523a957f642b96eed93363f6b5

  • SHA1

    471ba19dec8d33057a73bbd04d0bf962b68f3fd6

  • SHA256

    fb9e34230f77529ed70cbbb9ef92d2d65ba379e7c795f41cf92b8650f4380338

  • SHA512

    4b6e129cf659fbc933394afa0301c7d6d6c8110d1ce48776e13ba88dcf5fc983ab0c6f14ece0a16d1892f9373614f78c6838cef4add74f806b51dcb5ca5d98b9

  • SSDEEP

    768:bOvHPRamDrCFnAcBDu4RMEGx8JPj2cBPkbtgxV6tm2/:bOncmDMnAcBDuk2x85j5mbtC6w2/

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.

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\dc5b50523a957f642b96eed93363f6b5_JaffaCakes118.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3292
    • C:\Windows\SysWOW64\net.exe
      net stop cryptsvc
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4748
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop cryptsvc
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1772
    • C:\Windows\SysWOW64\sc.exe
      sc config cryptsvc start= disabled
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3740
    • C:\Windows\SysWOW64\sc.exe
      sc delete cryptsvc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4596
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Users\Admin\AppData\Local\Temp\1726147924.dat, ServerMain c:\users\admin\appdata\local\temp\dc5b50523a957f642b96eed93363f6b5_jaffacakes118.exe
      2⤵
      • Deletes itself
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:4068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\1726147924.dat

    Filesize

    42KB

    MD5

    721923cb55d79d01a03ef400392a9d6f

    SHA1

    c3b454543c6b9a6f89aa726f826a9a48c81f67c0

    SHA256

    b7d2296002a41417ca177fbc1881c56ee82bf5f05c4c2703c8e2f50f1900e0cb

    SHA512

    efbbab568980bb666fde43a287b30fb251c09df8874b60ef9e47dc19c0736e2fc3700b2c92cb78ba4c68b35728e6137a3b8f3fecf4f1f163a83fe0709d0bd059

  • memory/3292-0-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3292-13-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3292-16-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB