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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/07/2024, 07:43

General

  • Target

    40c9ec09300645004af4ce1b5594901e_JaffaCakes118.dll

  • Size

    36KB

  • MD5

    40c9ec09300645004af4ce1b5594901e

  • SHA1

    e48edd5ce62db95592c6dd92cbee66eebabd0c22

  • SHA256

    8e6e70cfd53cb4c611302cc01b910f642c6334e63f605aa319c003cb44d5af5e

  • SHA512

    290b09d0bdd7a6cefd7eae97be818f91fdc2eaf5da80a0cccae906b9d10b8ba49b0c9fd7f30ae544008e69c344e942af14197f6481ed7ab742f81e541a36c7cf

  • SSDEEP

    768:jt8dldJN5LXcyXrCD1tDMByGqnXm3+AVWEvaLW:EdzcyXrC/GsnXiVWEvaLW

Malware Config

Signatures

  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 2 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\40c9ec09300645004af4ce1b5594901e_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\40c9ec09300645004af4ce1b5594901e_JaffaCakes118.dll,#1
      2⤵
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:720
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
        3⤵
        • Checks computer location settings
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:2964
        • C:\Windows\SysWOW64\regedit.exe
          "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
          4⤵
          • Runs .reg file with regedit
          PID:1120

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\a.reg

    Filesize

    152B

    MD5

    b100f5324ef74ded0b998e64d07a2e19

    SHA1

    40b0d7f51bf2dd8451f1b723d21355c471a5fa46

    SHA256

    3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042

    SHA512

    c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04