Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240319-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 15:37

General

  • Target
    ea531aaff6bd48a85fd2487979af5d6b_JaffaCakes118.exe
  • Size 194KB
  • Sample240409-s2zclaee3t
  • SHA256 7bfa96ea7e2f70c3fdee3ce490a283b82a02e8e2f4ca724fc98cf70f90d8b92f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

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

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

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

  • Modifies Internet Explorer settings 1 TTPs 38 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ea531aaff6bd48a85fd2487979af5d6b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ea531aaff6bd48a85fd2487979af5d6b_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /s "C:\Windows\system32\oolalcfmmwlgugdlc.dll"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:3036
  • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
    "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
    1⤵
      PID:1400
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4596
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4596 CREDAT:17410 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:2856
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1412 --field-trial-handle=2256,i,16750283575152780128,2524258836761969159,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:4124

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            suggestions[1].en-US

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\2GELVT35\suggestions[1].en-US
            • Size 17KB
            • SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
            • MD5 SHA1 SHA512 SSDEEP

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsp7939.tmp\System.dll
            • Size 10KB
            • SHA256 91c47a9a54a3a8c359e89a8b4e133e6b7296586748ed3e8f4fe566abd6c81ddd
            • MD5 SHA1 SHA512 SSDEEP

            oolalcfmmwlgugdlc.dll

            • Path C:\Users\Admin\AppData\Local\Temp\oolalcfmmwlgugdlc.dll
            • Size 381KB
            • SHA256 13e04a3fc70b4215feb1c4d01d74a1084d2248caa6196ff4ba91d196095c90c1
            • MD5 SHA1 SHA512 SSDEEP

            memory/2932-10-0x0000000003EB0000-0x0000000003F15000-memory.dmp