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Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05/10/2024, 07:57

General

  • Target

    16d431c2e2862ee1caa00866610eafb2_JaffaCakes118.exe

  • Size

    634KB

  • MD5

    16d431c2e2862ee1caa00866610eafb2

  • SHA1

    3f458e8a1643f74f233da740d4136e9c8335f015

  • SHA256

    591a37517539a001143870761f3da71087556c5f3450bf929c26ac12ea7427f6

  • SHA512

    1236b08e3091ccb45f99b871d9dcda7a642cbef1727f61e6063a49b6fee0e1ab092788c40339549657ba719093c62eca13c238bbc6724f2c5222a9ec235ab593

  • SSDEEP

    12288:L2Kher0pqF5G4GjeZHkwuPikQ7lKH5p5H9x1beZHkwulinQZlKR5pxxoiR0:L2+qXG4GjeZEXi37l6Br1beZE9iQZl2O

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • 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 3 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 22 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16d431c2e2862ee1caa00866610eafb2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\16d431c2e2862ee1caa00866610eafb2_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home1104\ie\MediaWatchV1home1104.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3060
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2656

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home1104\ie\MediaWatchV1home1104.dll

    Filesize

    85KB

    MD5

    b98d49f9d9ab1df0a82297113c63ee51

    SHA1

    42f039721a0a17267615bfde7f9e8e2af4a90122

    SHA256

    a08711f19e55112675c7f2cd63c934c828330d8b74e70a1d478d21140bce6015

    SHA512

    6f0782a64a47163f23cbce0b9ee014369a8d58c211d854abdd8f05240615b7dd4704e68cfefec0fa2c7744cfc69193379c7ad18280c467b8ea0cc03323b57ce7

  • \Users\Admin\AppData\Local\Temp\nsi497F.tmp\aminsis.dll

    Filesize

    559KB

    MD5

    51ba1095f0ae45a2d444bea506cb9ad4

    SHA1

    038a5d53d055a6d440bd2c8864c2f51db206c5e5

    SHA256

    b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

    SHA512

    f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361