Analysis

  • max time kernel
    125s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2024 23:39

General

  • Target

    15553c55b740f69e80584d0e52be253b_JaffaCakes118.exe

  • Size

    634KB

  • MD5

    15553c55b740f69e80584d0e52be253b

  • SHA1

    81fd1f6af3f6e65a87f99a950560a5e743603442

  • SHA256

    92134d4e7dd2d09d8dd772fa966c486e5128b00b446a2f6ac04fbb17f19ec713

  • SHA512

    6b1dff175d52bc501dffd9ca1c9b5d370f73968c2a48463b7fec9f95c02d7c4611c483914745f2c1f77d6954f17b52f87568bed8fb3ad8155dc5912aa510a284

  • SSDEEP

    12288:NsaRG4GjeZHkwuPikQ7lKH5p5H9x1meZHkwu5iRQFlKd5pDCsQz7PYG:N1G4GjeZEXi37l6Br1meZExi2Fle7CbJ

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\15553c55b740f69e80584d0e52be253b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\15553c55b740f69e80584d0e52be253b_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:2736
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home146\ie\MediaWatchV1home146.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:2892
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home146\ie\MediaWatchV1home146.dll

    Filesize

    85KB

    MD5

    4ec2d7e11d4a0e0f875fbf6c0d743c3c

    SHA1

    c163dfcd284ddb46d369057614508deef98c85b4

    SHA256

    72bd5dbe54f056f36b0b8499e5c703d96e4ea0c2c35048e026cd76317945245d

    SHA512

    1b38a325dab013614f50f18bc610f53f95caa4ff3164a64b5c6bc811d976b8211ff59aa3da4a3ba7af1d8a24d7e2819954813e67fc92792c7e64d2a7f26e559c

  • \Users\Admin\AppData\Local\Temp\nsj43F4.tmp\aminsis.dll

    Filesize

    559KB

    MD5

    51ba1095f0ae45a2d444bea506cb9ad4

    SHA1

    038a5d53d055a6d440bd2c8864c2f51db206c5e5

    SHA256

    b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

    SHA512

    f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361