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Analysis

  • max time kernel
    16s
  • max time network
    18s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    02/10/2024, 14:23

General

  • Target

    0b19d143d72200959250ef3e041cbbc0_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    0b19d143d72200959250ef3e041cbbc0

  • SHA1

    40fac35109cb573b43230643b548da0e904bc9b1

  • SHA256

    d1d626b7690fef2026c44746436638bbb92286dc44d9e567d4856e39f98ec199

  • SHA512

    2021180654fc9e0569a2869a60c78b4d20170855d2f309d356164b0d35213a63cd3032199b436d2188d09beafe077853b1348f91edf85600bc3f50413145395d

  • SSDEEP

    12288:OqZD+6G4GQTq4OaQQTYJ8eP4/L5uO7D3f5BJq4yajQTEJ8ePv/b5uO7aLvHPAx:OqZlG4GQm4OaHYJ8eP4D5uOHBBM4yaq0

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\0b19d143d72200959250ef3e041cbbc0_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\0b19d143d72200959250ef3e041cbbc0_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:2876
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release568\ie\RichMediaViewV1release568.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:2240
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release568\ie\RichMediaViewV1release568.dll

    Filesize

    85KB

    MD5

    45bc4ca8f88b3c91acf8c12707dacb32

    SHA1

    fba5b5ec72b7f1036422a13029c09b6c418d1bbe

    SHA256

    12314622959a2fe63e6134d725de85c4b38673157960e564f6146459af6e6da9

    SHA512

    42a4723882c348642ea427614891de7d49f729ff464248d8973cd05712d5d11f604bc7dd08e9d08a1c77aedb74fc2a4603de993497c60424528eb874e51e720d

  • \Users\Admin\AppData\Local\Temp\nsj9F4C.tmp\aminsis.dll

    Filesize

    567KB

    MD5

    450753ad96785a240a39deccab3af0d0

    SHA1

    21c544064d2ffa6444508268ce258a330d459fc5

    SHA256

    1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

    SHA512

    c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab