Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-06-2024 06:28

General

  • Target

    03a1e6da34d0b6d3b0ddc27feb6f0e7d_JaffaCakes118.exe

  • Size

    97KB

  • MD5

    03a1e6da34d0b6d3b0ddc27feb6f0e7d

  • SHA1

    7aef20691cfd5cf39e64df85ae937bc701cf2317

  • SHA256

    dfae13cb3c08df7aebd29e26068273c57366110218747318a47d007a0d15a49e

  • SHA512

    ba71451823e3d45889a92b55b9c3d3464491e6a563c6ce6616c40685f3c97721f40b2ee16d86a0b61a67e3f223e8c79c6318b09c418ebe298dc7e3c48f89ba5c

  • SSDEEP

    3072:Q7mx2cZ8UtE2UvMzSKMLTQ7ja8qULZsJge:QKxfo5yo3Q7ja8qe

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 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 3 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03a1e6da34d0b6d3b0ddc27feb6f0e7d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\03a1e6da34d0b6d3b0ddc27feb6f0e7d_JaffaCakes118.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3704
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s "C:\Program Files (x86)\PostTip\PostTip.dll"
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:3368
    • C:\Program Files (x86)\PostTip\PostTip.exe
      "C:\Program Files (x86)\PostTip\PostTip.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1624
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32 /s "C:\Program Files (x86)\PostTip\PostTip.dll"
        3⤵
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies registry class
        PID:4084
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c \DelUS.bat
      2⤵
        PID:2748

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\DelUS.bat

      Filesize

      271B

      MD5

      648ba72e35508a681356077d62665a77

      SHA1

      8911df660f599091b298c55bd9a410002373b776

      SHA256

      70d21ad9173466ab16461b678b3d30a7a52eb1b5aafe0437ed322ceb5df7cc1d

      SHA512

      0eef267afd22dd5578b856735944c49f760c116129894e721a2f14393cecd9789798c4e5473441fa4fe0e0b39e6f4dfdcab381e310e8eaf46dd80cb5e94a3fbe

    • C:\Program Files (x86)\PostTip\PostTip.dll

      Filesize

      162KB

      MD5

      dc62c2f61a803bd1292b0b169fa6f8d9

      SHA1

      117ecef652f645ab87a611eab5bc16ae085d6ffb

      SHA256

      7434776f552dde651370f0e43026def6c56c412eb1c62d5214406b34144319af

      SHA512

      55f22c83fcfccf10bb799af214b456392f43b7c394a7dcebbe2fe7059c65ba2fad859c9709b4ca2ab28ab55f03e054196a5b3857a0ec09c3b603a3458cb212d1

    • C:\Program Files (x86)\PostTip\PostTip.exe

      Filesize

      38KB

      MD5

      c2b5be376cac31c0b01603105ae4ea89

      SHA1

      4fcfa0181ca5478103c6999199957be40f4a937b

      SHA256

      8ec9ca043b655d4bf868ccd7d9d5fdd4e23ad8610aed2fb983370437b7851feb

      SHA512

      d17e798a414a6d2295f13339a10151f2a34cff5a7d6c81862c26a0c4ac831bf9f867f9f2bf028fa15f189a93f8d8883a334a9857a33bcabac916376267c9da72

    • memory/3704-0-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3704-10-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3704-13-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB