Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-04-2024 15:30

General

  • Target

    f16300d6d4765295c22d114d06373463_JaffaCakes118.exe

  • Size

    97KB

  • MD5

    f16300d6d4765295c22d114d06373463

  • SHA1

    c0549f51aee3c729ebc38badab63acf3c8655b7e

  • SHA256

    6eeb5c03c0c5400e0eb0eb08f6d494a6de199ed1ad44e2a3cfac772681f21b2e

  • SHA512

    f37aac8fb4e077f4357dc72af9d0685e5f63dea01ccfeec81f9a0993e650ac2f6d8c578072628b470869d015f5d993aa61a5c5abb3be5bcb942bdd00c0c73c1b

  • SSDEEP

    1536:Nb0UmA5JiTmHxJtUlAn9IO+sGyfYaInyuddxnpF/iuDUR57Zld5KATgty7V4hxfE:57mjTmRJSQWxyudf2T5KATgKVVQY5

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\f16300d6d4765295c22d114d06373463_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f16300d6d4765295c22d114d06373463_JaffaCakes118.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:940
    • 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:4316
    • 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:3596
      • 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:3224
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c \DelUS.bat
      2⤵
        PID:4452
    • 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=3696 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:1496

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\DelUS.bat

        Filesize

        271B

        MD5

        252889d3869deba6315d6c3b11ce84d8

        SHA1

        941d9e82932e4bf136c85fc61e29cbb0dad3e6b0

        SHA256

        5747144f85be15d7c09aa09f1f565e7640257e314ea362b680713d1d6017df2c

        SHA512

        bc942556e6a36240fc058167d67fba37a651915f9211ddb0b2f39bef52dd1a6b260c7b9b6fab6e5ce0987ee509f0abe2a62631272b1fd7e3c358873a6cf1056c

      • 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/940-0-0x0000000000400000-0x0000000000448000-memory.dmp

        Filesize

        288KB

      • memory/940-1-0x0000000000400000-0x0000000000448000-memory.dmp

        Filesize

        288KB

      • memory/940-13-0x0000000000400000-0x0000000000448000-memory.dmp

        Filesize

        288KB