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Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    07/04/2024, 00:04

General

  • Target

    e39b7454e8ad23a60bd64e79a97b6229_JaffaCakes118.exe

  • Size

    12KB

  • MD5

    e39b7454e8ad23a60bd64e79a97b6229

  • SHA1

    ecbfe1e129211aa5be50bb8861d0daff24e38f88

  • SHA256

    74a42ffbfcfe93903cae0dc8cdf2267171b8fd2efe82d14962cb2b7586126d7e

  • SHA512

    f279a23ca67165af46bbb611db93150cde62e2020700367e4ac1789f3d870b9dfb176e358db95f1f4fa7e850ccc40b22ddca7df7e14aa5a0a9e4fc5629036329

  • SSDEEP

    192:c8K6Y7Wk4cVC0acpVnXYHoJywJFa1qOvxWHddBXkdLSQt+lKM+:C6Y4c6UVnXYIJtUpWp0dLFt+n+

Score
8/10

Malware Config

Signatures

  • Modifies AppInit DLL entries 2 TTPs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e39b7454e8ad23a60bd64e79a97b6229_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e39b7454e8ad23a60bd64e79a97b6229_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:460
    • C:\Windows\SysWOW64\zesttnsk.exe
      C:\Windows\system32\zesttnsk.exe ˜‰
      2⤵
      • Executes dropped EXE
      PID:2064
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\e39b7454e8ad23a60bd64e79a97b6229_JaffaCakes118.exe.bat
      2⤵
      • Deletes itself
      PID:2552

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\e39b7454e8ad23a60bd64e79a97b6229_JaffaCakes118.exe.bat

    Filesize

    210B

    MD5

    3ce37db588076badc1f567e5122401ef

    SHA1

    b97592cad2b384ccc5d2e17b09d9e88e33e8d629

    SHA256

    a62f6bc75ffd35418db1a0e68f60c4bd1fbe505b1ec322327325f6df5f4ea9aa

    SHA512

    51f5c2e000e6bf8d7248500d914dfeb921e8049b8458ae53cd003c82027776aa72cc0b3d2277bae0169687cab8b80ad3b35a9cacb0021a61043a49ac1eb26619

  • \Windows\SysWOW64\zesttnsk.exe

    Filesize

    12KB

    MD5

    e39b7454e8ad23a60bd64e79a97b6229

    SHA1

    ecbfe1e129211aa5be50bb8861d0daff24e38f88

    SHA256

    74a42ffbfcfe93903cae0dc8cdf2267171b8fd2efe82d14962cb2b7586126d7e

    SHA512

    f279a23ca67165af46bbb611db93150cde62e2020700367e4ac1789f3d870b9dfb176e358db95f1f4fa7e850ccc40b22ddca7df7e14aa5a0a9e4fc5629036329

  • memory/460-0-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/460-10-0x0000000000030000-0x000000000003F000-memory.dmp

    Filesize

    60KB

  • memory/460-19-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/2064-11-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB