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Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/04/2024, 14:45

General

  • Target

    e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe

  • Size

    12KB

  • MD5

    e2c5b96c2e7d8eab8c67326a13fe449a

  • SHA1

    4518bfd39e40e6287fc2d2783a4d43b6ef652cc6

  • SHA256

    d5c62df11d9b96104bdb9fd411142d931c621740b90c2ad790802f244251a0c0

  • SHA512

    16eb8502660bbb3f3ce19e56121461cc2737eb6fdb3b33aad22a70a207093075f63e4d304a995b7dc03b85455b65a9a9d3336846f00a87de1f3b112de69cec11

  • SSDEEP

    192:LWvtPFn/nnQQRd4x6/5GicffwP8SkuMW7z7lEPwzPeIEv/7pPNJTf8g:yFn/nnhRd4QBfafetZMEFzm/9PNZf3

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 5 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Windows\SysWOW64\rexljehk.exe
      C:\Windows\system32\rexljehk.exe ˜‰
      2⤵
      • Executes dropped EXE
      PID:1940
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe.bat
      2⤵
      • Deletes itself
      PID:2440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe.bat

    Filesize

    210B

    MD5

    85bb108f9917b9bce9139a4e3dc136a2

    SHA1

    cdccce71f6fbb0831781e79ed14a7853c007b0ba

    SHA256

    03cc47917cacaf345e08cc77f98cbda58d6b8521c09b1e96643a536e0e6fc6fb

    SHA512

    1615a990b5fadab1b781049d08f8fd3ee920fab02ef4400f31c91b3aee7c7522613bc4f99cfe2d2c1be5116f20ad2165cc20d08e6a63cc552be4185d63ebe430

  • \Windows\SysWOW64\rexljehk.exe

    Filesize

    12KB

    MD5

    e2c5b96c2e7d8eab8c67326a13fe449a

    SHA1

    4518bfd39e40e6287fc2d2783a4d43b6ef652cc6

    SHA256

    d5c62df11d9b96104bdb9fd411142d931c621740b90c2ad790802f244251a0c0

    SHA512

    16eb8502660bbb3f3ce19e56121461cc2737eb6fdb3b33aad22a70a207093075f63e4d304a995b7dc03b85455b65a9a9d3336846f00a87de1f3b112de69cec11

  • memory/1660-0-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1660-4-0x0000000000230000-0x0000000000240000-memory.dmp

    Filesize

    64KB

  • memory/1660-11-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/1660-15-0x0000000000230000-0x0000000000240000-memory.dmp

    Filesize

    64KB

  • memory/1940-12-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB