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Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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
  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Windows\SysWOW64\rexljehk.exe
      C:\Windows\system32\rexljehk.exe ˜‰
      2⤵
      • Executes dropped EXE
      PID:1908
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\e2c5b96c2e7d8eab8c67326a13fe449a_JaffaCakes118.exe.bat
      2⤵
        PID:3352

    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

    • C:\Windows\SysWOW64\rexljehk.exe

      Filesize

      12KB

      MD5

      e2c5b96c2e7d8eab8c67326a13fe449a

      SHA1

      4518bfd39e40e6287fc2d2783a4d43b6ef652cc6

      SHA256

      d5c62df11d9b96104bdb9fd411142d931c621740b90c2ad790802f244251a0c0

      SHA512

      16eb8502660bbb3f3ce19e56121461cc2737eb6fdb3b33aad22a70a207093075f63e4d304a995b7dc03b85455b65a9a9d3336846f00a87de1f3b112de69cec11

    • memory/1908-7-0x0000000000400000-0x0000000000410000-memory.dmp

      Filesize

      64KB

    • memory/2220-0-0x0000000000400000-0x0000000000410000-memory.dmp

      Filesize

      64KB

    • memory/2220-6-0x0000000000400000-0x0000000000410000-memory.dmp

      Filesize

      64KB