Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    30/05/2024, 01:23

General

  • Target

    2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe

  • Size

    72KB

  • MD5

    05b2ffadf68d50b9a2691d7c74b0781a

  • SHA1

    ced17c1e3f719c03aae7a14a20d8ac58402fe0d0

  • SHA256

    d43d6ffdf53d4871ad07fc84417d26b109551828335ca845fe970a9ffbb53696

  • SHA512

    3d5a8530f400b014bd4d598562f8947684845d4980d6f5a82690a8dd027a46b5b7189791645476377aa973bddd222a53d3dce2e81e46e11bf82d5481d762056f

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs97x2:C4Q2c94OtEvwDpj4H8zR

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:940

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • \Users\Admin\AppData\Local\Temp\misid.exe

          Filesize

          72KB

          MD5

          b4ce90653647fbf96afa86519366f66c

          SHA1

          8ba4736f6c6615eb22e8d35b9d8554c2cb0c4bf5

          SHA256

          15be031476f39cebff4140b5388bd3b8a895edec641e0268057b68d3f839d1b2

          SHA512

          83ebd47bd4dc3226ae21e11ee9aaeaa6c6c028d8abef949651aa731c5f9b220f7c5fec641de330eec9362ab63b06ddffde480d19459cd707e70f602d731b11ff

        • memory/940-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/940-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

          Filesize

          24KB

        • memory/940-19-0x0000000000460000-0x0000000000466000-memory.dmp

          Filesize

          24KB

        • memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2288-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2288-1-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2288-9-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2288-2-0x0000000000360000-0x0000000000366000-memory.dmp

          Filesize

          24KB

        • memory/2288-16-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2288-28-0x0000000002060000-0x0000000002070000-memory.dmp

          Filesize

          64KB