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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26/04/2024, 04:44

General

  • Target

    2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe

  • Size

    48KB

  • MD5

    635a4b7a6522727705bc276265093af1

  • SHA1

    40fc9e87e5eb3780eff14325426a7c02c0484719

  • SHA256

    264c74e0a84130f9990cd5f794fb323f630f2f761d87dc510d22e79203f37da7

  • SHA512

    3c4ceced6c5de789c9277f360298d38e0fe161e863fe2b6dcccafeed4352857a0eb1f92dfe52d42aa4b3a054737b4ba2f60380b00fa45cb31752ec07cb5570fe

  • SSDEEP

    768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2pK:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7

Score
9/10

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
  • 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\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    0235785a191deb10e28272770a75aaa1

    SHA1

    298bd71d52edcbafda19aa526e45eb7f0d089875

    SHA256

    8a381ed729e8a79483160f5c66b60fe775ae772b9cbd9667a4ca8034c21f4bf2

    SHA512

    6acdee5a80795fef83e93e29a6ea7dcea384aba37ad21a312fb2d6ddc232cb50ddc4e3993b645b141aa781217d96df46c81086e50d3804646893573bb76c7f7e

  • memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1760-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1760-2-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/1760-4-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2548-18-0x0000000000440000-0x0000000000446000-memory.dmp

    Filesize

    24KB

  • memory/2548-19-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB

  • memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB