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Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    31/05/2024, 08:22

General

  • Target

    2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe

  • Size

    89KB

  • MD5

    13be1be18f0c5c065b2b8e75463dee71

  • SHA1

    237eb6ba2579712d64ffdabf59afcee58528f15a

  • SHA256

    1fb1dc47c8c61faac20ade91fc6a2e17daaa39b83c8cac0681ab2aaac4b70103

  • SHA512

    8319166687ce66e54365b87c6b9c0c5e59603cc1cf90bf3ba72c5173abff30d91617b86eee1d6de83e3a3b534fab83b02d8625599b362ac18854f4bb73ff628f

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgQd:AnBdOOtEvwDpj6zK

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 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\2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2172
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2216

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    89KB

    MD5

    ef31fd8d022dbb79d4da1cf122ff8b3f

    SHA1

    4f9142a235155c613125ba8d58f9a55dcb96a004

    SHA256

    898521847f868cf46939f9df05ad907ffd15fcb5f3ac8fb4a4b99b830fc872fb

    SHA512

    015c458a9dfa834461b07743e5e9c67646c9aa1b82843ca702cccf600081be05bfa0f62d6c6c63eb6425df764fde13dd4e17aa245e5360fcb5570237a5d7f072

  • memory/2172-9-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/2172-8-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2172-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2172-0-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB

  • memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2216-18-0x0000000000310000-0x0000000000316000-memory.dmp

    Filesize

    24KB

  • memory/2216-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2216-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB