Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11-05-2024 14:34

General

  • Target

    2024-05-11_f4c6732e6082f572e97d548403f578d7_cryptolocker.exe

  • Size

    88KB

  • MD5

    f4c6732e6082f572e97d548403f578d7

  • SHA1

    8200660db4677ac3e2e3b84a73301cc4818d2697

  • SHA256

    49d0edb6a97b487d8c68bff3e6d02ecd001cc3f6372ed4b431ac32be408947d3

  • SHA512

    3fa3d32f43f7a669391eb2b184ad5cb68e55cc808e2f4d47e033d8f76433b5caff012ac6ea3b1f3c80a9dcf86cc540139dcf60659e0f180af64e4c9aea93e9f2

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgQq:AnBdOOtEvwDpj6zl

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 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\2024-05-11_f4c6732e6082f572e97d548403f578d7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_f4c6732e6082f572e97d548403f578d7_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    2fb72ff6a08ea09a675927f2e86ed618

    SHA1

    73ee16bc9915469cbb4b1c91febd749b2282bbf6

    SHA256

    2017fbd7e0db584a0d0bd5c4ed6f56fcd610e30d4e6840f285c40d75ad42e44f

    SHA512

    1f2b62c5383ad50c3f7f2f326c2d9b2d8a34db472634468d86ef0031c9e1c21ad90e06bac89594f30f83111f1136cb3aeee590944f52775088021c971fb9bca7

  • memory/1688-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1688-1-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/1688-2-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/1688-9-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/1688-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1688-14-0x0000000000630000-0x000000000063F000-memory.dmp

    Filesize

    60KB

  • memory/2936-20-0x00000000001C0000-0x00000000001C6000-memory.dmp

    Filesize

    24KB

  • memory/2936-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2936-21-0x00000000003F0000-0x00000000003F6000-memory.dmp

    Filesize

    24KB

  • memory/2936-28-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB