Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/06/2024, 07:32

General

  • Target

    2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe

  • Size

    62KB

  • MD5

    9db34b4cee6971c03bf44f646ad3fa6b

  • SHA1

    e2a4b505eea6d88c5775318e0d043a2845b205a3

  • SHA256

    38d54562bfc0911c7da587f8ce77bace6e873a2dde7e048a6aec38d3b0c34524

  • SHA512

    45d8b47c49fc246354a37129623ed80f52a9e8d0b4b487d6c5dc327af05c82136c47411978675fd740af236e70d539e22fb59b6797b25a87a9b85cbc1d049cd7

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHNMh73U:1nK6a+qdOOtEvwDpjjU

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4400
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2792

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    ec1eac9d402a6c4853321290a81ae641

    SHA1

    cd216df090423b82c2e208ccefcbd56235572b45

    SHA256

    05a7ec8d490540d482a5ed0ab613ad2f912a9877e87da7834bbc8efc46536f47

    SHA512

    513e38697e89689d6cc17b6bc1721b2bde7557b9d3701e34fb261f38876ab5f3084a4f15e7c6bd68a1d273aea25db45e01203188e607405cf7443867fa0c458c

  • memory/2792-18-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2792-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2792-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2792-27-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4400-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4400-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4400-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/4400-9-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4400-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB