Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2024, 21:23

General

  • Target

    2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe

  • Size

    74KB

  • MD5

    8ccc302902f66f163af206baae709628

  • SHA1

    4ca4de9c0d893f4734fc4d7959ee12713a0c3fb1

  • SHA256

    6c7a0b370c4356488b97dc5e242b4153b9820d5bf20dd11d9dbb0f7f38da201b

  • SHA512

    bf6a417b04bd8ea75e95cb95f14df22feb329354f2d66a2c8a7637699fa1f0317fef59ddab9717c13f73afa4d45612fff61d6a412a8b821c6ec63ac58187cf18

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalVr5:1nK6a+qdOOtEvwDpjC

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\2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5028
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    74KB

    MD5

    164ab32656c998dfdccd08bb8cdc98ba

    SHA1

    d50a496b5d213ba57e78fbd29834f5d79494f6fe

    SHA256

    51b546728c67f8a4cc910dc9711b813d6f82d6d25052b862d18807ac4284a4d8

    SHA512

    4c6716272455e445bde55183f215638d6961b2a8905b7dfd0d5f84b5dcb9d5832181423063997e72e0e7294dd6839d712a8602ecbf4235ce5f150c101333db78

  • memory/4292-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4292-20-0x00000000007C0000-0x00000000007C6000-memory.dmp

    Filesize

    24KB

  • memory/4292-21-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

  • memory/4292-27-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/5028-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/5028-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5028-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/5028-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5028-18-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB