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Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 05:28

General

  • Target

    2024-05-27_44ec6464cc133beebf701842195de9c6_cryptolocker.exe

  • Size

    49KB

  • MD5

    44ec6464cc133beebf701842195de9c6

  • SHA1

    5472cb1a4a7218443fc925c9f8dd9e16bb91d6d0

  • SHA256

    8e604686c7c21a47cf10877e957baac7df5cf68133fe08ee7d469bec9998ed08

  • SHA512

    3087d7159f38801368523da45dd2c316be8b70a5edf051c21c5cea4bb3286bdf49ae020a9c357b0cb54ee3e572b8036009b7196359458564d661360af6a1458d

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0ndP:vj+jsMQMOtEvwDpj5HczerLO04BSP

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_44ec6464cc133beebf701842195de9c6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_44ec6464cc133beebf701842195de9c6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:212
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    bf4af67d213380198980e1833d4af0f2

    SHA1

    58ff4a47e7cfcd526599f7072da3e90ec3f47c74

    SHA256

    dc688d19fb96ba455be90a90ff503f3834c3a6619142771962ac7d6cb82ee110

    SHA512

    c7250bb4f3bf4337f50cb430619571f0abe88f9b951552d0cd8e14dc0246bed71b4b34bedeef0b621b416b776f740cb69849ef21182ee7effabcda0eb7266180

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/212-0-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/212-7-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/212-1-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/4292-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4292-23-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB