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Analysis

  • max time kernel
    133s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 04:04

General

  • Target

    2024-05-12_739888dd4aeb933297d086d7ff781e9f_cryptolocker.exe

  • Size

    40KB

  • MD5

    739888dd4aeb933297d086d7ff781e9f

  • SHA1

    e1b16a5f265b118ab9815d1db9ff688a4b8db5b0

  • SHA256

    8eb926fff23e14ae296e980014fd11a1de7ba668a49da26f150a7e8d6c81db1f

  • SHA512

    6e4dd8f620fdc987080b57298aca2c7d04bd0b91f552a9ef66d316b85ff73d5c39b73944f1a893d1f4e05650a23904951f2378c46446f2df98001439e31b285e

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDbZ:ZzFbxmLPWQMOtEvwDpjLeJAsKcbZ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-12_739888dd4aeb933297d086d7ff781e9f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_739888dd4aeb933297d086d7ff781e9f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4044
    • 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:2716

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    74ea15560937161b07f5b417cabb0738

    SHA1

    03bdb9998ca1e7ff2781a026bb1bc8d7e060ac1d

    SHA256

    6b148a483a7de2767f35062dcaa887f4dd16a5dd4bfe4e8e07c318e4d32733d2

    SHA512

    7ed39de3b3ad7ee60d8111f5cbaf6526412d0a9ba5d8e9d2bd1e1763f1029441fc66a06de267a048fceaec2b2393f7fa408574f4d36f1ccd433cf9279c5d066d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2716-18-0x0000000000450000-0x0000000000490000-memory.dmp

    Filesize

    256KB

  • memory/4044-0-0x0000000000490000-0x0000000000493000-memory.dmp

    Filesize

    12KB

  • memory/4044-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4044-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4044-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4044-17-0x0000000000490000-0x0000000000493000-memory.dmp

    Filesize

    12KB