Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 15:47

General

  • Target

    2024-05-21_8ee06708a2db40e643e36c7133463ec6_cryptolocker.exe

  • Size

    83KB

  • MD5

    8ee06708a2db40e643e36c7133463ec6

  • SHA1

    877ef1387003bee860c76efef024d77b4b2aea88

  • SHA256

    5261d38d8be4a4bed151149826950a2d9fccf70b5a1acec92bea5825ec30ef5c

  • SHA512

    0b035c0dade9ec6fe2315d667143e30be003555b0f45d4d921e512754078722a32f314db7eda76b05330841b53920f9733a6fec4d63f22330b26175f491dec9c

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrpW:TCjsIOtEvwDpj5HE/OUHnSMK

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-21_8ee06708a2db40e643e36c7133463ec6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_8ee06708a2db40e643e36c7133463ec6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2532
    • 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:1776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    e94a90239525154421d6a858ef659582

    SHA1

    e1f9fd10ff9998e10a5125b79113b5e8d4cf3865

    SHA256

    4b4d0b488e54b03a7684dfbb58b64cedab41491e7f33b1b0a06ba9c9d78473a1

    SHA512

    1074293ff8a946702b9377acd027fd105cc413724c5d72448e5dfc5de84faa140e170fffdb8ee0475b859c744c184f3a91fe7a1863579ca0224ef51900b53515

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1776-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1776-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/1776-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1776-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2532-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2532-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2532-2-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/2532-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2532-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB