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Analysis

  • max time kernel
    150s
  • 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
    20/05/2024, 22:21

General

  • Target

    2024-05-20_109232901363df5d363446c62b93f6dd_cryptolocker.exe

  • Size

    37KB

  • MD5

    109232901363df5d363446c62b93f6dd

  • SHA1

    ecb002cb680f785cdc690ad0e1a131cf4148fa58

  • SHA256

    2da89a8f2fdb4550977a7f8482a36f4f81bd1e8a9d3dc7a61a0e91241cf8d9c1

  • SHA512

    2e72b81133f612df864ba35bbd4a96a3fb7b0df68abf12511182e1a4f30941a8a4537cd00fcae77210da2992b9ae13b8be3de2341728e0eb52e338fb13c3e610

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+40dZ:fT+hsMQMOtEvwDpjoIHyZ

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-20_109232901363df5d363446c62b93f6dd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-20_109232901363df5d363446c62b93f6dd_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4900
    • 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:1296

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    6d4be697267269660ea0f79f5442115a

    SHA1

    94019f3cdcf9f0bbe074ff9826908baa25fba5b9

    SHA256

    7a54847123f61fe5bff13532973bf17124d52dbfbcea9c276ce43a05e9bf3974

    SHA512

    ed3211397148645cc1987983bbb8fee4db6f714c40a2f4fccde7bcb1adc29c9852ad726ae1e737cf8bbcde39e359451709ab122c39cede6983870dfd150484c8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1296-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4900-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4900-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4900-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB