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Analysis

  • max time kernel
    133s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/05/2024, 22:02

General

  • Target

    2024-05-25_e3acedaa04e0b94723b97323b060c3f2_cryptolocker.exe

  • Size

    66KB

  • MD5

    e3acedaa04e0b94723b97323b060c3f2

  • SHA1

    7ba633e60d636aa9e38a8f01e72fe29b7cedb56b

  • SHA256

    67f7bcdd4ef1a5ae94ff90e3906a9bf0d4b97248d6fe22e07cfc1e58b3c08586

  • SHA512

    9a69218ba5801045fc7e0a1cdc7919e7f83fce12f633e86b76bd793e075ff937e31916bc312672d2a70fa2249a80c0cfb3cba13a769bec56293cf354536e43ba

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGy7:TCjsIOtEvwDpj5HE/OUHnSMYK

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\2024-05-25_e3acedaa04e0b94723b97323b060c3f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_e3acedaa04e0b94723b97323b060c3f2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4496
    • 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:2720

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    66KB

    MD5

    f840f28bb381595e9e7b6a450e2280c7

    SHA1

    09821a8524d4ea4e591cabe80b7e0bf0e27a1007

    SHA256

    3239e63543512c8ce7d79d69a94ace38cb504803e860dc6ebf9e75a32fdfa734

    SHA512

    a395dc9cc948328760052824c9149e5799b56ca7ebc1b24fe4f2a8260285b59b068e7c76c81f63efb36c86d75b0601f103bdb3df62a9d394601f81659009c55c

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2720-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2720-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4496-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4496-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4496-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4496-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4496-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB