Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 22:01

General

  • Target

    2024-05-09_313daa68a68444ad7ad298995586807c_cryptolocker.exe

  • Size

    40KB

  • MD5

    313daa68a68444ad7ad298995586807c

  • SHA1

    1c9f17bffef4316513e1e11f53cf3d05176b7016

  • SHA256

    a8f3cb95fa8e9204310c7643cf4d8826d6fa6190d66b1904180b8baee646ae85

  • SHA512

    ff9b1cd48006cf057ca983677ed4bc202bf3578cab923dd7edccff9a022d62ff6b3214ac5822ba1e21303067273df2ae5f44a8c18888d2ca36098ab29fd96995

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuD+M:ZzFbxmLPWQMOtEvwDpjLeJAsKcR

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\2024-05-09_313daa68a68444ad7ad298995586807c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_313daa68a68444ad7ad298995586807c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2140
    • 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:4608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    b1f8ca81a9aa5e0ad19aac8bf7998672

    SHA1

    c641fce7d2517823de9dc5f07aaa1a549dfac057

    SHA256

    832c9184baef80a71c3afebe7e160d1ac253c3c693048f40f019a45110ef0c9e

    SHA512

    c6337047af4ddaf779bf5d8fc5007a1e2d72d440cc08df4ec32fb3321a329f5725f2a0978076640166bbc4aee8dd71c3fa7a2d27aa6621ba687a8b18571ce2cd

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2140-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/2140-1-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/2140-2-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/2140-9-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/2140-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4608-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4608-20-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/4608-26-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB