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Analysis

  • max time kernel
    130s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 03:54

General

  • Target

    2024-05-14_6b9ba223e07c4e65d30059777831cf1e_cryptolocker.exe

  • Size

    37KB

  • MD5

    6b9ba223e07c4e65d30059777831cf1e

  • SHA1

    5ff396f027f8db43f2e3ecfb83f3df1603e24a8c

  • SHA256

    9fe82e7e5d55ced7c3285d2cfc6e191e7f36c60d378345419bcaefafceb4bb15

  • SHA512

    abaf7d9743d5e4f70e91460e7228097da8584a45faed5014c18e0044e0568aaa8602a2140f7d7388b32ff8acd36584671c357fc170c5cbedde097a23efa32a3a

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4v:fT+hsMQMOtEvwDpjoIHv

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\2024-05-14_6b9ba223e07c4e65d30059777831cf1e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_6b9ba223e07c4e65d30059777831cf1e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3556
    • 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:3140

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    f999dd36609b0cbe9e94975b9518f446

    SHA1

    4bc9c0a831842d29644c8d1dfdc6b8a0fe442abf

    SHA256

    de8095dd8a62cf9a528bfbc68f3da9794434220bde0006495540df149db9bc60

    SHA512

    269f9782772341651126ed8f52271a08f7ce72347eb84723664e94fa3007ef61a7149d4144107d0dbcf47719a5d7e69538a4bfddeaa7c7bfdd7c36e50f0d0ac3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3140-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3140-17-0x0000000000870000-0x0000000000876000-memory.dmp

    Filesize

    24KB

  • memory/3556-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3556-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/3556-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB