Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2024 07:38

General

  • Target

    2024-11-21_98e34dd90537a87a81aa265ddc358411_cryptolocker.exe

  • Size

    72KB

  • MD5

    98e34dd90537a87a81aa265ddc358411

  • SHA1

    71c19664942e6a945830bbf206bf4962367b9336

  • SHA256

    988ac4995b5b205a837b2ec720d12e1a2929f1dbbc9a4405bfaa0dc54c0834a7

  • SHA512

    7f7df04d62ebaa17bd548bf359bffa550a3b0b46645b2cc359f884f7285ad2789f178433d2747656673c3ee076d93eb710efac093ab167722489b0d7f72137fc

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9h:C4Q2c94OtEvwDpj4H8zg

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-21_98e34dd90537a87a81aa265ddc358411_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-21_98e34dd90537a87a81aa265ddc358411_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4064
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:2372

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    1d89ea37bd71c35f750caf5626f72ac4

    SHA1

    62ea8b5a85b1aaa577b427cf39011a4dc18ab028

    SHA256

    a04c4ef962365d0d66952d831b0099fe13369010fcc5ef6216f52127bffa5eb4

    SHA512

    83edaa450981239634229a36e7effe2743f877f1c4085754bb055e38d57941ca942251164adbb266b64bb46d22277d1f2149bf4483f20b8545d532c740eae836

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2372-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2372-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2372-50-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4064-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4064-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4064-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4064-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4064-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB