Analysis

  • max time kernel
    140s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 02:50

General

  • Target

    2024-05-22_c7c1b2cdeeb12d492764977c59076e43_cryptolocker.exe

  • Size

    86KB

  • MD5

    c7c1b2cdeeb12d492764977c59076e43

  • SHA1

    2ac3336dd79c563ff6b1d6020816320b991dd977

  • SHA256

    377239cc0545df11ca695319116493b8e629b140a4d3200c011411013e36940e

  • SHA512

    a25ef4e5550ee3b8b6a56bb9d9a216a2f4192eaddcdd16ca9b3650d47e106d0e022375909dad15cd55130f38d835002c11a8d81edf0c401f0ee66bd1c930dff6

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBdj:vCjsIOtEvwDpj5H9YvQd25

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\2024-05-22_c7c1b2cdeeb12d492764977c59076e43_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_c7c1b2cdeeb12d492764977c59076e43_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3024
    • 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:1096

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    22ebfc065ef36fc51e3f4168c526ee20

    SHA1

    dfdf0bf60ef39ecea8957565f22670e13479a363

    SHA256

    1adc96dba29b0dbaff21e9efc140cedef4d1a08d408b6807e0ddbad7067abbe2

    SHA512

    9f0a60f8af864c3bf2e23f38d096d5f79b5ccc32cc03476a1a36d00f3a17a76831b7c6564425d89c35efd10870503272b21d493d39fb9ef65beae72ac706c587

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1096-17-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/1096-23-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/3024-1-0x0000000002000000-0x0000000002006000-memory.dmp

    Filesize

    24KB

  • memory/3024-8-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/3024-0-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB