Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/06/2024, 03:38

General

  • Target

    2024-06-03_4cd61ee0947aa69865cf5c95887e97b4_cryptolocker.exe

  • Size

    39KB

  • MD5

    4cd61ee0947aa69865cf5c95887e97b4

  • SHA1

    14e1841b714855fc6da115c3dd9e7aa7f2792288

  • SHA256

    c07f5278689c27b01d3df85d2d41c83414905a721dc9c009dfa09e8bb3542f93

  • SHA512

    4ca0254699e8694c54e7ce143c2eed8b69f518d955579be5df8fda54d16c6ddd371f0e6dcc2841c4007fd4c860ae0400d009941ce0ce6ffec5698a4db768f37a

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4HZd:fT+hsMQMOtEvwDpjoIHj

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-03_4cd61ee0947aa69865cf5c95887e97b4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-03_4cd61ee0947aa69865cf5c95887e97b4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4268
    • 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:324

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          39KB

          MD5

          7a105840d2268fce4d1b70e775693304

          SHA1

          486c1bd6f654429f0da5962930cc609227651d76

          SHA256

          1f6fad113ecd0a163f3a6e9af4bb6168713fa05267d085248664ae34f5ecb5fe

          SHA512

          b2d303bea6fa9b51905083f8eebbda82e956d338014d9482de2668034a9b893d337560bd0bc551967d20d7609f5d9ba977c8355205ca21ce4ecc33fe47334665

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/324-17-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/324-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/4268-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/4268-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/4268-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB