Analysis

  • max time kernel
    129s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 00:59

General

  • Target

    2024-05-07_d1e2d9225625f5632b2719dd2ba89a45_cryptolocker.exe

  • Size

    70KB

  • MD5

    d1e2d9225625f5632b2719dd2ba89a45

  • SHA1

    3e12487b2548a44c07dae418e3e61b538ea56467

  • SHA256

    3cc3ffd48d0f6fd394c1be7b52f163758e86787be6e3edc9374369edd0681c41

  • SHA512

    604e0e141dcc8d28219044373262c370f045087ccc5d29a471bc9a81b1487f6166b97135481b4f227697b170fe3e7c34cfda30a8d3b6eba7d6a8f1a78f1a90ea

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Re:vj+jsMQMOtEvwDpj5HZYTjipvF24G

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\2024-05-07_d1e2d9225625f5632b2719dd2ba89a45_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-07_d1e2d9225625f5632b2719dd2ba89a45_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1320
    • 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:676

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          70KB

          MD5

          9b8665f6b8108bdf7dc7095162755633

          SHA1

          bb8a4c4fa23cb2206705c342029ddd8a8212c271

          SHA256

          377fa0464d0e06df0f84b6bb60f56c1f717201d59cc90768b2d4455ca5a6ecc9

          SHA512

          8be429aef4e68117c4cae0eaf357eaae75953e56ba6e8f33bb2864e147f2d14d5dc7b820abd66f06d0e4646828cb819f419c57e6ee27b3fbf255ce59105d77d9

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/676-17-0x0000000000860000-0x0000000000866000-memory.dmp

          Filesize

          24KB

        • memory/1320-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/1320-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/1320-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB