Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/05/2024, 04:26

General

  • Target

    2024-05-03_1fe1d9443deab95be4d6f8d605a7dcf7_cryptolocker.exe

  • Size

    68KB

  • MD5

    1fe1d9443deab95be4d6f8d605a7dcf7

  • SHA1

    5e67a554c585ecd545859aa0b07778be2feed1ca

  • SHA256

    56636aeaf29c67e291dfd0932a4e837d51df282067f8ff219f9dc69e47e95e6a

  • SHA512

    c4959c905a3d3b1c3b2d75ff0a7620bb86991f95790cbd0df613d9c4a35845a7d49845091926d40c4245f4b771fc23f9089348c69ff88a70286443fefb618683

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/ug:i5nkFGMOtEvwDpjNbwQEI8UZDGg

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-03_1fe1d9443deab95be4d6f8d605a7dcf7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-03_1fe1d9443deab95be4d6f8d605a7dcf7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4824
    • 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:2972

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          68KB

          MD5

          0a59b9e44fde4e312128c17df0f2f81c

          SHA1

          7e0a41c4d488889cad89beac6f4839ebaf2dab3c

          SHA256

          a762990b42c7570d80793135d9898b6b78d8cffbfd66f5a99584e5e3929cfc5c

          SHA512

          be0365cbefea8d7a0d526d8578f0506c8ab64e7ca31f14543b7eaea6f3d5c2cb25cc01fdd018394dd76d215a2e6d3e212e1015ddea8fe3f4600fda95693bddbd

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/2972-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/2972-21-0x00000000007E0000-0x00000000007E6000-memory.dmp

          Filesize

          24KB

        • memory/2972-49-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4824-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4824-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/4824-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/4824-9-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/4824-19-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB