Analysis

  • max time kernel
    88s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/01/2024, 08:28

General

  • Target

    2024-01-25_52d8186ae7c399bbaf42169898092629_cryptolocker.exe

  • Size

    78KB

  • MD5

    52d8186ae7c399bbaf42169898092629

  • SHA1

    8bdc8bda668e06eb7023e20cebcdf49b3f7d0f62

  • SHA256

    c59a27fd4713dd90ce9591eea5a70cd67db339c494e9c6ee833d2438feac4f17

  • SHA512

    2f427a0e0f219bfb047231ad5c5ebd5aa5a9cd1ae568b0f74d5158419af54057fb5e974e8afd507920f4651c490a47646f6caf9bd23914b469064b994516b670

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHFp:vCjsIOtEvwDpj5H9YvQd2/

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\2024-01-25_52d8186ae7c399bbaf42169898092629_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_52d8186ae7c399bbaf42169898092629_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1248
    • 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:3712

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          78KB

          MD5

          15a8602589cb761ddaff59ea9cc1414c

          SHA1

          7ee0235c0feb320abd4bc46837352211c7b82bba

          SHA256

          6e7b5e9a228908e355a782a381641cb6aae49b0698754728871524beb8fbe4e9

          SHA512

          42bac1c0f6eeaa22fea571fcc20dafc67b41e9876d9158c358833011ce7afd08bb9b04b068998e2199fb2bf43cb3dc1a66bf892441c027781d081099c8e7b78d

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1248-0-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1248-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1248-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

          Filesize

          24KB

        • memory/3712-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/3712-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB