Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 06:06

General

  • Target

    2024-03-05_b60b43fca58d20de7296cfcb4e1e625f_cryptolocker.exe

  • Size

    125KB

  • MD5

    b60b43fca58d20de7296cfcb4e1e625f

  • SHA1

    64263680b21e8c22b2701d502a77832a8ba09bfc

  • SHA256

    2e41cd9dea404cbbf8a818786dd26be79f22212488e2734368099553ce072d0f

  • SHA512

    f843432acb52e6a46366960befdbe90d1971a1c18050cf1d65dd64385621ae8f294a5475ffb153a55327440112d8dfa374269e88b2fef6c42b5ce5eb1e2a312b

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//V:vCjsIOtEvwDpj5H9YvQd2Rr

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-05_b60b43fca58d20de7296cfcb4e1e625f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_b60b43fca58d20de7296cfcb4e1e625f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3224
    • 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:1768

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          126KB

          MD5

          7ed10e1a39de9dcfb741ebe7499c7221

          SHA1

          8a85a64b519bcbf691d36d4a1429e682309965a6

          SHA256

          9755245ac87b09e573ce1f571fb7fdaef079eb9ab34d34793d9a63583161a539

          SHA512

          8d8094d144f410eedf81c6883fa6322b7f7f36e42090fda8cecaa35f54eb0c57947d010839d51b9c002fe40dcab36b4160db2faa1abe721bf8df3feab8d32a81

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/1768-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/1768-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/3224-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/3224-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/3224-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB