Analysis

  • max time kernel
    137s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 07:25

General

  • Target

    2024-02-13_0e32596702024a024ada4a822ef54032_cryptolocker.exe

  • Size

    93KB

  • MD5

    0e32596702024a024ada4a822ef54032

  • SHA1

    688feff652e531e1e909ecd52bb317dfc9c473ea

  • SHA256

    cf9953ea663efa76cac8def49bb85cf40a7a227864b06470034351d6070649df

  • SHA512

    1cc8103ff46087276012be9d8bde332094ccae8ff676ee35ea07b04c4f01768d711f256676ee6a6f52a4105fec35fbfe5141e2fd8dc5302992d291184d786ab2

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlC:xj+VGMOtEvwDpjubwQEIiVmkxC

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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\2024-02-13_0e32596702024a024ada4a822ef54032_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_0e32596702024a024ada4a822ef54032_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:760
    • 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:4284

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          93KB

          MD5

          4e0f1c691437635a7a3a82e6b6c243ce

          SHA1

          8a51288cc713c39bd886c1d807f5a6aa477eaa64

          SHA256

          fd962b023a68f7bb4f640b4d141555a500ba8b5da79a91683c912b98b808c893

          SHA512

          b4d8a103ecb89f4653e1dcc9dfae055781b537e284e33c8625dfbcc96bb0bbd586a1d3f21326b2c70daec29c5f7b2e178d2fa8eb2b424aeec1f03c78ce6431b9

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/760-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/760-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/760-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/760-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/760-20-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4284-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4284-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4284-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

          Filesize

          24KB

        • memory/4284-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB