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Analysis

  • max time kernel
    88s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 11:39

General

  • Target

    2024-02-14_32f47233e01d3c2ec8da0df554e433d5_cryptolocker.exe

  • Size

    79KB

  • MD5

    32f47233e01d3c2ec8da0df554e433d5

  • SHA1

    3e0f5efb755d17df061636caf1ab23f6d2009286

  • SHA256

    d0226d66df568f6dc21355206cad3a9fc7e38a510a0e8df86d2eace2bd6d3752

  • SHA512

    3f6f593d786e87d7663d254564aaa9241d5c4e31c6822e3a67d21753ad7dde97266f8b37940cebbb5ee9bf69ec16a72615e47e2abe74d792ac5826729d464051

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNxl:vCjsIOtEvwDpj5H9YvQd2N

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_32f47233e01d3c2ec8da0df554e433d5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_32f47233e01d3c2ec8da0df554e433d5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2172
    • 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:3032

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    79KB

    MD5

    20e70c9829b1dc617cc1978e6617c19e

    SHA1

    4f9a8ee35d69b1c28c41ffebc4ef70d0ea5b8a1a

    SHA256

    a369d7030cb0fdef238670bd47a59f06901636501d65578c40095f753ebcda35

    SHA512

    f920ce3cc57b0778f9c6e269340b518b93d803d860d6258369f03e9a389948d122361d66183df2e62760fa53dbae2f6ada28c1f69659b07601bdc1aac7778f29

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2172-0-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/2172-1-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/2172-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3032-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/3032-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB