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Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/01/2024, 08:27

General

  • Target

    2024-01-24_559168c55b1caee890e6c3651e5ea52f_cryptolocker.exe

  • Size

    77KB

  • MD5

    559168c55b1caee890e6c3651e5ea52f

  • SHA1

    14cc1898444e5fc642b813c4a717f7d58d25168a

  • SHA256

    32d1d2527dc63ab439339de4492aace4c6efb0f93b79f13d03c495f332e74b64

  • SHA512

    116a9b0ed71b32ccedf714aa6f0b2f85a2a252d4ad1ce570c9ed2bed402ba62415e02d620a36f64fa6a58edf5b88afbe9c077e89c7d63394da81e289c93ea11c

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIufW:vCjsIOtEvwDpj5H9YvQd26

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\2024-01-24_559168c55b1caee890e6c3651e5ea52f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_559168c55b1caee890e6c3651e5ea52f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2276
    • 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:3988

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    58476b403bbb33ffbd118518ea1389fc

    SHA1

    fb89f308ff97b6fcfa8b69bd8eae2faa8e7f97e9

    SHA256

    604df7691fcef91abdabfe4445ea92c4a9739497ad6ff897099ec8a92bcd4bc8

    SHA512

    4b6b283a7007808fcf142d9f8587708c221adeef39f3268b7355e85f7aea06600cba9765721e6cc9d291c121ae339873d57d7a22a1466cdc14f59b568e4490df

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2276-0-0x0000000002310000-0x0000000002316000-memory.dmp

    Filesize

    24KB

  • memory/2276-1-0x0000000002310000-0x0000000002316000-memory.dmp

    Filesize

    24KB

  • memory/2276-2-0x0000000002220000-0x0000000002226000-memory.dmp

    Filesize

    24KB

  • memory/3988-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3988-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB