Analysis

  • max time kernel
    141s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2024, 01:28

General

  • Target

    2024-02-03_96a15de68834cfaeb5d2237fe088f0fa_cryptolocker.exe

  • Size

    74KB

  • MD5

    96a15de68834cfaeb5d2237fe088f0fa

  • SHA1

    60055ebae641caad388dd40207d65d4c3c5c1b6b

  • SHA256

    f77a42d7cabaa39a4497fdbd07d4de261f4282a2e94a9c866fc4f5d9d02a58c2

  • SHA512

    9b4df45abe631101f7cff3c8b8cb6bac90a9868c47b73224de479db85d140e0b93fd7739f6766a4afea94129c2f6cf3f3b70177f63f8b6566cfdaf66844baa0c

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3Ku7:ZVxkGOtEvwDpjcaf

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-02-03_96a15de68834cfaeb5d2237fe088f0fa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-03_96a15de68834cfaeb5d2237fe088f0fa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4856
    • 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:4992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    74KB

    MD5

    5b590558b764b36f2e4adbf5401b0067

    SHA1

    871a71bde86ba92d62368024b3329e2fea8393ef

    SHA256

    0d6e9744b45109027d33bbc4f2bba607cf2776007b21720d5e82f236bf13e836

    SHA512

    94e9d49ecfea9218ca5c360fe187353dcd096172a18e29fd870876240f563b36d41b3eb5e39252700b3abba2418c992c773122a80171eb3d181a41dfcf3bbe7a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4856-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4856-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

  • memory/4856-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

    Filesize

    24KB

  • memory/4856-3-0x0000000000810000-0x0000000000816000-memory.dmp

    Filesize

    24KB

  • memory/4856-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4992-19-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/4992-22-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB