Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-01-2024 12:13

General

  • Target

    2024-01-06_9b7e6c3ed8c38ad6f1f4b41771dcf09d_cryptolocker.exe

  • Size

    97KB

  • MD5

    9b7e6c3ed8c38ad6f1f4b41771dcf09d

  • SHA1

    c55a87f31f5806fd69d441e203bf535ad59ce122

  • SHA256

    753c42614c4fece5687caefda788ccb59d20a03d1b204fe9d5aa3c516368cc75

  • SHA512

    b3e1c4838f8cec43f189371724d23da9d21e5e64970b9a2f6e25078338166edda5cd9d44c034b1eb1d399034f6c7c3533f1003d47497704ae0b975e925415050

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNu:i5nkFGMOtEvwDpjNbwQEIikgNu

Score
7/10

Malware Config

Signatures

  • 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\2024-01-06_9b7e6c3ed8c38ad6f1f4b41771dcf09d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-06_9b7e6c3ed8c38ad6f1f4b41771dcf09d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:812
    • 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:2308

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    97KB

    MD5

    655578b3a70c181d71a6749d50d8de92

    SHA1

    592ac9a29f35fb9218598d44be147b33cfa51262

    SHA256

    855d132e781d3af564f0e010c31a7a06f033dc891ff7531855335d0232d58984

    SHA512

    2e4e2c7630b0f2ba419e0075610e13bf697e692da7d52c2532181fc0b554e7b361e570f115817d335c449c7283498c71cc3a8bfb4e9bb54fa2f2822a654a26b2

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/812-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/812-3-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/812-2-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/812-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/812-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/2308-25-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/2308-19-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/2308-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB