Analysis

  • max time kernel
    144s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/01/2024, 05:45

General

  • Target

    2024-01-10_03d2efc4bd963cb322e5d1b5c3f1f397_cryptolocker.exe

  • Size

    59KB

  • MD5

    03d2efc4bd963cb322e5d1b5c3f1f397

  • SHA1

    569b4df2697ec1cd8938fb91033c9533227d79fa

  • SHA256

    205386526e0a977693f968a24ee461d2fe3d11cb025d074c8db092dafcf2f681

  • SHA512

    2450469c66c34c8ae477108c159c85c79e6ab0c64f3f20f22e9aaa3f4791fbde469dcf8acc09bbbbe3baec53237995e6f6b36114b76f828f0342ed33bec821dd

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCY8EQMjpi/Wpi3B3URiLnuoUwUsfqB1u:vj+jsMQMOtEvwDpj5Hy7B3gG8xzUb

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\2024-01-10_03d2efc4bd963cb322e5d1b5c3f1f397_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-10_03d2efc4bd963cb322e5d1b5c3f1f397_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1624
    • 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:1164

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    59KB

    MD5

    379aba032b8f407a95b1a16211aa7337

    SHA1

    f91562a85b56e4c8631374390745f255a98f3203

    SHA256

    c8cf1c47ad165d950f4399b7e4facaa7fc84dd11b955f09a07987530d75ceb2f

    SHA512

    c8913cc90480c2e057d5ee2acd1981f704952e3f5cb879555b543f3fb0676ea7273a17812b9196ea20c6961a2d133325a0201b09323ea95987c56351851ae501

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1164-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1164-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1624-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1624-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1624-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB