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Analysis

  • max time kernel
    121s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/04/2024, 10:03

General

  • Target

    2024-04-28_414775d3c0a2925cfdb89f3ad4470084_cryptolocker.exe

  • Size

    84KB

  • MD5

    414775d3c0a2925cfdb89f3ad4470084

  • SHA1

    48477b0e5b07d270af887da8a7d49de6504e8681

  • SHA256

    d54ff6e45d6ef459d5ad21e51e5c57987b754b903a809339a62112747652e150

  • SHA512

    f29feef9b6680eddb737f6f5d4cd230eb8fcc98bb6005b563b22574e0ca7adfad71206fbd3ab83468c7374a6f5e2a5a9e9fcd3bcdbbb28a2957950f373387d0c

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBmt:vCjsIOtEvwDpj5H9YvQd2I

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\2024-04-28_414775d3c0a2925cfdb89f3ad4470084_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_414775d3c0a2925cfdb89f3ad4470084_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4008
    • 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:3324

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    1885101c97a8555cd8e7d2ba1fad03f5

    SHA1

    26d35dec7d7b4466f694a4eea722c16215ed60bc

    SHA256

    13d92a57a980298ff311f9e14cc7d5e196b43dc4306df1ce1149169cc9ad456b

    SHA512

    9f1dbdc152f758ee6be33f28c72550308c40a5c5641946b104dcf14d3fb7084518e925c8f5636f87738c208982c79e98a183be369911f50529f63e3f3c1050a1

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3324-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3324-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4008-0-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/4008-1-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/4008-8-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB