Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 04:23

General

  • Target

    2024-05-14_0224ff12e526a1d75b04141e875c9474_cryptolocker.exe

  • Size

    70KB

  • MD5

    0224ff12e526a1d75b04141e875c9474

  • SHA1

    7d032b1908a6c7a4da3b0572c7bfc9de41448351

  • SHA256

    279ecf6e6c13fc17bf0b35020df942841c6e522a785daf29f00b177d393089ee

  • SHA512

    6ab436a9ae27a604e36f01eb500dcebc7fba3648600c2b35eec6a35535e27521e94d1fc7596fd44d45af5d6c90f1f861c18fe0608ff0255edaa03526c2d42cd1

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/RL:vj+jsMQMOtEvwDpj5HZYTjipvF24j

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\2024-05-14_0224ff12e526a1d75b04141e875c9474_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_0224ff12e526a1d75b04141e875c9474_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1844
    • 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:1300

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    70KB

    MD5

    690bd6214f0b2e0d08d56a5d71f0c4ce

    SHA1

    2634a64e31724e87348d4986debbcb1a7ba5c7ee

    SHA256

    b518be7e2255d1ac238d8ebc94afe3ef6f57e9c3f5f73972c667b5da4b903c58

    SHA512

    01820966997e25050fee971b51eb0678351fdc4b640da67f13066f71b765308fcf0941fba8d9fc705a4997754bef91cc33c02fb4b6a5c8fb804ecd4fb101889f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1300-17-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/1300-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/1844-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1844-7-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1844-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB