Analysis

  • max time kernel
    129s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 23:22

General

  • Target

    2024-05-22_12ad30272a89855e80d35067311d41b1_cryptolocker.exe

  • Size

    42KB

  • MD5

    12ad30272a89855e80d35067311d41b1

  • SHA1

    d31fa87948b1b5367d362eed9129449ddb941e26

  • SHA256

    f12acf07e225d4b1249649e3d594ddd82c18b41488a6386d08551ce4847c82e6

  • SHA512

    579dab22176ba67eb4ebe110424e946dbbb9549d9cc2ad59f190d8e3cf32a40ebce63d7d788d111e308930d157fcdb6a3e82d6f155ddf181747cff9a230aa6be

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNh8:i5nkFGMOtEvwDpjR+viHshNG

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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\2024-05-22_12ad30272a89855e80d35067311d41b1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_12ad30272a89855e80d35067311d41b1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4424
    • 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:3436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    4203dfa45bf23b178df622ea2b6285a9

    SHA1

    d4c087eda40b86bc34a2a9f054cb91601523e0c3

    SHA256

    931c1a4b93a0d6069dcdedd3defdd027ed369b75c4c9e115b563a7a789a56fa1

    SHA512

    3c0f053995c41e8430a473f0557a8df79dcff8ceb55f5596531f876f91764a6cabfe1de7719900eae63cadd98d6f58acd80a2f45649147451714e4303b496023

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3436-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3436-21-0x0000000001F80000-0x0000000001F86000-memory.dmp

    Filesize

    24KB

  • memory/3436-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3436-50-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4424-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4424-1-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/4424-9-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/4424-2-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/4424-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB