Analysis

  • max time kernel
    149s
  • max time network
    152s
  • 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 18:09

General

  • Target

    2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe

  • Size

    42KB

  • MD5

    de50744b124b83174bf9557514466e35

  • SHA1

    b6924ea25c711d80b480310239cf28ccd69a848f

  • SHA256

    62fd665d85881a8fdaac540aeea7097d77e9addb9e185e7024bae44022f86232

  • SHA512

    c46c31a2eaa088fc823426b4c60f088a472f1175647c21d72e94eac8948470a6d2663f296a338ba2dd788c4d2f732605421f3b6b4033008df441d83203d8ce35

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhJ:i5nkFGMOtEvwDpjR+viHshNP

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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_de50744b124b83174bf9557514466e35_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_de50744b124b83174bf9557514466e35_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2188
    • 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:2976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    af08a3cb93bb49aa2f18b0d63bdb4b8b

    SHA1

    1554f5c826d85ed97697ac7fac61e968210084e6

    SHA256

    25b6e58c94ff553971682d39ed9899aad5f39b77e78cc9ab050a51fb934d2286

    SHA512

    4cc23f19b321357cec027b8c51e26cb51e8406846a57aef36adf4ac31098929a92339dd33e2622bb18fe71f732ab56da499b80b2fe18c5a7beae625ab8beeee7

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2188-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2188-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2188-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2188-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2188-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2976-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2976-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2976-27-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2976-32-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB