Analysis

  • max time kernel
    134s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-05-2024 07:23

General

  • Target

    2024-05-08_297ba647f4ff16e5b9691f64ac6f6533_cryptolocker.exe

  • Size

    41KB

  • MD5

    297ba647f4ff16e5b9691f64ac6f6533

  • SHA1

    5a815c0db69942446ce90344d172838345885086

  • SHA256

    a80b361382e56e89b6a84c01ad144ffe3a10afdaa201a4b760f4971cc971f447

  • SHA512

    83f16fad9d7c64ec7885e018a316e3c79421241763b218d6e0f7deeabb257bec237f2b6023788959cd2da0343d141a72e6fa7ff014b9ae0957b005182d2f4c7f

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsZRf:i5nkFGMOtEvwDpjR+viHsn

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-08_297ba647f4ff16e5b9691f64ac6f6533_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-08_297ba647f4ff16e5b9691f64ac6f6533_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1980
    • 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:2324

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    17474f3efb58eb02aac2b1b011efcb8e

    SHA1

    b4f87c334afe5f70ca66804a8ce8330aa18a1592

    SHA256

    0e9a6e1030e7612d1df246b2c6981c323cdd5469d37d64748c184829e3fc976c

    SHA512

    68c69667e88c436ce9a1837a86ede95ee25b58b7af45caf688a47bf66fc4e226362b2890c6b7a77aa3c7d9f1dd3dd2c9f1cfd3b8afa4b85b7d06e323458a6b9f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1980-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1980-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1980-2-0x0000000002090000-0x0000000002096000-memory.dmp

    Filesize

    24KB

  • memory/1980-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1980-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2324-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2324-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2324-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB