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Analysis

  • max time kernel
    94s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/06/2024, 03:31

General

  • Target

    2024-06-05_33ce0fb0947780f38a49ebb24fb6f1c5_cryptolocker.exe

  • Size

    91KB

  • MD5

    33ce0fb0947780f38a49ebb24fb6f1c5

  • SHA1

    ad9d69c7c5d26df5fae532b683ac5c369519d562

  • SHA256

    6e0e08f9b9f4f71918eecfda3a40c961044bea127beb56cdf7e039efe01eb9f3

  • SHA512

    51cdafceabed3b1df8f14539276b8fd6437eb88feb828f86bb29cdb8f389f215f977da8ec7c795309b86376588a491356b014edba243041795c0b9815eceebc1

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQoVr:vCjsIOtEvwDpj5H8zPsO

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\2024-06-05_33ce0fb0947780f38a49ebb24fb6f1c5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-05_33ce0fb0947780f38a49ebb24fb6f1c5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2956
    • 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:3592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    ec2338ff49c21f91225e170cba1d9c2e

    SHA1

    c760da043cc7a27116416fdfde7b8b78c374b3a6

    SHA256

    fe59aeb479db00e9e69033c7652da58997917b88ed2bf9494c311bfe2e7b8258

    SHA512

    aecf40c6d4943817262a970d4f1bd77709f619d94969a7722aea9620b1fb79bcb3877dadecada9e6cbf26994f85fd82b45fc58462b212d20241faf51ceb60d62

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2956-0-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2956-1-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2956-8-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3592-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3592-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB