Analysis

  • max time kernel
    136s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-05-2024 00:54

General

  • Target

    2024-05-10_f52db777c3b4bcda8995ea43d2819dbb_cryptolocker.exe

  • Size

    68KB

  • MD5

    f52db777c3b4bcda8995ea43d2819dbb

  • SHA1

    e877d6349f7b2d6f4256ba4b4d6846b5021af711

  • SHA256

    52874fda39dee82f9a4e767627a016553044ee525da407b2afef98d9047c29e3

  • SHA512

    3bb0446f8af677992bd0d6f7eeaa3494b864f30fc02d44e5f99571e01ab87619818e49b580d348f226d048cb996f2533a001930575a8d7edacafd88fa7a24e3f

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/d/:i5nkFGMOtEvwDpjNbwQEI8UZDl

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\2024-05-10_f52db777c3b4bcda8995ea43d2819dbb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_f52db777c3b4bcda8995ea43d2819dbb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:384
    • 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:4052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    a131a6227a24d8108aff86bc82e00bc3

    SHA1

    05473e29fa11669572af029f86574a870dcb20ba

    SHA256

    0380854ca1532816f804f03cc3e672f5b3798e85e818b75afeeffe18e14f6d9d

    SHA512

    48afed0f5484588cd0250144c3ff9aa3c487dbdfb31aa43b857c680f5a6f5b5f222dd88691d8037ad78d00c38deb4c9062b6ae2c6c146a25797a30b8e5ad7aae

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/384-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/384-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/384-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/384-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/384-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4052-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4052-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4052-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4052-50-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB