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Analysis

  • max time kernel
    94s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/06/2024, 21:02

General

  • Target

    2024-06-08_94f71569778e5ed9436d398d747599f2_cryptolocker.exe

  • Size

    41KB

  • MD5

    94f71569778e5ed9436d398d747599f2

  • SHA1

    527edce7684f46e416bd03c8e68e406b078774b8

  • SHA256

    d11fdd591320002a53c3206cf3512c27a6f570cb2996fd6caaa97197880e0ba5

  • SHA512

    882e39165ba918b4805a1a2d72ae41ca329512b3a864b6eb53af9687c2ee0bf6095d15015e6ca8b860be3f5f560d009479628bb6353e50d5742d73bb370f4630

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDkxP:ZzFbxmLPWQMOtEvwDpjLeJAsKcAP

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-06-08_94f71569778e5ed9436d398d747599f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-08_94f71569778e5ed9436d398d747599f2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3636
    • 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:2668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    891a83f7cdec1bc4979358662faa2f9a

    SHA1

    47e368c566c16554ff604677bcad9738004a5f7d

    SHA256

    ffbd9316e4e36ee92c3bcaccf4b36246712bf7365d6d287b9469955c2171c502

    SHA512

    c71c5eed26f4f381cecaad2ac8a2a190fe8ef1cadc1fec1e03fcfa3ccbb9766c8837cb1b34e8ca8806e1d4ee20fa0938c0bbfb1e931f29e1f2b1ac8f6f0e097e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2668-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2668-19-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/2668-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3636-0-0x00000000004A0000-0x00000000004A3000-memory.dmp

    Filesize

    12KB

  • memory/3636-9-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/3636-2-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/3636-17-0x00000000004A0000-0x00000000004A3000-memory.dmp

    Filesize

    12KB

  • memory/3636-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB