Analysis

  • max time kernel
    148s
  • max time network
    150s
  • 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 16:25

General

  • Target

    2024-06-05_92b286999dd4fcb92f19689f41a03076_cryptolocker.exe

  • Size

    71KB

  • MD5

    92b286999dd4fcb92f19689f41a03076

  • SHA1

    28441a31e91472681d8344b65f048b8e4626f9d7

  • SHA256

    f834e77e69eeb6b42c3c2c3f76c95be13df4f38af78697d57fa8424fdc464899

  • SHA512

    2d563ceb4352e80239cc9b3e96401b7f287b7abaadfe005f8b800c6b2cfbf4d9926210393fec87cd12299ae800ec78969a428ebc157a7781745d463e189d85e8

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Rq:vj+jsMQMOtEvwDpj5HZYTjipvF24C

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_92b286999dd4fcb92f19689f41a03076_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-05_92b286999dd4fcb92f19689f41a03076_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1080
    • 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:2536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    71KB

    MD5

    0484d92e6dc7fac64d82a6b9f5e19389

    SHA1

    9240b38c623284be156d22d15224c59a50dfccfa

    SHA256

    2d2720ebd3f4efc3179bec6ea5209b93c675db7e551fd419f704bea9a6adb667

    SHA512

    b01a6b8f21f913235ff34242a291e536b3414c0caf09159057d0e2a05a84c9c8c886a4837e59a8610fd32e47be85def2f3b34a1f0f66fa66b6fa89f2d26c0845

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1080-0-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1080-8-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1080-1-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/2536-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2536-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB