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Analysis

  • max time kernel
    142s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2024, 05:42

General

  • Target

    2024-01-01_4e7daa4bc7877c23d209c2ec75331528_cryptolocker.exe

  • Size

    123KB

  • MD5

    4e7daa4bc7877c23d209c2ec75331528

  • SHA1

    5a54280e74d6bf34e07f307bc7b9135b6824e844

  • SHA256

    2cccf9de2ffa06fcb6407f94f5aaccf2b091b7e36aaae5c37c80d9ed8698ab58

  • SHA512

    4cb2efc794cad67e13aa46c1ae1b32755dacbd835768beab32648476b2818dd6bcd34e8e4219792e8eb35e56051c1b8d20320c306beedf8103b62c7a4f2619d4

  • SSDEEP

    768:gUQz7yVEhs9+4T/1bytOOtEvwDpjNbZ7uyA36S7MpxRIIXVe3mU9TYwlOBTzy:gUj+AIMOtEvwDpjNbwQEIPlemUhYjy

Score
7/10

Malware Config

Signatures

  • 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\2024-01-01_4e7daa4bc7877c23d209c2ec75331528_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-01_4e7daa4bc7877c23d209c2ec75331528_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5004
    • 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:692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    123KB

    MD5

    7eee5da7a8c915e18fe41ba02d62f42c

    SHA1

    3e649976fca12f373c0d1d9895b515cf37b34c10

    SHA256

    197618bab4bd5031ba04d3313f09345a692d8454e15ac25f89ff84921343529b

    SHA512

    751ebaeadb7188ced6f722f75c3437e24556ff0506b8e6c3012bd74e09fe936245fbbc12c9b0ea323894478f23ca91030e8e35e1f3a5f2fb0dfcad4b50a0f4b1

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/692-17-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/692-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/5004-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/5004-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/5004-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB