Analysis

  • max time kernel
    144s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-01-2024 05:55

General

  • Target

    2024-01-10_b08adfa19405ebe4f9fb225a05f939b9_cryptolocker.exe

  • Size

    39KB

  • MD5

    b08adfa19405ebe4f9fb225a05f939b9

  • SHA1

    5eb64450e2646c5d46f14c0602e2a4191f21cedb

  • SHA256

    95fc3c43f680090863d0e47bb95cc8b2ad9c30e4a40ff66e1eb86256d488930b

  • SHA512

    4b84adb8bfed05eadfb12c0aec75d5c3f68d29422656c44096972323fe81c6b67aa668f29f2b78aa610b0770d1efdd5b71958178c478551860f97b509e8f5100

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvP7DMYaF5:m5nkFNMOtEvwDpjG8hP7DMB5

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\2024-01-10_b08adfa19405ebe4f9fb225a05f939b9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-10_b08adfa19405ebe4f9fb225a05f939b9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2712
    • 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:4832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    3393d8b6a78a27e9089f9e30bee213fe

    SHA1

    a28a34bf24bde607a27ac5cce66950e95fa42d26

    SHA256

    0e4d620951123efc5338bc32f20099c47d55667fb3dab96d6618924570ee98eb

    SHA512

    162779ed6ad959d0fb0a9b794c9f3eef52e333cb6c6078277fd1fb643eb68d5857a84ffee532631913784d81965a75f3f9364b568b8709b879f4939aa80d372f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2712-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2712-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2712-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2712-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/2712-25-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4832-18-0x0000000000820000-0x0000000000826000-memory.dmp

    Filesize

    24KB

  • memory/4832-23-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4832-34-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB