Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2024 03:45

General

  • Target

    2024-03-29_e46a4200ed64c154cf3fd82cbb38dce9_cryptolocker.exe

  • Size

    91KB

  • MD5

    e46a4200ed64c154cf3fd82cbb38dce9

  • SHA1

    3e21042ddc67b983244ebe3d917e801b429f9009

  • SHA256

    a1a2440e1544d04654c23bcde7b8e75ea244501b44963af2f1f26448eb999fb5

  • SHA512

    2b21d017cf71eded900788ec5c47f7a2a5a09636e59b6571d630b38f686447440a8512444ad111d145e86d02880c09755707adaa0ea3bbce483715c026b231ab

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQNmvz:vCjsIOtEvwDpj5H8zPse

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\2024-03-29_e46a4200ed64c154cf3fd82cbb38dce9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_e46a4200ed64c154cf3fd82cbb38dce9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2628
    • 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:464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    5282388439395b3a3b281c9b0d365bfa

    SHA1

    d65297659527d2298e6e6f11fc38cf886898d1f2

    SHA256

    56ea30f604fca1a9fa97e7e35e01e6812e6c70ea08fbe3fafff7eb67448a7380

    SHA512

    a1b06c83af97bac23224392ab3f386f7a7e4be30f5c1520f4cef8dc92cff01cee467b2727deba8f6f4e85293b550aaa1dea4d1b6fcd72b76bc852b5b35e35b7e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/464-17-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB

  • memory/464-20-0x0000000000490000-0x0000000000496000-memory.dmp

    Filesize

    24KB

  • memory/2628-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2628-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2628-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB