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Analysis

  • max time kernel
    149s
  • 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
    09/06/2024, 11:25

General

  • Target

    2024-06-09_08e20ac34b27b8e2c7d663262f625c00_cryptolocker.exe

  • Size

    87KB

  • MD5

    08e20ac34b27b8e2c7d663262f625c00

  • SHA1

    c75b5f5cb7393aabc3d3e3accb0fb4972083abb2

  • SHA256

    372bde159667cf84651fce67dd80f903796b11282e8f61492bc4460aab85a14d

  • SHA512

    7db6513f6f15e2aae8de8bafacdccb39595f655440792ef08c8a48449090b7d7b1f145a80076ce3fe90b2dbe072268c0188e151400a5ec7f6165ad15e8cae76d

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBl0:vCjsIOtEvwDpj5H9YvQd2C

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 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-09_08e20ac34b27b8e2c7d663262f625c00_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_08e20ac34b27b8e2c7d663262f625c00_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2864
    • 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:4584

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    87KB

    MD5

    e1391b4c4c49749084cfbb21685e4bb6

    SHA1

    2bc7a9257e0ad87f701f005e2c3f7e64420d3827

    SHA256

    7f599ff6234505d536b17dc66fbe8e4c9c591fb81c4a10a002d45b4acb8e3a1c

    SHA512

    21db4796b695957ae59437c3004c723e00801c061cc5c85a8925205128619aed1f715063f0dbbd63a939711aeb469809141fa475d8119d112c7843538ef4936b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2864-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2864-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2864-7-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4584-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4584-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB