Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-01-2024 04:48

General

  • Target

    2024-01-24_cb6c7e4d1040a040385ca795604fb03a_cryptolocker.exe

  • Size

    45KB

  • MD5

    cb6c7e4d1040a040385ca795604fb03a

  • SHA1

    0e873c4b2041491544aac3809107bdf9d5957801

  • SHA256

    2bf258f59dbc3d9b63d0b3004d6d1b74ae9339623c38857c269820497054b76a

  • SHA512

    d2061b9dc48ee49c6098dd2fe7cac4f6ecf14804a2ba035d98231ab3e04d364d565e97016e2f29d485e5585499f3476524c9131eb2dafd33c16b0147024afabc

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1wsD:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ1t

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-01-24_cb6c7e4d1040a040385ca795604fb03a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_cb6c7e4d1040a040385ca795604fb03a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1472
    • 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:3936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    8e31203ad3c57a96c9a02c3ba82379ce

    SHA1

    6f3e05fcc9ded878a9edc0b578bb377fb56a73b9

    SHA256

    4878da245891e7307b7f143f1706804a0e885525181f97be3dae2930facda05f

    SHA512

    563a86ab1610421fd3e5036888d095191a91649d2b9932001364128334e465f716070c850db378ec3989c786e1f71761e1812cd8bc189c6784312edc8491757d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1472-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1472-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/1472-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/1472-3-0x0000000000890000-0x0000000000896000-memory.dmp

    Filesize

    24KB

  • memory/1472-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3936-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/3936-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3936-20-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB