Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/05/2024, 04:44

General

  • Target

    2024-05-30_9b58b575e1f3a3c5b19f1658128a1235_cryptolocker.exe

  • Size

    78KB

  • MD5

    9b58b575e1f3a3c5b19f1658128a1235

  • SHA1

    f0cb33010eaf7dc9512ec817c916910668d45650

  • SHA256

    a0667797f8bacd6588635d8955aef3fd4d1faeb9d3428bb935e97e2df409451e

  • SHA512

    a2cfdc7e10eb5d4432ee18bfed95336dc5d9ea4edb864669d659f3b65d9bcd7ef8ce72870f038d8b9e5b17c75c41b195ab7a993946254601b29ece021fc6a2dc

  • SSDEEP

    1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KUY9:ZVxkGOtEvwDpjca6

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\2024-05-30_9b58b575e1f3a3c5b19f1658128a1235_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_9b58b575e1f3a3c5b19f1658128a1235_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4440
    • 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:1652

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    dcb497bc429cb73d4e8e4ddeed3848dd

    SHA1

    18f1f094a4c73e4ce6f513379613b5b3507e994f

    SHA256

    5882ef7b86d3a8103e7f7f7e1c3f9bd1ed0700ef6b4b1d200aaa9f7c2d088d35

    SHA512

    82cb5954ada3e619925e1cfb3c5307155f2303ce3e0eca89ab10b6c635b8e10ab9a8c81b77cba8641477a72e2ee139483a0101fede6503d6e7e0ae1f89c4f9f9

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1652-17-0x0000000000460000-0x0000000000470000-memory.dmp

    Filesize

    64KB

  • memory/1652-19-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1652-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4440-0-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4440-3-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/4440-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4440-1-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB