Analysis

  • max time kernel
    166s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 12:45

General

  • Target

    2024-02-14_2afee220e98caaeeabe39f8038f690e6_cryptolocker.exe

  • Size

    84KB

  • MD5

    2afee220e98caaeeabe39f8038f690e6

  • SHA1

    6fa5cb1851b724dd7fc57a84a6d5327d4a9ad3b1

  • SHA256

    4353da962977e74c5274b543c20e490833736b94643de5b7191cbef4adf5a05c

  • SHA512

    dffd6b37bc9b1410516d6a0fe59b4253dd98bb2319746a4e61004e1ec1505060f4bf4db879e1602c9b21ebe3e1f458c9a3f298c3b32e179c1ca65f8cbf36dc03

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUv0:i5nkFGMOtEvwDpjNbwQEI8UtzNcO80

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-02-14_2afee220e98caaeeabe39f8038f690e6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_2afee220e98caaeeabe39f8038f690e6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2956
    • 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:3884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    84KB

    MD5

    ef410c97e7f9edcf2474b4e2debf74fd

    SHA1

    4e5814c403665afe9b13ca8b3e0a5b088f58d19b

    SHA256

    ff460d1d67df83413660b14575d4df5e7528023ec109ca20301b6061af75efc3

    SHA512

    ef6af77c5a6acf67fe4f6b55321f86dfd1bda99d2d9308298a6e6b7a477b4a916abfcbb7ed90625466095aaf9c85f3ecc553a655379593b9826f51452073285a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2956-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2956-1-0x0000000002300000-0x0000000002306000-memory.dmp

    Filesize

    24KB

  • memory/2956-2-0x0000000002300000-0x0000000002306000-memory.dmp

    Filesize

    24KB

  • memory/2956-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

    Filesize

    24KB

  • memory/2956-10-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3884-20-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/3884-22-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3884-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB