Analysis

  • max time kernel
    87s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-02-2024 12:53

General

  • Target

    2024-02-13_7de7d4f4e02d2c490f35c957b2f1de5a_cryptolocker.exe

  • Size

    39KB

  • MD5

    7de7d4f4e02d2c490f35c957b2f1de5a

  • SHA1

    bf4dc6fa85ab719f321533d029663a3d910d825b

  • SHA256

    684784150fdd86a9b746840fb18dbbb393a709df3432d5c930883adc1799dd17

  • SHA512

    999d3a812873cc93bf3c54a321c00e5d91e24c7458f2ccd9e6dd133bfa563029f5e26ff44fed7110359df12b269259433fb4c5c779990597e43cb0c4a7a66407

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenQLmWh5:ZzFbxmLPWQMOtEvwDpjLeUHv

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\2024-02-13_7de7d4f4e02d2c490f35c957b2f1de5a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_7de7d4f4e02d2c490f35c957b2f1de5a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:904
    • 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:1368

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    e906c3d18277251977477bc8fc538db4

    SHA1

    d27da23398b526342c65962682f02443fbe56f5d

    SHA256

    092ecee414e9a25d42ed6557c60539cfe7be8e2aa38f5405a9e2c6e4e5821b6c

    SHA512

    d9fb88b3799bbb86610d81562729a18e26705cdb40fc106f7af4596d202b9faacfe1b76bfdd9eb85bd077930287effec702925459e383268a93568a9e23b4704

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/904-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/904-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/904-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/904-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/904-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/1368-18-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/1368-20-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/1368-23-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB