Analysis

  • max time kernel
    140s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-06-2024 11:24

General

  • Target

    2024-06-20_38c2796ddbc4d2a63e66bf6e8e14d6f6_cryptolocker.exe

  • Size

    38KB

  • MD5

    38c2796ddbc4d2a63e66bf6e8e14d6f6

  • SHA1

    f83360ab89257c3840386de57377036db3666c2a

  • SHA256

    6b4e14c94eee0e17238c143daafc7fe8774a28a63998490aa31eebbbc432bc86

  • SHA512

    12ec4c6af320dfaa823b9d40d159d074d0a8a036d4b18108301cede2d534f242bf0ed864d153447da9fd59e573d66edc21eb09e583b09791f2f1536f0cc86dbb

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4XYNS:fT+hsMQMOtEvwDpjoIHIM

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-20_38c2796ddbc4d2a63e66bf6e8e14d6f6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-20_38c2796ddbc4d2a63e66bf6e8e14d6f6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:928
    • 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:4148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    592a1c7c6ffb8e82c9937ab3b4c73486

    SHA1

    c921639cc83609e31312f86e132bb21a29d14655

    SHA256

    87e25fef205fb62c8fc13fabe1a6ca6f91983838e5ed674a27c371f44a557858

    SHA512

    4e1922198559f82bb470513724a03dc0c996c32660c38f8f68814ef2e5b3789ffd0fd8122de9442d8dcfcf418882d4f48a411bc5131d37b0c57cd8e9ae00f8fc

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/928-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/928-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/928-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/4148-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4148-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB