Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-04-2024 18:04

General

  • Target

    2024-04-27_4206154e3997f2c26b810ada1d398ece_cryptolocker.exe

  • Size

    82KB

  • MD5

    4206154e3997f2c26b810ada1d398ece

  • SHA1

    2fa2f8a5891b1a30be30e4c41cbfdbff51f1b070

  • SHA256

    c58c086797767ab9642474f7319e41a1341bbd080505483633c8642c2c3db1e3

  • SHA512

    93a859c8f06caa68b6974d743fe687880c1c149d4248b45e81cc04df71fecbfa231113e9ed983ddd9112582fdc507665d2436cdcf95c65a76dd00a90eecdb849

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrhx:TCjsIOtEvwDpj5HE/OUHnSMd

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-27_4206154e3997f2c26b810ada1d398ece_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-27_4206154e3997f2c26b810ada1d398ece_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5008
    • 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:3188

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    82KB

    MD5

    1fc310ff1007d1fe6fc3ef973328e985

    SHA1

    3b6113fecc21e98c541ecfac399feabeb5c3f239

    SHA256

    bf051f3edc970045d1c350d3c1fbf1469abb3b73496011d11a2ba559f7933d67

    SHA512

    7aafc61f0bb3e7c3955d6f76a9b98e40f8fd5e74ee62076c8f64a2520bdc11d85efa1a84b32daa7412ed013f1c878b2218263abdb6afff01c66a5025739ec219

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3188-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3188-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3188-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/5008-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/5008-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5008-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/5008-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/5008-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB