Analysis

  • max time kernel
    147s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-04-2024 05:07

General

  • Target

    2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe

  • Size

    60KB

  • MD5

    f355bd5963b8f63dcf62c2671bef1316

  • SHA1

    9897542257e152d8be34812e9c7cda32ad882cff

  • SHA256

    c3f8a9edcc8005a4daf85290960b535bc6fbed225062adfd8b20e5cec40dacf7

  • SHA512

    544563f91343c609f8dd791dd5d59920b1b0b808de9ab4228779d564c3a24926e21e713e15c061ff4d77659e1601c92f7a93ed9e7bf4843ee7df01d027908575

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIM:TCjsIOtEvwDpj5HE/OUHnSMu

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-06_f355bd5963b8f63dcf62c2671bef1316_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3192
    • 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:3868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    61KB

    MD5

    e4fe5ec12e25df86c20786d7ba561448

    SHA1

    05ee381dce0099e8211bfe23bf43bc44cc460ee3

    SHA256

    92cad83c0231de663ab942ef06d424e3945225823b656f18667a6006700f5fd0

    SHA512

    6547e82f7e811c92872683c15a6ca66a7fae2d66c44c9dfc16868e3557634d4d7062a20a4722ce0e9246705ff226fc30a3307ae66665af59980c5844a7beabcf

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3192-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3192-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/3192-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/3192-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3192-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3868-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3868-20-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/3868-23-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/3868-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB