Analysis

  • max time kernel
    93s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2024, 02:39

General

  • Target

    2024-04-05_6790606b930097de346d9d764e95cf08_cryptolocker.exe

  • Size

    74KB

  • MD5

    6790606b930097de346d9d764e95cf08

  • SHA1

    f83568433482620ab907abe693142dcd4247ffe6

  • SHA256

    a2131978fd48fc67e73850d7a18aadae2c1fcc4e82e6f0f5df16d28f42f64e60

  • SHA512

    ed535c1e9e45c1005e40e36c1ba5198c307ae0ed918932bd1ce5cd65dc9d8bd8cb3a9b4298b96eafef947234f0e1e5dc8f9d6515b5fda02a776d3a255eb03003

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRXrZSUwN8yb:xj+VGMOtEvwDpjubwQEI8U48yb

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-05_6790606b930097de346d9d764e95cf08_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-05_6790606b930097de346d9d764e95cf08_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:628
    • 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:1456

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          74KB

          MD5

          e3861c0dd6c6a1db1ba231563b995819

          SHA1

          af0c9884efa1ae1afc046eafd99cf2165c8507f5

          SHA256

          b7915d4853064593f04d211e96d8d02f8cda28f018f28a53415a75ea12f960fa

          SHA512

          1638313e0813d22c141f47e1704d0c312f92ae9179d369c4d8b1e9ef6c2f8d88b0b40c8ab6a0529b59c9007e0b9e2389333c83490dc4c7197ab11823868e45b7

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/628-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/628-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/628-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/628-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/628-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1456-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1456-20-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/1456-22-0x00000000004E0000-0x00000000004E6000-memory.dmp

          Filesize

          24KB

        • memory/1456-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB