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Analysis

  • max time kernel
    135s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/06/2024, 16:54

General

  • Target

    2024-06-04_2188ca82dba1154bddc92550bfbe0995_cryptolocker.exe

  • Size

    50KB

  • MD5

    2188ca82dba1154bddc92550bfbe0995

  • SHA1

    babb78165edd0e78cd437db6f7e44879f771f0d2

  • SHA256

    10593242349478280ed240e160cb7333c5f27b4b801a962aea95a8fb4fcac0de

  • SHA512

    483813ed03a7f998f279c0cdb1316137480f7c20d9a4f5b5e82b974d54a45091894d6b265d65e1ec9feb8cf7fbd738190cac8d5cdbeceed2de989b20efde6969

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsm06MqV:xj+VGMOtEvwDpjy+viHs7pu

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-06-04_2188ca82dba1154bddc92550bfbe0995_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-04_2188ca82dba1154bddc92550bfbe0995_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4028
    • 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:4420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    45664a4f5bd53cf6c716552ad93c298c

    SHA1

    7f2b668af1d8408f6a21f4892094cc2f35304f49

    SHA256

    f03b18533dfac511b369bc59096b29d83b4c5e4e54252d459b1f35a75f28acc5

    SHA512

    db3d86ab9e9308beaa34adc5f3c9e00076e5fa019bddb26ebe10990b6e14bdf5652c06fce6cd4224ed5c848419d61871a00333e8d7e8e8b243681d0667ce67d3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4028-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4028-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4028-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4028-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4028-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4420-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4420-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/4420-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB