Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/03/2024, 14:27

General

  • Target

    2024-03-05_5370c95a8423d9f954d2dc80d4ce08d5_cryptolocker.exe

  • Size

    47KB

  • MD5

    5370c95a8423d9f954d2dc80d4ce08d5

  • SHA1

    a66a7deb4ef9ed4521e707381e0d902670788a1c

  • SHA256

    d326512091124613741f1ad80062cfb29e93e832691e85b0ae03216469b0c509

  • SHA512

    75f8f707ab7f450ef7e885ff26ce88466f0622f25582ec2f3d8bba6558a13aec6cfaac93ec2e9dc97c6b20ab042a9414e33a4f959dc87d3cc5e2f37bb88abca5

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjIm8z2iaSIO/WZrEu/d+qmsUHQ1wsk:ZzFbxmLPWQMOtEvwDpj386Sj/WprqQ12

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-03-05_5370c95a8423d9f954d2dc80d4ce08d5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-05_5370c95a8423d9f954d2dc80d4ce08d5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1188
    • 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:1784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    47KB

    MD5

    7d383761570bfb2b42b228201ddcd225

    SHA1

    d492fb5d444641c834875145e27a79983e68e9a5

    SHA256

    d67c4b5ec30cef664f55edbd92b787ff1cf18bb641268f6eb51b953ffc56762f

    SHA512

    5162e02211d9123b84a0bffcb6078255dd06144afd80301c481dc00d94f86923c8f615c28dffd18b6512a6e4f3faf0624f7d623582fe34a6c9463bf7b01c4020

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1188-0-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/1188-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1188-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1188-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1188-18-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/1784-17-0x0000000000410000-0x0000000000413000-memory.dmp

    Filesize

    12KB

  • memory/1784-20-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/1784-22-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB