Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/05/2024, 07:22

General

  • Target

    2024-05-28_f3d90be6f15c369db46294b104106fcb_cryptolocker.exe

  • Size

    48KB

  • MD5

    f3d90be6f15c369db46294b104106fcb

  • SHA1

    f9914aec04580207785b599fef445355cdb750d7

  • SHA256

    33b87b5f58a79bb80a9956ad0de8f227c980d2bebd3429689002ee86a0776ced

  • SHA512

    9e31cbd6575be5d91863f1cc4a139c9612a48a6bf32a8618bc1739c695073b1a97f9e6693139a270af9471e366f7e9973d63128e881f8c94741106e02f57fca5

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRSm:XS5nQJ24LR1bytOOtEvwDpjNbP/bmd

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-05-28_f3d90be6f15c369db46294b104106fcb_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_f3d90be6f15c369db46294b104106fcb_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2628
    • 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:836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    48KB

    MD5

    c617e3b60e517f6353014b8e72c913d9

    SHA1

    962ed5f8541476c0e389a5c347ef123802ef2e9b

    SHA256

    b6046c0e559fb3e8d46f70e88bf1f7b6485e87ae30b7499c5473acda727b6b4f

    SHA512

    ba6508a1908e912550145d7e3e5786e706bacdcc4a1a7997ba2b03a489621e17bccd820f60c3d73167433253e877d369312ae104b39eae1f0afb032326c7ec9e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/836-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/836-20-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/836-26-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/836-50-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2628-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2628-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2628-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2628-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2628-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB