Analysis

  • max time kernel
    130s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 16:56

General

  • Target

    2024-05-12_d92db6b849bb0ed6adf7f2dca415c89a_cryptolocker.exe

  • Size

    39KB

  • MD5

    d92db6b849bb0ed6adf7f2dca415c89a

  • SHA1

    a67c863cbe596e06ea11bb8bb38f7ef6625bf95c

  • SHA256

    a8f1aa888e1e8da2e1e729719882fa669198db24a6a6b07ce4cd3f41d959a307

  • SHA512

    807ba6d3fba42938d585c245ef1240fe231fcf51b8d25922eea3ab6b795f7bc620a978dc3aeb6a2096b8ff5d1e359c21a4b8f28bc653efa9b555521cb01a7e29

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/UkRYzMAZ+mH:vj+jsMQMOtEvwDpj5HcSYPZ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-05-12_d92db6b849bb0ed6adf7f2dca415c89a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_d92db6b849bb0ed6adf7f2dca415c89a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2204
    • 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:760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    62569b9d428e6d839baaab6e46a16da2

    SHA1

    75536da72cf6ab04b50cc127cc58c29424293864

    SHA256

    311726f8e04a51c7b734b41dcb4e10d9753ed21b6df8440fb71bd87a39528dde

    SHA512

    63f55d77d6ba6d9a49df0e7636d2d0d7a146ad13cfd16e776ab4fccf81d008e4dfab1c9e0e60fed4a3d3660b12492eeab6622af981d44b6e7530aedd62632b19

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/760-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/760-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2204-0-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/2204-1-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2204-8-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB