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
    09/06/2024, 05:32

General

  • Target

    2024-06-09_50a77fed12a9d8ad7ec5d3cbf24e56c3_cryptolocker.exe

  • Size

    43KB

  • MD5

    50a77fed12a9d8ad7ec5d3cbf24e56c3

  • SHA1

    848bff74e271bba72d6294158ed6812b19baebcd

  • SHA256

    a5b4e3edbdb9ad3ab0db61fa414db6f47fd7dd0addcaf8475b006073097a2d92

  • SHA512

    219ba22b2075ccfe5e6ff6bfe59492858099cbacf9a8d4241715997a18dee45904631c146941929f5b4a75f3290b4fe75da53215130c93efd0903b34f38ac2dc

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/agqES:6j+1NMOtEvwDpjrRtq/

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\2024-06-09_50a77fed12a9d8ad7ec5d3cbf24e56c3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_50a77fed12a9d8ad7ec5d3cbf24e56c3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1584
    • 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:1832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    a198f10de95846a022e6c49a229fc7dd

    SHA1

    b290a271a8ab7f440ee8a0d7b040182dd0841ab8

    SHA256

    29904d99f891ad2393b339fd2b2b1e018f2011de56b67bd316fecfdba814aae9

    SHA512

    d2cc02eb367bd576958c3cf6a68c4df6a9f099a622f9d61ee7cc93dd923bdf0d667b290f3a3e42fd2037fe8ae872fd27a9324bbc521cc1f85b2bb97bdbc9ef50

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1584-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1584-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/1584-2-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/1584-9-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/1584-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1832-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1832-20-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/1832-26-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1832-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB