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Analysis

  • max time kernel
    0s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/01/2024, 18:42

General

  • Target

    2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe

  • Size

    78KB

  • MD5

    00531770a79e57dab01611817e739289

  • SHA1

    60164b534d264053be6b5c2255035fcc454faba9

  • SHA256

    695a54a5aa9e8bc3d0bbed4af380fd7b6764721e9942023a439373c7de117edd

  • SHA512

    c1e131efef10108ba227e9e5fe23d33dda46a816083c47580284a824e537b86974d406ab6d6739b739550df91bbcf472a04d50040e79d286bf4c79d2f30f9814

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7pBlqrr1HBJooSeKzu1adyBM:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky2

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-23_00531770a79e57dab01611817e739289_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1420
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:5004

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    78KB

    MD5

    20a50dace6337ab8c138bbe08ccfec58

    SHA1

    398e99d77c3ea8680f86d3403a99461534bb3a01

    SHA256

    874a10729342b0143f16d9016a9a50edf23a8709119a18a8724417c709641846

    SHA512

    0271a50a480945cb39e4dfdf728e19d1fe820df7861fbd05a56cb985533cae754be131ffaed993cb29dd0da0d77d0d7036995795c6edf0c5514e8e8783213fc3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1420-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1420-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1420-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1420-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1420-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5004-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5004-20-0x0000000002000000-0x0000000002006000-memory.dmp

    Filesize

    24KB

  • memory/5004-24-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/5004-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB