Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2024 17:32

General

  • Target

    2024-01-25_862fb7858e5217ad87827bb6960c81e2_cryptolocker.exe

  • Size

    77KB

  • MD5

    862fb7858e5217ad87827bb6960c81e2

  • SHA1

    923405e570b8fa5c84ea79a3b118bd3e2d53cce0

  • SHA256

    e2090f410d4cca626001c53199a367bb00d12fcfbcd48722f806f5cdd5f62255

  • SHA512

    3bcb49fe3bfc547d7f7f0fa65c866e83b0d44ebabead165a13ac339b29af7e5441189878debdc23b96d27043c132296d79ed44cd189dd4b387270ef8f272d674

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Q5:zCsanOtEvwDpjd

Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • 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 2 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\2024-01-25_862fb7858e5217ad87827bb6960c81e2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_862fb7858e5217ad87827bb6960c81e2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4148
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    77KB

    MD5

    6401654b2b89b9be078e81f70a936c57

    SHA1

    38c12f94305530d1b2b6dcbac48256758b11af3a

    SHA256

    9616e2cf396283d3d3877c2f28489fcbf5df3685ac906d862c643e37d9e0e1d4

    SHA512

    b138bfa3815705f064e051f8e006b54be4e213e2917a315ac71253bfe7d5cef4d88bbbbc1f894c6bc76667fed9587dd1f63db8f747da3caa4dc2d43871cd1a52

  • memory/3484-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3484-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3484-26-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3484-55-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4148-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4148-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4148-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/4148-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4148-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB