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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/09/2024, 09:16

General

  • Target

    2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe

  • Size

    90KB

  • MD5

    c1401b9fa68706995020ce885487fbb0

  • SHA1

    4422f8eb2850e89936bbc64790df598b0873ad55

  • SHA256

    5b9f96c730f2d2ed136c4d00497912bba980640d6d18a3726b9880fecf730d6d

  • SHA512

    433aefa256f0ddc5c1f082076886165ea3544bfdb81cfc1ed4e4c6659fb8b8283d7585a42d16e6bcc1cd9da0da88a82de70cb1db5051ac1c42dacaede44a107c

  • SSDEEP

    1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAu:n6a+1SEOtEvwDpjYYvQd2Pu

Score
7/10

Malware Config

Signatures

  • 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 4 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-13_c1401b9fa68706995020ce885487fbb0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2008

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    90KB

    MD5

    dbf36bcbe8e3f56e2758077d7e6f460f

    SHA1

    6997c8b66b8b2ebfe81522a2b62d98a436d16211

    SHA256

    50d3c2af10bd469303378da5e509ef4f69adf0a80511adca8fd3e2a394f52052

    SHA512

    f073bc4c4a01eb47ffcfc3f1051b717869959a6a59e9417151f525ddcc7131e000e6ccf1a304d9e422af6b8060e02b295cb9fdd40eab458df0d3dbb800832c7f

  • memory/2008-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2008-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/2008-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4572-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4572-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4572-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4572-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/4572-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB