Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-09-2024 12:18

General

  • Target

    2024-09-05_f483db3db47af437da6fb88545425639_cryptolocker.exe

  • Size

    82KB

  • MD5

    f483db3db47af437da6fb88545425639

  • SHA1

    f3c26d883568746cbf806409ee2c3b11e743da3f

  • SHA256

    6c12068b444c60aba456ce24f3af0f9c87de0a474bad743d61c621487a7dff2c

  • SHA512

    79d114a2b6a2d5abeafce51d18959834c2105d47a16e466b3ed6860030cd3a1b62a8b9a3e5b245c41bbbbc2c50c3febeba63cbae9508e96e711fb9fd76296ebd

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qil:zCsanOtEvwDpji

Score
7/10

Malware Config

Signatures

  • 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 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.

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-05_f483db3db47af437da6fb88545425639_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-05_f483db3db47af437da6fb88545425639_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:3700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    82KB

    MD5

    c96f5752ebf26ab43d5d8ddb95419746

    SHA1

    43437d315f5ee12c2851e70ea2e80e3c4ec41f09

    SHA256

    c338a4f4a3ceb30ffb85b813ce8b5923570a108154482f78daedc5ec845a6a96

    SHA512

    c170667b8b4b2e71e2077310a34c2d210eb430885bd5c02eee7376d126c1b83d851efebb743729d39d0e6b7c99f6a4439145d600fd578af6056b2f71bf301555

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1512-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1512-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/1512-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

    Filesize

    24KB

  • memory/1512-3-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/1512-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3700-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3700-24-0x0000000000830000-0x0000000000836000-memory.dmp

    Filesize

    24KB

  • memory/3700-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB