Analysis

  • max time kernel
    93s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/11/2024, 02:34

General

  • Target

    2024-11-20_a9f5db99e7d6bf5ce6138216b53e6787_cryptolocker.exe

  • Size

    25KB

  • MD5

    a9f5db99e7d6bf5ce6138216b53e6787

  • SHA1

    2d3ed4b92b26af2a3c883c38d19650e279c3a6c4

  • SHA256

    8cb75dbb747e09b17b4b279b8fe4cf37f9344e5eb2fad464e12e3651bc9e57da

  • SHA512

    6333d13a77a22e25da21358305492ed4cea61af40b55024a41c15f39e6636607ad43e9562ec0a727788ae6fc48e3b17077a15ab804830203951134b047c43e49

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/P4QtOOtEvwDpj2:ZzFbxmLP4QMOtEvwDpj2

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
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-20_a9f5db99e7d6bf5ce6138216b53e6787_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-20_a9f5db99e7d6bf5ce6138216b53e6787_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4776
    • 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:640

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    25KB

    MD5

    84c2133608e3504d63562abce5d24094

    SHA1

    4b19fd8038c240fcec700d15aa0e3e240f002da2

    SHA256

    8d7ce5f7f93eb97a83f245ac811a4bffc67a8b64fd0486b41fe1743cf9930c27

    SHA512

    93c03914692ec3d6a97f9f24bd841889242bfba793f3060b686b19aeab439a6b35ddd117b55ebf4a911137c8edea5fe27c5231b8ec217e077faa4eccce949d7f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/640-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/640-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/640-17-0x0000000000450000-0x0000000000453000-memory.dmp

    Filesize

    12KB

  • memory/4776-0-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB

  • memory/4776-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/4776-2-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/4776-1-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/4776-18-0x00000000004F0000-0x00000000004F3000-memory.dmp

    Filesize

    12KB