Analysis

  • max time kernel
    192s
  • max time network
    186s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 14:13

General

  • Target

    c8a5ce5f427e1cb883854b47f8de310ab299fc09ee2211b2aafad533dac810cf.exe

  • Size

    601KB

  • MD5

    3c83c88c48f0f962b3cae34791210225

  • SHA1

    406ee6a8c7b65aea3040c40a3427fa5fb5c7e704

  • SHA256

    c8a5ce5f427e1cb883854b47f8de310ab299fc09ee2211b2aafad533dac810cf

  • SHA512

    208b585105a3b09609a47fee044c640c50fa3eb648f5232b3a735145420bf20fef094c76de0ac9989ca3d6eb2a49e9f8b873ad3b33ffd5cf6cecdc9b2cb0824e

  • SSDEEP

    12288:xORNsuj7LM2e2Bl4St2AxKeAN+GKnvLof/9WraN0bfs3kZwD+ZAdM:xsNsmM2lBmSt2A+yTof/YrdfqkZwD4Aa

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8a5ce5f427e1cb883854b47f8de310ab299fc09ee2211b2aafad533dac810cf.exe
    "C:\Users\Admin\AppData\Local\Temp\c8a5ce5f427e1cb883854b47f8de310ab299fc09ee2211b2aafad533dac810cf.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks computer location settings
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:372
    • C:\Users\Admin\AppData\Local\Temp\n8530\s8530.exe
      "C:\Users\Admin\AppData\Local\Temp\n8530\s8530.exe" 9e2f8bcb5416cb7008fde043lb/kHZc15YcyRJEfAL0wRsIZkr7ufdOD0J5wmFwLuNVXwFL+bUn32XwI8XImEyMkwMID+fD9P/Cw7mNm7dmWtClBihqTivAStHmcqqj0CSBQ5zWwDqoLDc9xBgjVXjTMeFxIRDxn+2SP8twExT2QZNbYNa7BQ2Ro2qSMOgU= /v "C:\Users\Admin\AppData\Local\Temp\c8a5ce5f427e1cb883854b47f8de310ab299fc09ee2211b2aafad533dac810cf.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      PID:4420

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n8530\s8530.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • C:\Users\Admin\AppData\Local\Temp\n8530\s8530.exe

    Filesize

    349KB

    MD5

    f42490846128abad3a6504a02c9ef12c

    SHA1

    017da52f785d1385ee7fd9a5bcb2550096166385

    SHA256

    19f929c13687b2af00ee10f0658333a1636002b185dac113a7a8182c29369951

    SHA512

    983e99e6cdbd86042a3b323bb4c4d0033614a0efd4997327e0fa942e4b56c76b8337ccb692b5a6879acc01fc7d1a7c0ed4b0195bfaff81e526587b0b1a638321

  • memory/4420-132-0x0000000000000000-mapping.dmp

  • memory/4420-135-0x000000001C6D0000-0x000000001D106000-memory.dmp

    Filesize

    10.2MB