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Analysis

  • max time kernel
    185s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/11/2022, 06:39

General

  • Target

    f74e31a43208d3ddbf2685a5273c8df40bfa0408c2cb22219a76593911690819.exe

  • Size

    512KB

  • MD5

    e3949be583900b9e893ec41c5c5b2eda

  • SHA1

    cc15e4aa20a33d838061d584c9c64cf58758537e

  • SHA256

    f74e31a43208d3ddbf2685a5273c8df40bfa0408c2cb22219a76593911690819

  • SHA512

    50ed62c9a4fcf157c941147b79d66b0acfd692e600ec55ad85cc0fece51ab450a3ef2ec64033c3b051abb2ff9fa2d4861d1e77640e420ec40ad08b38d8b1b4f8

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4Q:0+h9OY70z+warul3E4Q

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 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f74e31a43208d3ddbf2685a5273c8df40bfa0408c2cb22219a76593911690819.exe
    "C:\Users\Admin\AppData\Local\Temp\f74e31a43208d3ddbf2685a5273c8df40bfa0408c2cb22219a76593911690819.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:2400
    • C:\Users\Admin\AppData\Local\Temp\n45\s45.exe
      "C:\Users\Admin\AppData\Local\Temp\n45\s45.exe" f2efb18b5cd25dfb28b883b56MZIs/qKxkAAi6e+5giIUqD6r6LAzf0TPlJ1kcRCN4gfB3yJNTfqFJwB6XFVlfGGQaC0QucYD/9XSvxx3mazKF3/pvG0J224j+uiaBtRD3hlwP+Cr3bphBiOdkWPL9IjpEs2Lbtr+IP6umSGekIlYtE5 /v "C:\Users\Admin\AppData\Local\Temp\f74e31a43208d3ddbf2685a5273c8df40bfa0408c2cb22219a76593911690819.exe"
      2⤵
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in Windows directory
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:400

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\n45\s45.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • C:\Users\Admin\AppData\Local\Temp\n45\s45.exe

    Filesize

    230KB

    MD5

    abaf13cb23de482dc944ab5b51ca3aac

    SHA1

    76837356db96dd56b647aba60f1adbbdc7b200fe

    SHA256

    b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

    SHA512

    cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

  • memory/400-135-0x00007FF855BE0000-0x00007FF856616000-memory.dmp

    Filesize

    10.2MB

  • memory/400-136-0x00000000013AA000-0x00000000013AF000-memory.dmp

    Filesize

    20KB

  • memory/400-137-0x00000000013AA000-0x00000000013AF000-memory.dmp

    Filesize

    20KB