Analysis

  • max time kernel
    149s
  • max time network
    164s
  • 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, 01:22

General

  • Target

    a5f24ce3d88b86d3e2274073f1d0dfa832e3e7411081503303bf8d4a73955d55.exe

  • Size

    512KB

  • MD5

    b4aa38bf316917e74f07971fc7df47a4

  • SHA1

    0a424f7015f5a001df4bf34322fafbcca0fa5694

  • SHA256

    a5f24ce3d88b86d3e2274073f1d0dfa832e3e7411081503303bf8d4a73955d55

  • SHA512

    044f431b54bd126cb5c674a506f4d2ec7f4986bae9300a074cd159fae5e3d69501f7af40a39bc4377518821fa6a5f27b7ea6836dcb5af3e34df12937a3ec3681

  • SSDEEP

    12288:0+h9St2Ma70zIIc91Dwws4zruXic2O/3E4n:0+h9OY70z+warul3E4n

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 3 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\a5f24ce3d88b86d3e2274073f1d0dfa832e3e7411081503303bf8d4a73955d55.exe
    "C:\Users\Admin\AppData\Local\Temp\a5f24ce3d88b86d3e2274073f1d0dfa832e3e7411081503303bf8d4a73955d55.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:2508
    • C:\Users\Admin\AppData\Local\Temp\n2147\s2147.exe
      "C:\Users\Admin\AppData\Local\Temp\n2147\s2147.exe" 737daea666008ad6dab50dbdDFg3eaUPXdRjDjouffkeV6utnE2w9Uc2Htpodkb8vUNvnbcV9O3bSabYeycLjI5gw41M2wUkpxhWtoRkIeq10hxYwKzdpB/u1BmOI9FhUgcGLKXqR+/U61O3qX5U4d6MV6nxqhdpKdSDXRKGm8fbZBBU /v "C:\Users\Admin\AppData\Local\Temp\a5f24ce3d88b86d3e2274073f1d0dfa832e3e7411081503303bf8d4a73955d55.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:4864

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\n2147\s2147.exe

          Filesize

          230KB

          MD5

          abaf13cb23de482dc944ab5b51ca3aac

          SHA1

          76837356db96dd56b647aba60f1adbbdc7b200fe

          SHA256

          b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

          SHA512

          cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

        • C:\Users\Admin\AppData\Local\Temp\n2147\s2147.exe

          Filesize

          230KB

          MD5

          abaf13cb23de482dc944ab5b51ca3aac

          SHA1

          76837356db96dd56b647aba60f1adbbdc7b200fe

          SHA256

          b02fad5ac5234401505e1682c86f526951e8ded726687088c30987321f7c105e

          SHA512

          cc2aac30490511e49e1268f5df9139d176a3b849e663ad3b739e2f1cb50a6e084c465772ded5f694d5ec6f19ac40a57e5e64f7c47515f212476c20cbe9d6bce3

        • memory/4864-135-0x00007FFCC24A0000-0x00007FFCC2ED6000-memory.dmp

          Filesize

          10.2MB

        • memory/4864-136-0x000000000188A000-0x000000000188F000-memory.dmp

          Filesize

          20KB

        • memory/4864-137-0x000000000188A000-0x000000000188F000-memory.dmp

          Filesize

          20KB

        • memory/4864-138-0x000000000188A000-0x000000000188F000-memory.dmp

          Filesize

          20KB