Overview

overview

8

Static

static

3

BFC5C2051F...AF.dll

windows10-2004-x64

8

BFC5C2051F...AF.dll

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/08/2026, 02:55

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General

  • Target
    BFC5C2051F563B2B0199CBD8A6237CAF.dll
  • Size 5.7MB
  • Sample260820-devnka1xas
  • SHA256 51307cb85f159a0ccd4cd31efb33bf3aca0c56f612b667d801698fdd6656e775
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
defense_evasiondiscoveryexecution

Malware Config

Signatures

  • Badlisted process makes network request 6 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Executes dropped EXE 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery
  • Discovers running processes 1 TTPs 3 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

    discovery
  • Drops file in System32 directory 1 IoCs
  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Delays execution with timeout.exe 3 IoCs
    defense_evasion
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\BFC5C2051F563B2B0199CBD8A6237CAF.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2968
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\BFC5C2051F563B2B0199CBD8A6237CAF.dll,#1
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5680
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im cmd.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2668
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\S-1-5-21-3797332335-34111092-3597280141\S-1-5-21-3797332335-34111092-3597280141.CMD
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1548
        • C:\Windows\SysWOW64\cmd.exe
          cmd /C C:\Users\Admin\AppData\Local\Temp\S-1-5-21-3797332335-34111092-3597280141\S-1-5-21-3797332335-34111092-3597280141.CMD
          4⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2540
          • C:\Windows\SysWOW64\tasklist.exe
            TASKLIST /FI "IMAGENAME eq rundll32.exe" /FO CSV
            5⤵
            • Discovers running processes
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:5460
          • C:\Windows\SysWOW64\find.exe
            FIND /I "rundll32.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1316
          • C:\Windows\SysWOW64\timeout.exe
            TIMEOUT /t 60 /nobreak
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:4888
          • C:\Windows\SysWOW64\tasklist.exe
            TASKLIST /FI "IMAGENAME eq rundll32.exe" /FO CSV
            5⤵
            • Discovers running processes
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1436
          • C:\Windows\SysWOW64\find.exe
            FIND /I "rundll32.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:5892
          • C:\Windows\SysWOW64\timeout.exe
            TIMEOUT /t 60 /nobreak
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:832
          • C:\Windows\SysWOW64\tasklist.exe
            TASKLIST /FI "IMAGENAME eq rundll32.exe" /FO CSV
            5⤵
            • Discovers running processes
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2404
          • C:\Windows\SysWOW64\find.exe
            FIND /I "rundll32.exe"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:3168
          • C:\Windows\SysWOW64\timeout.exe
            TIMEOUT /t 60 /nobreak
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:2536
  • C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5724

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        S-1-5-21-3797332335-34111092-3597280141.CMD
        • Path C:\Users\Admin\AppData\Local\Temp\S-1-5-21-3797332335-34111092-3597280141\S-1-5-21-3797332335-34111092-3597280141.CMD
        • Size 1KB
        • SHA256 e3112acf041eeaefdb36893266f4984e0d4afcdfb05a29ee5bb9b6c5550b1d26
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rundll32.exe
        • Path C:\Windows\SysWOW64\rundll32.exe
        • Size 51KB
        • SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5680-6-0x0000000004800000-0x0000000004858000-memory.dmp
        Download

        memory/5680-7-0x0000000004800000-0x0000000004858000-memory.dmp
        Download

        memory/5680-9-0x0000000004800000-0x0000000004858000-memory.dmp
        Download

        memory/5680-10-0x0000000004800000-0x0000000004858000-memory.dmp
        Download

        memory/5680-11-0x0000000004800000-0x0000000004858000-memory.dmp
        Download