Overview

overview

10

Static

static

3

2026-10-28...ry.exe

windows10-2004-x64

10

2026-10-28...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    137s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/10/2026, 07:48

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General

  • Target
    2026-10-28_b956032b56d27edc93747c6bbb5395ac_elex_wannacry.exe
  • Size 428KB
  • Sample261028-jndpasys5m
  • SHA256 b9af75db219428aaa606a7267f49a0f98dde3578b6f36c3d69a2c19dee824a4b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoorbootkitdefense_evasiondiscoveryexecutionfarflipersistencespywarestealer

Malware Config

Signatures

  • Family: Farfli

    Farfli is a Windows backdoor written in C++.

    backdoorfarfli
  • Detects Farfli Backdoor 2 IoCs
  • Detects executables containing base64 encoded User Agent 2 IoCs
  • Badlisted process makes network request 8 IoCs

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

  • Deletes itself 1 TTPs 1 IoCs
    defense_evasion
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

    bootkitpersistence
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 1 IoCs
    defense_evasion
  • Drops file in Program Files directory 2 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

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

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

    discovery
  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

    discovery
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-28_b956032b56d27edc93747c6bbb5395ac_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-28_b956032b56d27edc93747c6bbb5395ac_elex_wannacry.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4120
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\hkzro.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-28_b956032b56d27edc93747c6bbb5395ac_elex_wannacry.exe"
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:3560
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:4816
      • C:\Users\Admin\AppData\Local\Temp\hkzro.exe
        C:\Users\Admin\AppData\Local\Temp\\hkzro.exe "C:\Users\Admin\AppData\Local\Temp\2026-10-28_b956032b56d27edc93747c6bbb5395ac_elex_wannacry.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5396
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\yolyd\slntw.dll",ZipCompress C:\Users\Admin\AppData\Local\Temp\hkzro.exe
          4⤵
          • Badlisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Reads the TCP/IP host and domain name from the registry
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1048

Network

        MITRE ATT&CK Enterprise v16

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Command and Scripting Interpreter

        1
        T1059

        Windows Command Shell

        1
        T1059.003

        Persistence

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Pre-OS Boot

        1
        T1542

        Bootkit

        1
        T1542.003

        Privilege Escalation

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Defense Evasion

        Debugger Evasion

        1
        T1622

        Indicator Removal

        1
        T1070

        File Deletion

        1
        T1070.004

        Modify Registry

        1
        T1112

        Pre-OS Boot

        1
        T1542

        Bootkit

        1
        T1542.003

        Credential Access

        Credentials from Password Stores

        1
        T1555

        Credentials from Web Browsers

        1
        T1555.003

        Unsecured Credentials

        1
        T1552

        Credentials In Files

        1
        T1552.001

        Discovery

        Debugger Evasion

        1
        T1622

        Peripheral Device Discovery

        1
        T1120

        Query Registry

        2
        T1012

        Remote System Discovery

        1
        T1018

        System Information Discovery

        2
        T1082

        System Location Discovery

        1
        T1614

        System Language Discovery

        1
        T1614.001

        System Network Configuration Discovery

        2
        T1016

        Internet Connection Discovery

        1
        T1016.001

        Lateral Movement

        Collection

        Data from Local System

        1
        T1005

        Command and Control

        Exfiltration

        Impact

        Replay Monitor

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        Downloads

        hkzro.exe
        • Path C:\Users\Admin\AppData\Local\Temp\hkzro.exe
        • Size 429KB
        • SHA256 ea939295cb2270b7f7e642a3693571ef18929c839ed0c3d424b90da58fa74f2f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        slntw.dll
        • Path \??\c:\Program Files\yolyd\slntw.dll
        • Size 180KB
        • SHA256 a0c4e71e4084c6e110063b8a634a20e139c23619abce76d8615f25e7e328edb4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1048-10-0x0000000010000000-0x0000000010065000-memory.dmp
        Download

        memory/1048-12-0x000000001004A000-0x000000001004B000-memory.dmp
        Download

        memory/1048-9-0x0000000010000000-0x0000000010065000-memory.dmp
        Download

        memory/1048-13-0x0000000010000000-0x0000000010065000-memory.dmp
        Download

        memory/4120-0-0x0000000000400000-0x000000000046D000-memory.dmp
        Download

        memory/4120-2-0x0000000000400000-0x000000000046D000-memory.dmp
        Download

        memory/5396-6-0x0000000000400000-0x000000000046D000-memory.dmp
        Download