Overview

overview

10

Static

static

3

2026-09-30...ry.exe

windows10-2004-x64

10

2026-09-30...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    140s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 08:39

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General

  • Target
    2026-09-30_aedb05b4550536e258ac7fdc1573e64d_elex_wannacry.exe
  • Size 93KB
  • Sample260930-kkhdrashrc
  • SHA256 d5615ab85b9f619202c367aebfc4c14819ad1861f8a59ba557e372d033b01dfb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoorbootkitdefense_evasiondiscoveryexecutionfarflipersistencespywarestealerupx

Malware Config

Signatures

  • Family: Farfli

    Farfli is a Windows backdoor written in C++.

    backdoorfarfli
  • Detects Farfli Backdoor 5 IoCs
  • Detects executables containing base64 encoded User Agent 5 IoCs
  • UPX dump on OEP (original entry point) 8 IoCs
  • Badlisted process makes network request 8 IoCs

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

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • 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 24 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
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • 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 4 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\2026-09-30_aedb05b4550536e258ac7fdc1573e64d_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-30_aedb05b4550536e258ac7fdc1573e64d_elex_wannacry.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4948
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&c:\cmaudmc.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-30_aedb05b4550536e258ac7fdc1573e64d_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:1744
      • 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:2308
      • \??\c:\cmaudmc.exe
        c:\cmaudmc.exe "C:\Users\Admin\AppData\Local\Temp\2026-09-30_aedb05b4550536e258ac7fdc1573e64d_elex_wannacry.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4320
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\dqnsz\uugbdswdn.dll",init c:\cmaudmc.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)
          • 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:4516
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:1124

    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

          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

          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

          cmaudmc.exe
          • Path \??\c:\cmaudmc.exe
          • Size 93KB
          • SHA256 c79f0c40ae93c47a7b5a74f257aa664f152c9de6d34289da3fa1aa6064078d5c
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          uugbdswdn.dll
          • Path \??\c:\dqnsz\uugbdswdn.dll
          • Size 46KB
          • SHA256 b6bc7902da0250f6ca920b35b222f6a0fe62102caf05d2a1722c4d3b225a0a9e
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/4320-6-0x0000000000400000-0x0000000000417000-memory.dmp
          Download

          memory/4516-9-0x0000000010000000-0x0000000010024000-memory.dmp
          Download

          memory/4516-10-0x0000000010000000-0x0000000010024000-memory.dmp
          Download

          memory/4516-12-0x0000000010000000-0x0000000010024000-memory.dmp
          Download

          memory/4516-13-0x0000000010000000-0x0000000010024000-memory.dmp
          Download

          memory/4516-14-0x0000000010000000-0x0000000010024000-memory.dmp
          Download

          memory/4516-15-0x0000000010000000-0x0000000010024000-memory.dmp
          Download

          memory/4948-0-0x0000000000400000-0x0000000000417000-memory.dmp
          Download

          memory/4948-2-0x0000000000400000-0x0000000000417000-memory.dmp
          Download