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Home/ATT&CK/T1135
MITRE ATT&CK Technique

T1135: Network Share Discovery

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Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and to identify potential systems of interest for Lateral Movement. Networks often contain shared network drives and folders that enable users to access file directories on various systems across a network. File sharing over a Windows network occurs over the SMB protocol. (Citation: Wikipedia Shared Resource) (Citation: TechNet Shared Folder) [Net](https://attack.mitre.org/software/S0039) can be used to query a remote system for available shared drives using the <code>net view \\\\remotesystem</code> command. It can also be used to query shared drives on the local system using <code>net share</code>. For macOS, the <code>sharing -l</code> command lists all shared points used for smb services.

Tactics
Discovery
Platforms
Linux, macOS, Windows

▪Mitigations (1)

M1028Operating System Configuration

Operating System Configuration involves adjusting system settings and hardening the default configurations of an operating system (OS) to mitigate adversary exploitation and prevent abuse of system functionality. Proper OS configurations address security vulnerabilities, limit attack surfaces, and ensure robust defense against a wide range of techniques. This mitigation can be implemented through the following measures: Disable Unused Features: - Turn off SMBv1, LLMNR, and NetBIOS where not needed. - Disable remote registry and unnecessary services. Enforce OS-level Protections: - Enable Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Control Flow Guard (CFG) on Windows. - Use AppArmor or SELinux on Linux for mandatory access controls. Secure Access Settings: - Enable User Account Control (UAC) for Windows. - Restrict root/sudo access on Linux/macOS and enforce strong permissions using sudoers files. File System Hardening: - Implement least-privilege access for critical files and system directories. - Audit permissions regularly using tools like icacls (Windows) or getfacl/chmod (Linux/macOS). Secure Remote Access: - Restrict RDP, SSH, and VNC to authorized IPs using firewall rules. - Enable NLA for RDP and enforce strong password/lockout policies. Harden Boot Configurations: - Enable Secure Boot and enforce UEFI/BIOS password protection. - Use BitLocker or LUKS to encrypt boot drives. Regular Audits: - Periodically audit OS configurations using tools like CIS Benchmarks or SCAP tools. *Tools for Implementation* Windows: - Microsoft Group Policy Objects (GPO): Centrally enforce OS security settings. - Windows Defender Exploit Guard: Built-in OS protection against exploits. - CIS-CAT Pro: Audit Windows security configurations based on CIS Benchmarks. Linux/macOS: - AppArmor/SELinux: Enforce mandatory access controls. - Lynis: Perform comprehensive security audits. - SCAP Security Guide: Automate configuration hardening using Security Content Automation Protocol. Cross-Platform: - Ansible or Chef/Puppet: Automate configuration hardening at scale. - OpenSCAP: Perform compliance and configuration checks.

▪Used by groups (16)

G0006APT1G0035DragonflyG0050APT32G0054SowbugG0081Tropic TrooperG0082APT38G0087APT39G0096APT41G0102Wizard SpiderG0105DarkVishnyaG0114ChimeraG0131Tonto TeamG1016FIN13G1032INC RansomG1043BlackByteG1051Medusa Group

▪Software using this technique (57)

S0013PlugXmalwareS0039NettoolS0154Cobalt StrikemalwareS0165OSInfomalwareS0192PupytoolS0233MURKYTOPmalwareS0236KwampirsmalwareS0250KoadictoolS0251ZebrocymalwareS0260InvisiMolemalwareS0266TrickBotmalwareS0363EmpiretoolS0365Olympic DestroyermalwareS0367EmotetmalwareS0444ShimRatmalwareS0458RamsaymalwareS0483IcedIDmalwareS0488CrackMapExectoolS0534BazarmalwareS0570BitPaymermalwareS0575ContimalwareS0603StuxnetmalwareS0606Bad RabbitmalwareS0611ClopmalwareS0612WastedLockermalwareS0616DEATHRANSOMmalwareS0617HELLOKITTYmalwareS0618FIVEHANDSmalwareS0625CubamalwareS0638BabukmalwareS0640AvaddonmalwareS0650QakBotmalwareS0659DiavolmalwareS0660ClamblingmalwareS0686QuietSievemalwareS0689WhisperGatemalwareS0692SILENTTRINITYtoolS0696FlagpromalwareS1053AvosLockermalwareS1068BlackCatmalwareS1073RoyalmalwareS1075KOPILUWAKmalwareS1081BADHATCHmalwareS1085SardonicmalwareS1129AkiramalwareS1139INC RansomwaremalwareS1141LunarWebmalwareS1159DUSTTRAPmalwareS1160LatrodectusmalwareS1180BlackByte RansomwaremalwareS1181BlackByte 2.0 RansomwaremalwareS1199LockBit 2.0malwareS1202LockBit 3.0malwareS1212RansomHubmalwareS1242QilinmalwareS1244Medusa RansomwaremalwareS1247Embargomalware

▪Reference

T1135on MITRE ATT&CK

MITRE ATT&CK® is a registered trademark of The MITRE Corporation. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.