Technique
T1091
Tactics
Lateral Movement, Initial Access
MISP citations
0
KEV CVEs mapped
6
Community rules
1
thrunt rules
0
Upstream
https://attack.mitre.org/techniques/T1091

MITRE description

Adversaries may move onto systems, possibly those on disconnected or air-gapped networks, by copying malware to removable media and taking advantage of Autorun features when the media is inserted into a system and executes. In the case of Lateral Movement, this may occur through modification of executable files stored on removable media or by copying malware and renaming it to look like a legitimate file to trick users into executing it on a separate system. In the case of Initial Access, this may occur through manual manipulation of the media, modification of systems used to initially format the media, or modification to the media's firmware itself. Mobile devices may also be used to infect PCs with malware if connected via USB.(Citation: Exploiting Smartphone USB ) This infection may be achieved using devices (Android, iOS, etc.) and, in some instances, USB charging cables.(Citation: Windows Malware Infecting Android)(Citation: iPhone Charging Cable Hack) For example, when a smartphone is connected to a system, it may appear to be mounted similar to a USB-connected disk drive. If malware that is compatible with the connected system is on the mobile device, the malware could infect the machine (especially if Autorun features are enabled).

KEV CVEs mapped to this technique

Per MITRE CTID's hand-curated KEV→ATT&CK mappings — these are the actively-exploited vulnerabilities behind this technique's KEV signal.

Detection coverage

SigmaHQ community rules

Signal counts reflect the current corpus snapshot: MISP citations are regex-extracted from CIRCL OSINT event text and galaxy tags; KEV mappings come from MITRE CTID; community coverage is the SigmaHQ rule inventory (core, emerging-threats, threat-hunting collections) at release r2026-04-01. Rule bodies are not mirrored — links go upstream.