Malware

Out1

Out1 is malware associated with host-based data collection, particularly the harvesting of email content and local system information. Reported functionality includes parsing emails on a target machine and copying files and Windows Registry data from compromised hosts. These behaviors indicate use in post-compromise collection activity, where the malware is used to gather potentially sensitive user and system data for operator review or later exfiltration. Available information supports Out1 as a Windows-focused malware family or tool used for collection from infected endpoints, but does not establish a specific delivery mechanism, threat actor attribution, or a more specialized malware class with high confidence.

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MITRE ATT&CK

Techniques & procedures

5 distinct techniques documented for this family, organized by ATT&CK tactic.

Execution

1 technique

T1059.003Windows Command ShellEvidence3

The content repeatedly describes threat actors and malware using cmd.exe, the Windows command shell, to execute commands, launch payloads, run batch files, and automate actions on compromised hosts.

Stealth

1 technique

T1027Obfuscated Files or InformationEvidence4

The content repeatedly describes malware and threat actors using obfuscated code, encrypted strings, Base64/XOR/RC4/AES encoding, VMProtect/ConfuserEx/SmartAssembly, stack strings, control-flow flattening, opaque predicates, and hidden payloads to evade analysis and detection.

Collection

1 technique

T1005Data from Local SystemEvidence3

Andariel has collected large numbers of files from compromised network systems for later extraction... APT28 has retrieved internal documents from machines inside victim environments... BADNEWS crawls the victim's local drives and collects documents... many listed groups and malware collect files, documents, credentials, payment card data, or other information from compromised hosts.

Command and Control

2 techniques

T1071.001Web ProtocolsEvidence4

The content is a long ATT&CK-style listing showing numerous malware families and threat groups that 'use HTTP,' 'use HTTPS,' 'HTTP POST requests,' 'HTTP GET requests,' or 'HTTP/S' for command and control communications.

T1219Remote Access ToolsEvidence1

"commonly using RMM tools"; "Remote Access/Lateral Movement SimpleHelp, Tactical RMM, Syncro, N-Able"

ACTIVITY FEED

Recent activity

4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

4 SOURCESView more in app

mitre attack websiteNews

Oct 21, 2021

Data from Local System, Technique T1005 - Enterprise | MITRE ATT&CK®

Malware that copies files and registry data from compromised hosts.

mitre attackNews

Jan 24, 2026

Email Collection: Local Email Collection, Sub-technique T1114.001 - Enterprise | MITRE ATT&CK®

Tool/malware component that parses emails on a compromised host.

mitre attackNews

Jan 25, 2026

Email Collection: Local Email Collection, Sub-technique T1114.001 - Enterprise | MITRE ATT&CK®

Malware/tool that can parse emails on a compromised host.

mitre attackNews

Jan 25, 2026

Data from Local System, Technique T1005 - Enterprise | MITRE ATT&CK®

Malware capable of copying files and Windows Registry data from compromised hosts.

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IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping5

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.

Out1