tool

Remcos S0332

Type: tool
Platform: Windows
Created: 29 January 2019
Last modified: 23 April 2026

Remcos is a closed-source tool that is marketed as a remote control and surveillance software by a company called Breaking Security. Remcos has been observed being used in malware campaigns.[1][2]

TechniquesTop 3%

TacticsTop 2%

Threat groupsunranked

Campaignunranked

Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.

MITRE reference S0332

Application Window Discovery T1010↗

Remcos can list all windows on victim systems.3

Discovery1 detection rules

Query Registry T1012↗

Remcos can obtain Registry data from targeted systems.4

Discovery27 detection rules

Obfuscated Files or Information T1027↗

Remcos uses RC4 and base64 to obfuscate data, including Registry entries and file paths.5 Remcos can also employ control flow flattening to hinder analysis.6

Stealth116 detection rules

Encrypted/Encoded File T1027.013↗

Remcos can use string encryption to hinder analysis.7

Stealth1 detection rules

System Owner/User Discovery T1033↗

Remcos can enumerate the username on targeted hosts.8

Discovery47 detection rules

Process Injection T1055↗

Remcos has a command to hide itself by injecting into another process.9

Privilege Escalation · Stealth69 detection rules

Standing S0332

Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.

Reach

Techniques38Top 3%

97th percentile · 97% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.

Tactics11Top 2%

98th percentile · 98% of 825 ATT&CK software entries have this many tactics spanned or fewer.

Threat groups461% tie · 22 values

61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.

Campaign185% tie · 8 values

85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.

Coverage

Rules / technique25.5med61st pct

61st percentile · 61% of 825 ATT&CK software entries have this many detection rules per technique or fewer.

Tests / technique6med

Detection coverage S0332

1226 distinct rules cover the 38 techniques recorded for this tool. The 1332 technique-to-rule mappings resolve to 1226 distinct rules, because one rule can cover several techniques. 823 Sigma · 403 Splunk.

37 covered by at least one rule1 with no coverage1226 distinct rules in total

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MITRE reference S0332

Reach

Coverage

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