tool
Remsec S0125
- Type
- malware
- Platform
- Windows
- Created
- 31 May 2017
- Last modified
- 12 May 2026
Remsec is a modular backdoor that has been used by Strider and appears to have been designed primarily for espionage purposes. Many of its modules are written in Lua. [1]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0125
Remsec can obtain information about network configuration, including the routing table, ARP cache, and DNS cache.3
Remsec has a package that collects documents from any inserted USB sticks.5
Some data in Remsec is encrypted using RC5 in CBC mode, AES-CBC with a hardcoded key, RC4, or Salsa20. Some data is also base64-encoded.67
Standing S0125
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
92nd percentile · 92% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
94th percentile · 94% of 825 ATT&CK software entries have this many tactics spanned or fewer.
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
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
61st percentile · 61% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Detection coverage S0125
784 distinct rules cover the 30 techniques recorded for this tool. The 844 technique-to-rule mappings resolve to 784 distinct rules, because one rule can cover several techniques. 504 Sigma · 280 Splunk.
Loading detections...
| Select | Title | Description | Category | Status | Event | Product | MITRE ATT&CK | CVEs | Severity | Author | Created | Updated | ID | Refs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
© 2026 The MITRE Corporation. ATT&CK® and D3FEND™ data reproduced with permission. SigmaHQ detection rules licensed under DRL 1.1. attack.mitre.org · d3fend.mitre.org · CAR analytics licensed under Apache 2.0 · car.mitre.org