RedLine Stealer has collected data stored locally including chat logs and files associated with chat services such as Steam, Discord, and Telegram.8
tool
RedLine Stealer S1240
- Type
- malware
- Platform
- Windows
- Created
- 17 September 2025
- Last modified
- 24 October 2025
RedLine Stealer is an information-stealer malware variant first identified in 2020.[1][2][3] RedLine Stealer is a Malware as a Service (MaaS) and was reportedly sold as either a one-time purchase or a monthly subscription service.[1][4] Information obtained from RedLine Stealer has been known to be sold on the deep and dark web to Initial Access Brokers (IABs), who use or resell the stolen credentials for further intrusions.[5][4]
35
TechniquesTop 4%
11
TacticsTop 2%
0
Threat groupsNone recorded
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S1240
RedLine Stealer can query the Windows Registry.9
RedLine Stealer can enumeate information about victims’ systems including IP addresses.10
RedLine Stealer has used obfuscation tools such as DNGuard and Boxed App to pack their code.11
RedLine Stealer has obfuscated scripts within text files used in execution.12
RedLine Stealer has encrypted and encoded configuration data with Base64 and XOR functions.13
Standing S1240
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
Techniques35Top 4%
96th percentile · 96% 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 groups061% 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.
Campaigns085% 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 / technique15med34th pct
34th percentile · 66% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique6med
Detection coverage S1240
1046 distinct rules cover the 35 techniques recorded for this tool. The 1098 technique-to-rule mappings resolve to 1046 distinct rules, because one rule can cover several techniques. 672 Sigma · 374 Splunk.
32 covered by at least one rule3 with no coverage1046 distinct rules in total
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