LunarWeb can receive C2 commands hidden in the structure of .jpg and .gif images.2
tool
LunarWeb S1141
- Type
- malware
- Platform
- Windows
- Created
- 26 June 2024
- Last modified
- 16 August 2024
LunarWeb is a backdoor that has been used by Turla since at least 2020 including in a compromise of a European ministry of foreign affairs (MFA) together with LunarLoader and LunarMail. LunarWeb has only been observed deployed against servers and can use Steganography to obfuscate command and control.[1]
30
TechniquesTop 8%
6
Tactics53rd pct
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S1141
LunarWeb can use shell commands to discover network adapters and configuration.3
The LunarWeb install files have been encrypted with AES-256.4
LunarWeb can split exfiltrated data that exceeds 1.33 MB in size into multiple random sized parts between 384 and 512 KB.5
LunarWeb can collect user information from the targeted host.6
LunarWeb can use WMI queries for discovery on the victim host.7
Standing S1141
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
Techniques30Top 8%
92nd percentile · 92% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics653rd pct
53rd percentile · 53% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat group161% 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 / technique16.5med38th pct
38th percentile · 62% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique6.5med
Detection coverage S1141
803 distinct rules cover the 30 techniques recorded for this tool. The 899 technique-to-rule mappings resolve to 803 distinct rules, because one rule can cover several techniques. 571 Sigma · 232 Splunk.
26 covered by at least one rule4 with no coverage803 distinct rules in total
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