Uroburos can add extra characters in encoded strings to help mimic DNS legitimate requests.3
tool
Uroburos S0022
- Type
- malware
- Platforms
- Linux, Windows, macOS
- Created
- 31 May 2017
- Last modified
- 10 April 2024
Uroburos is a sophisticated cyber espionage tool written in C that has been used by units within Russia's Federal Security Service (FSB) associated with the Turla toolset to collect intelligence on sensitive targets worldwide. Uroburos has several variants and has undergone nearly constant upgrade since its initial development in 2003 to keep it viable after public disclosures. Uroburos is typically deployed to external-facing nodes on a targeted network and has the ability to leverage additional tools and TTPs to further exploit an internal network. Uroburos has interoperable implants for Windows, Linux, and macOS, employs a high level of stealth in communications and architecture, and can easily incorporate new or replacement components.[1][2]
36
TechniquesTop 4%
8
TacticsTop 20%
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 S0022
Uroburos can use custom communication methodologies that ride over common protocols including TCP, UDP, HTTP, SMTP, and DNS in order to blend with normal network traffic. 4
Uroburos can use its Get command to exfiltrate specified files from the compromised system.5
Uroburos can use up to 10 channels to communicate between implants.6
Uroburos can query the Registry, typically HKLM:\SOFTWARE\Classes\.wav\OpenWithProgIds, to find the key and path to decrypt and load its kernel driver and kernel driver loader.7
Uroburos can use its kernel module to prevent its host components from being listed by the targeted system's OS and to mediate requests between user mode and concealed components.89
Standing S0022
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
Techniques36Top 4%
96th percentile · 96% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics8Top 20%
80th percentile · 80% 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 / technique6medBottom 8%
8th percentile · 92% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique4med
Detection coverage S0022
789 distinct rules cover the 36 techniques recorded for this tool. The 836 technique-to-rule mappings resolve to 789 distinct rules, because one rule can cover several techniques. 514 Sigma · 275 Splunk.
30 covered by at least one rule6 with no coverage789 distinct rules in total
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