FlawedAmmyy may obfuscate portions of the initial C2 handshake.2
tool
FlawedAmmyy S0381
- Type
- malware
- Platform
- Windows
- Created
- 28 May 2019
- Last modified
- 16 April 2025
FlawedAmmyy is a remote access tool (RAT) that was first seen in early 2016. The code for FlawedAmmyy was based on leaked source code for a version of Ammyy Admin, a remote access software.[1]
22
TechniquesTop 16%
9
TacticsTop 11%
2
Threat groupsunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0381
FlawedAmmyy has collected information and files from a compromised machine.3
FlawedAmmyy enumerates the current user during the initial infection.45
FlawedAmmyy has sent data collected from a compromised host to its C2 servers.6
FlawedAmmyy leverages WMI to enumerate anti-virus on the victim.7
FlawedAmmyy can collect mouse events.8
Standing S0381
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
Techniques22Top 16%
84th percentile · 84% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics9Top 11%
89th percentile · 89% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat groups261% 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 / technique26med64th pct
64th percentile · 64% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Tests / technique7.5med
Detection coverage S0381
911 distinct rules cover the 22 techniques recorded for this tool. The 988 technique-to-rule mappings resolve to 911 distinct rules, because one rule can cover several techniques. 649 Sigma · 262 Splunk.
21 covered by at least one rule1 with no coverage911 distinct rules in total
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