defection.io

tool

QuasarRAT S0262

Type: tool
Platform: Windows
Created: 17 October 2018
Last modified: 12 May 2026

QuasarRAT is an open-source, remote access tool that has been publicly available on GitHub since at least 2014. QuasarRAT is developed in the C# language.[1][2]

TechniquesTop 12%

TacticsTop 6%

Threat groupsunranked

CampaignsNone recorded

Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.

defection.io

tool

QuasarRAT S0262

Type: tool
Platform: Windows
Created: 17 October 2018
Last modified: 12 May 2026

QuasarRAT is an open-source, remote access tool that has been publicly available on GitHub since at least 2014. QuasarRAT is developed in the C# language.[1][2]

TechniquesTop 12%

TacticsTop 6%

Threat groupsunranked

CampaignsNone recorded

Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.

QuasarRAT MITRE reference S0262

Data from Local System T1005 ↗

QuasarRAT can retrieve files from compromised client machines.3

Collection22 detection rules

Application Window Discovery T1010 ↗

APT-C-36 used a customized version of QuasarRAT to monitor browser windows for strings relating to specific Colombian financial institutions.4

Discovery1 detection rules

System Network Configuration Discovery T1016 ↗

QuasarRAT has the ability to enumerate the Wide Area Network (WAN) IP through requests to ip-api[.]com, freegeoip[.]net, or api[.]ipify[.]org observed with user-agent string Mozilla/5.0 (Windows NT 6.3; rv:48.0) Gecko/20100101 Firefox/48.0.5

Discovery25 detection rules

Remote Desktop Protocol T1021.001 ↗

QuasarRAT has a module for performing remote desktop access.6 7

Lateral Movement33 detection rules

System Owner/User Discovery T1033 ↗

QuasarRAT can enumerate the username and account type.8

Discovery47 detection rules

Scheduled Task T1053.005 ↗

QuasarRAT contains a .NET wrapper DLL for creating and managing scheduled tasks for maintaining persistence upon reboot.9 10

Execution · Persistence · Privilege Escalation79 detection rules

Standing S0262

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

Techniques25Top 12%

88th percentile · 88% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.

Tactics10Top 6%

94th percentile · 94% of 825 ATT&CK software entries have this many tactics spanned or fewer.

Threat groups761% 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 / technique22med53rd pct

53rd percentile · 53% of 825 ATT&CK software entries have this many detection rules per technique or fewer.

Tests / technique8med72nd pct

72nd percentile · 72% of 825 ATT&CK software entries have this many atomic tests per technique or fewer.

Data comps / technique4med54% tie · 11 values

54% of the population shares a single value across only 11 distinct values, so a percentile here would rank the tie, not the entity.

Mitigations / technique1med57th pct

57th percentile · 57% of 825 ATT&CK software entries have this many mitigations per technique or fewer.

5 of 8 axes carry an honest rank on this page. Coverage medians are taken across this tool’s 25 Enterprise techniques.

Range

Technique Campaign use over its cumulative rule count.

Campaigns · 0Sigma rules (cumulative) · 553Splunk ESCU (cumulative) · 280