Goopy has the ability to exfiltrate documents from infected systems.2
tool
Goopy S0477
- Type
- malware
- Platform
- Windows
- Created
- 19 June 2020
- Last modified
- 16 April 2025
Goopy is a Windows backdoor and Trojan used by APT32 and shares several similarities to another backdoor used by the group (Denis). Goopy is named for its impersonation of the legitimate Google Updater executable.[1]
18
TechniquesTop 25%
9
TacticsTop 11%
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 S0477
Goopy has had null characters padded in its malicious DLL payload.3
Goopy's decrypter have been inflated with junk code in between legitimate API functions, and also included infinite loops to avoid analysis.4
Goopy has the ability to enumerate the infected system's user name.5
Goopy has impersonated the legitimate goopdate.dll, which was dropped on the target system with a legitimate GoogleUpdate.exe.6
Goopy has the ability to exfiltrate data over the Microsoft Outlook C2 channel.7
Standing S0477
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
Techniques18Top 25%
75th percentile · 75% 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 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 / technique24.5med58th pct
58th percentile · 58% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Tests / technique4.5med
Detection coverage S0477
808 distinct rules cover the 18 techniques recorded for this tool. The 834 technique-to-rule mappings resolve to 808 distinct rules, because one rule can cover several techniques. 548 Sigma · 260 Splunk.
17 covered by at least one rule1 with no coverage808 distinct rules in total
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