group

Suckfly G0039

Created: 31 May 2017
Last modified: 31 July 2026
Alias: Suckfly

Suckfly is a China-based threat group that has been active since at least 2014. [1]

TechniquesBottom 16%

Tactics48th pct

Tool or malwareBottom 23%

CampaignsNone recorded

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

MITRE reference G0039

OS Credential Dumping T1003↗

Suckfly used a signed credential-dumping tool to obtain victim account credentials.2

Credential Access50 detection rules

Network Service Discovery T1046↗

Suckfly the victim's internal network for hosts with ports 8080, 5900, and 40 open.3

Discovery33 detection rules

Windows Command Shell T1059.003↗

Several tools used by Suckfly have been command-line driven.4

Execution61 detection rules

Valid Accounts T1078↗

Suckfly used legitimate account credentials that they dumped to navigate the internal victim network as though they were the legitimate account owner.5

Initial Access · Persistence · Privilege Escalation · Stealth97 detection rules

Code Signing T1553.002↗

Suckfly has used stolen certificates to sign its malware.6

Defense Impairment1 detection rules

Standing G0039

Reach is how much of ATT&CK this group 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 176 ATT&CK groups 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

Techniques5Bottom 16%

16th percentile · 84% of 176 ATT&CK groups have more Enterprise techniques.

Tactics848th pct

48th percentile · 52% of 176 ATT&CK groups have more tactics spanned.

Tool or malware1Bottom 23%

23rd percentile · 77% of 176 ATT&CK groups have more tools and malware.

Campaigns089% tie · 4 values

89% of the population shares a single value across only 4 distinct values, so a percentile here would rank the tie, not the entity.

Coverage

Rules / technique50medTop 7%

93rd percentile · 93% of 176 ATT&CK groups have this many detection rules per technique or fewer.

Tests / technique6med

Detection coverage G0039

241 distinct rules cover the 5 techniques recorded for this group. The 247 technique-to-rule mappings resolve to 241 distinct rules, because one rule can cover several techniques. 169 Sigma · 72 Splunk.

5 covered by at least one rule241 distinct rules in total

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MITRE reference G0039

Reach

Coverage

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