group

TA577 G1037

Created: 17 September 2024
Last modified: 31 July 2026
Alias: TA577

TA577 is an initial access broker (IAB) that has distributed QakBot and Pikabot, and was among the first observed groups distributing Latrodectus in 2023.[1]

TechniquesBottom 20%

TacticsBottom 20%

Tools & malware47th pct

CampaignsNone recorded

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

MITRE reference G1037

Embedded Payloads T1027.009↗

TA577 has used LNK files to execute embedded DLLs.2

Stealth2 detection rules

Windows Command Shell T1059.003↗

TA577 has used BAT files in malware execution chains.3

Execution61 detection rules

JavaScript T1059.007↗

TA577 has used JavaScript to execute additional malicious payloads.4

Execution34 detection rules

Malicious Link T1204.001↗

TA577 has lured users into executing malicious JavaScript files by sending malicious links via email.5

Execution6 detection rules

Spearphishing Link T1566.002↗

TA577 has sent emails containing links to malicious JavaScript files.6

Initial Access13 detection rules

Email Accounts T1586.002↗

TA577 has sent thread hijacked messages from compromised emails.7

Resource Developmentno detection rules

Standing G1037

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

Techniques6Bottom 20%

20th percentile · 80% of 176 ATT&CK groups have more Enterprise techniques.

Tactics4Bottom 20%

20th percentile · 80% of 176 ATT&CK groups have more tactics spanned.

Tools & malware347th pct

47th percentile · 53% 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 / technique9.5medBottom 22%

22nd percentile · 78% of 176 ATT&CK groups have more detection rules per technique.

Tests / technique0.5med

Detection coverage G1037

109 distinct rules cover the 6 techniques recorded for this group. The 116 technique-to-rule mappings resolve to 109 distinct rules, because one rule can cover several techniques. 79 Sigma · 30 Splunk.

5 covered by at least one rule1 with no coverage109 distinct rules in total

Drag headers to reorder | Drag edges to resize

Loading detections...

Select	Title	Description	Category	Status	Event	Product	MITRE ATT&CK	CVEs	Severity	Author	Created	Updated	ID	Refs

© 2026 The MITRE Corporation. ATT&CK® and D3FEND™ data reproduced with permission. SigmaHQ detection rules licensed under DRL 1.1. attack.mitre.org · d3fend.mitre.org · CAR analytics licensed under Apache 2.0 · car.mitre.org

MITRE reference G1037

Reach

Coverage

How it got here