Threat Actor Profile
High APT
Description

TA577 is an initial access broker (IAB) that has distributed QakBot and Pikabot, and was among the first observed groups distributing Latrodectus in 2023.(Citation: Latrodectus APR 2024)

Confidence Score
90%
Known Aliases
TA577
Tags
mitre-attack stix-2.1 intrusion-set
First Seen

Unknown

Last Updated

Unknown

Active Status
Active
Created

April 29, 2026

MITRE ATT&CK Techniques (6)
T1027.009 - Embedded Payloads
Defense Evasion
T1059.003 - Windows Command Shell
Execution
T1059.007 - JavaScript
Execution
T1204.001 - Malicious Link
Execution
T1566.002 - Spearphishing Link
Initial Access
T1586.002 - Email Accounts
Resource Development
Indicators of Compromise

Loading IOCs…

IOC KQL for Sentinel
STIX Data 
{'aliases': ['TA577'],
 'created': '2024-09-17T16:05:53.084Z',
 'created_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'description': '[TA577](https://attack.mitre.org/groups/G1037) is an initial '
                'access broker (IAB) that has distributed '
                '[QakBot](https://attack.mitre.org/software/S0650) and '
                '[Pikabot](https://attack.mitre.org/software/S1145), and was '
                'among the first observed groups distributing '
                '[Latrodectus](https://attack.mitre.org/software/S1160) in '
                '2023.(Citation: Latrodectus APR 2024)',
 'external_references': [{'external_id': 'G1037',
                          'source_name': 'mitre-attack',
                          'url': 'https://attack.mitre.org/groups/G1037'},
                         {'description': 'Proofpoint Threat Research and Team '
                                         'Cymru S2 Threat Research. (2024, '
                                         'April 4). Latrodectus: This Spider '
                                         'Bytes Like Ice . Retrieved May 31, '
                                         '2024.',
                          'source_name': 'Latrodectus APR 2024',
                          'url': 'https://www.proofpoint.com/us/blog/threat-insight/latrodectus-spider-bytes-ice'}],
 'id': 'intrusion-set--13ef3485-70d2-4567-b934-0e83c1eafcf1',
 'modified': '2024-09-17T16:07:34.686Z',
 'name': 'TA577',
 'object_marking_refs': ['marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168'],
 'revoked': False,
 'spec_version': '2.1',
 'type': 'intrusion-set',
 'x_mitre_attack_spec_version': '3.2.0',
 'x_mitre_deprecated': False,
 'x_mitre_domains': ['enterprise-attack'],
 'x_mitre_modified_by_ref': 'identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5',
 'x_mitre_version': '1.0'}
Quick Actions
Related TTPs (6)
Embedded Payloads
Defense Evasion
Windows Command Shell
Execution
JavaScript
Execution
Malicious Link
Execution
Spearphishing Link
Initial Access
View All 6 TTPs
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