5 malware families

DEV-0506

Also known asDEV-0506

DEV-0506 is a Microsoft-tracked cybercriminal ransomware affiliate. Microsoft reported that DEV-0506 previously deployed Conti before the Conti shutdown and later switched to deploying Black Basta regularly. Microsoft also stated that DEV-0506 uses DEV-0365’s Cobalt Strike Beacon infrastructure and has been observed adding Brute Ratel. Microsoft further identified DEV-0506 as one of the affiliates linked to Qakbot distributor activity from DEV-0450 and DEV-0464, indicating infections from those distributors have led to ransomware deployments by DEV-0506. High-confidence aliases directly mentioned in the content are limited to DEV-0506.

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MITRE ATT&CK

Tradecraft

4 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.

2 of 15 tactics4 techniques×N= number of intelligence reports citing this technique

MITRE ATT&CK

TA0011

Command and Control

3 techniques

T1071

Application Layer Protocol

T1105

Ingress Tool Transfer

T1219

Remote Access Tools

TA0040

Impact

1 technique

T1486

Data Encrypted for Impact

ARSENAL

Associated malware families

5 malware families attributed to this actor across reporting.

FamilyContextEvidenceLast seen

Black BastaFor example, DEV-0506 was deploying BlackBasta part-time before the Conti shutdown and is now deploying it regularly.1May 26, 2026

Brute Ratel C4In late September 2022, Microsoft observed DEV-0506 adding Brute Ratel as a tool to facilitate their hands-on-keyboard access as well as Cobalt Strike Beacons.1May 26, 2026

Cobalt StrikeThis industrialization of the cybercrime economy has made it easier for attackers to use ready-made penetration testing and other tools to perform their attacks. Within this category ... attackers using off-the-shelf tools, such as Cobalt Strike...1May 26, 2026

ContiBased on our telemetry from 2021 and 2022, Conti has become one of the most deployed RaaS ecosystems, with multiple affiliates concurrently deploying their payload.1May 26, 2026

QakBotSeptember 2022 update – New information about recent Qakbot campaigns leading to ransomware deployment. ... Another widely distributed malware, Qakbot, also leads to handoffs to RaaS affiliates.1May 26, 2026

ACTIVITY FEED

Recent activity

2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

2 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

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Target overlap

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Tradecraft mapping4

Every observed MITRE ATT&CK technique, grouped by tactic.

Malware arsenal5

Families this actor is known to deploy, with IOCs and behavior.

Exploited CVEs

CVEs this actor has used in known campaigns.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Observables

Domains, IPs, and hashes tied to this actor, refreshed continuously.