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🇮🇷 IR1 malware family

DEV-0270

Also known asdev_0270

DEV-0270 is a Microsoft-tracked subgroup associated in the provided content with Phosphorus, an Iranian threat cluster. The content states that Microsoft disclosed DEV-0270 conducting ransomware attacks using living-off-the-land binaries such as BitLocker. DEV-0270 is also listed among groups with a history of targeting Israel. The supporting content further places this activity in the broader context of Iranian government-linked operations, noting overlap among Iranian clusters including TA453, APT42, Charming Kitten, and Phosphorus, but only directly identifies DEV-0270 as a Phosphorus subgroup. High-confidence aliases directly mentioned for this actor are limited to DEV-0270.

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OPERATIONAL PROFILE

Targeting

Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.

Where they're from

Attributed origin per open-source reporting.

  • IR
MITRE ATT&CK

Tradecraft

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

5 of 15 tactics7 techniques×N= number of intelligence reports citing this technique
MITRE ATT&CK
TA0043
Reconnaissance
1 technique
T1595
Active Scanning
TA0001
Initial Access
2 techniques
T1133
External Remote Services
T1190
Exploit Public-Facing Application
TA0003
Persistence
1 technique
T1133
External Remote Services
TA0011
Command and Control
1 technique
T1090
Proxy
T1090.003
Multi-hop Proxy
TA0040
Impact
1 technique
T1486
Data Encrypted for Impact
ARSENAL

Associated malware families

1 malware family attributed to this actor across reporting.

FamilyContextEvidenceLast seen
BitLockerLast week, Microsoft took the wraps off a string of ransomware attacks mounted by a Phosphorus subgroup dubbed DEV-0270 using living-off-the-land binaries such as BitLocker.1May 26, 2026
ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app
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Target overlap

Match sector + geo + tech-stack targeting against your real footprint.

Tradecraft mapping5

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

Malware arsenal1

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.