Ransomware Intelligence

SilentRansomGroup

Ransomware group profile

58Victims
RussiaSource country
100Impact score
Also Known As
UNC3753
Luna Moth
LeakedData
Chatty Spider

Description

Silent Ransom Group, also known as Luna Moth or Chatty Spider, is a cybercriminal organization that emerged as a splinter from the Conti ransomware syndicate. This group primarily focuses on data exfiltration through social engineering tactics, avoiding traditional ransomware methods. They utilize legitimate software for data theft, making detection challenging for conventional security measures.

Key insights

  • Gains initial access through targeted social engineering, particularly callback phishing and vishing.
  • Employs legitimate remote access tools for data exfiltration instead of traditional malware.
  • Threatens to publish stolen data on dark web leak sites if ransom demands are unmet.
  • Ransom amounts range from $1 million to $8 million, pressuring victims into negotiations.
  • Operates with a 'living off the land' approach to evade detection by traditional security solutions.
  • Targets a variety of sectors, particularly legal services and healthcare.

Threat Level & Status Breakdown

For SilentRansomGroup · Based on incidents in selected period

2.2threat level
Aggressiveness6/ 10
Lethality0/ 10
Criticality0.3/ 10

Status Breakdown

Claimed55.2%32
First seenJun 2025
Last seenMay 2026
Avg ransom
Payment rate
Statusactive
Sophistication0
Last updatedJun 2, 2026

Recent activity

Monthly attack count for SilentRansomGroup in the selected period

58Total attacks
23peak in Apr
5.8avg / month
↑ 10 vs first month
JunAugSepOctNovDecFebMarAprMay06121824

Intelligence

IOCs, YARA/Sigma rules, and related families for SilentRansomGroup

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View full IOC feed500 total

TTPs & Attack Vectors

Tools, initial access, and MITRE ATT&CK techniques for SilentRansomGroup

Other

T1071.001

T1071.001

T1071.002

T1071.002

T1046

T1046

T1021.001

T1021.001

T1566

T1566

T1609

T1609

T1083

T1083

T1562

T1562

T1550

T1550

T1490

T1490

T1486

T1486

T1078

T1078

Victims(58)

CompanyDomainCountryIndustryStatusDiscovered
Fox Rothschild LLPfoxrothschild.comUS United StatesProfessional Services
Unknown
6 days ago
Barclay DamonUS United StatesProfessional Services
Unknown
15 days ago
Porter WrightUS United StatesProfessional Services
Unknown
22 days ago
Marshall DenneheyUS United StatesProfessional Services
Unknown
22 days ago
P...er W...t
Claimed
26 days ago
Farella Braun + Martel LLPUS United StatesProfessional Services
Claimed
27 days ago
Sandberg PhoenixSE SwedenProfessional Services
Unknown
27 days ago
Ropers Majeski PC InformationProfessional Services
Unknown
28 days ago
Farella Braun + Martel LLP InformationUS United StatesProfessional Services
Unknown
28 days ago
Sandberg Phoenix InformationUS United StatesProfessional Services
Unknown
28 days ago
Ropers MajeskiUS United StatesProfessional Services
Unknown
29 days ago
Floyd Skeren Manukian Langevin, LLPfloydskerenlaw.comUS United StatesProfessional Services
Claimed
about 1 month ago
Floyd Skeren Manukian Langevin, LLP InformationUS United StatesProfessional Services
Claimed
about 1 month ago
Chartwell LawUS United StatesProfessional Services
Claimed
about 1 month ago
Jackson LewisUS United StatesProfessional Services
Claimed
about 1 month ago
Rutan & Tucker, LLPUS United StatesProfessional Services
Claimed
about 1 month ago
R... T...
Claimed
about 1 month ago
Fagen Friedman & Fulfrost LLPUS United StatesProfessional Services
Claimed
about 2 months ago
F...n F...n & F... LLPUS United StatesProfessional Services
Claimed
about 2 months ago
Harris Beach MurthaUS United StatesProfessional Services
Claimed
about 2 months ago

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