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 seenAug 2025
Last seenJun 2026
Avg ransom
Payment rate
Statusactive
Sophistication0
Last updatedJun 18, 2026

Recent activity

Monthly attack count for SilentRansomGroup in the selected period

58Total attacks
23peak in Apr
5.8avg / month
AugSepOctNovDecFebMarAprMayJun06121824

Intelligence

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

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  209. e209ba8640f80301abd4899427c17f4f869b665975b8001977dbffdf87968c96
  210. 4a0b8e9a56876c11c667b9ce77b371d2c6d07891
  211. f20d34438c0e5311d6eaaea34c81e75f69f834ba476d33802efa1872a16b5260
  212. 577e077b6e2ed893bb8b5e6ce849f54d02e47e7389042b0728940d2404f46579
  213. ef7047a0ca52ef7f4d20281b50207f71
  214. 6c34f4f29cb3d8cc8f55a707d255de50caa67e8f
  215. 29f6a31e1c2158d375d572aa74cacefa526d8ec8e788487f205cf0b65b98c975
  216. 393d602fea1d98dbf9b83a25afc87766ccd272b1
  217. 888d3a76d4a507159ab27eac808da6a9
  218. 37ec3d5be7b535a8a31001815ab275a489e302f5
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
He..t S..t.Technology
Unknown
3 days ago
Fox Rothschild LLPfoxrothschild.comUS United StatesProfessional Services
Unknown
22 days ago
Barclay DamonUS United StatesProfessional Services
Unknown
about 1 month ago
Porter WrightUS United StatesProfessional Services
Unknown
about 1 month ago
Marshall DenneheyUS United StatesProfessional Services
Unknown
about 1 month ago
P...er W...t
Claimed
about 1 month ago
Farella Braun + Martel LLPUS United StatesProfessional Services
Claimed
about 1 month ago
Sandberg PhoenixSE SwedenProfessional Services
Unknown
about 1 month ago
Ropers Majeski PC InformationProfessional Services
Unknown
about 1 month ago
Farella Braun + Martel LLP InformationUS United StatesProfessional Services
Unknown
about 1 month ago
Sandberg Phoenix InformationUS United StatesProfessional Services
Unknown
about 1 month ago
Ropers MajeskiUS United StatesProfessional Services
Unknown
about 1 month ago
Floyd Skeren Manukian Langevin, LLPfloydskerenlaw.comUS United StatesProfessional Services
Claimed
about 2 months ago
Floyd Skeren Manukian Langevin, LLP InformationUS United StatesProfessional Services
Claimed
about 2 months ago
Chartwell LawUS United StatesProfessional Services
Claimed
about 2 months ago
Jackson LewisUS United StatesProfessional Services
Claimed
about 2 months ago
Rutan & Tucker, LLPUS United StatesProfessional Services
Claimed
about 2 months ago
R... T...
Claimed
about 2 months ago
Fagen Friedman & Fulfrost LLPUS United StatesProfessional Services
Claimed
2 months ago
F...n F...n & F... LLPUS United StatesProfessional Services
Claimed
2 months ago

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