SI

Silentransomgroup Ransomware

Active

Threat actor group tracked in the global ransomware database · Last disclosure: Sep 17, 2026

Ransomware-as-a-Service (RaaS) Double Extortion Target: Business Services
146
Total Victims
0.7% of all tracked
5
Countries Targeted
9
Sectors Targeted
2025
First Seen

ThreatAI Analysis

Compiled from the ransomware.live profile for Silentransomgroup and from this database. Figures and technique mappings are quoted from the source data, not inferred.

Silentransomgroup, an ex-Conti operation, has ransacked 145 victims across five countries, striking fear in sectors like business services and financials.

Who Silentransomgroup is

a former Conti team

Recorded activity

Disclosures attributed to Silentransomgroup in this database run from May 2025 to September 2026, totalling 146 victims — 0.7% of everything tracked here. Silentransomgroup has listed victims in 5 countries in this database, most often United States, followed by Germany and Canada. The sectors appearing most in its listings are Business Services, Financial Services, Professional Services.

YARA detection rules

SilentRansomGroup.yar
/*
Silent Ransom Group (Luna Moth affiliate)
*/

rule SilentRansomGroup_Note
{
    meta:
        author = "ransomware.live"
        family = "ransomware.silentransomgroup"
        description = "Detects Silent Ransom Group note"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $s1 = "Silent Ransom" ascii nocase
        $s2 = "SilentRansom" ascii nocase
        $s3 = "Luna Moth" ascii nocase

    condition:
        any of them
}

Community-contributed rules for Silentransomgroup, reproduced as published. Test them against your own corpus before relying on them: rule quality and false-positive behaviour vary by author.

Threat Actor Analysis

Silentransomgroup is a ransomware threat group that has disclosed 146 victims in publicly accessible leak site data, representing 0.7% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Silentransomgroup in our dataset dates to May 2025.

Geographically, Silentransomgroup has targeted organisations in 5 countries. The most frequently targeted nation is United States with 114 victim organisations. Other heavily targeted nations include Germany, Canada, Russia.

Industry-wise, Silentransomgroup shows a concentration in the Business Services, Financial Services, Professional Services sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime — conditions that increase ransom payment likelihood.

Like most modern ransomware operations, Silentransomgroup likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.

Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The table below lists the 100 most recent of the 146 disclosures we hold for this group; use the link beneath it to page through all of them.

Recent Victim Disclosures (showing 100 of 146)

# Organization Country Sector Date
1 C... Sep 17, 2026
2 H... C... Sep 4, 2026
3 A...en A...en 🇩🇪 Germany Sep 3, 2026
4 Katten Muchin Rosenman katten.com 🇺🇸 United States Professional Services Sep 3, 2026
5 P... S... Sep 3, 2026
6 G... ...g Sep 2, 2026
7 Greenberg Traurig 🇺🇸 United States Professional Services Sep 2, 2026
8 S... M... Sep 2, 2026
9 Holland & Knight 🇺🇸 United States Professional Services Sep 1, 2026
10 G... T... Aug 27, 2026
11 Ne...n M... Aug 27, 2026
12 A... Aug 26, 2026
13 C... O... Aug 26, 2026
14 H... K... Aug 26, 2026
15 H... L... Aug 26, 2026
16 K... M... Aug 26, 2026
17 N... M... Aug 26, 2026
18 Q... E... Aug 26, 2026
19 S... P... Aug 26, 2026
20 D... Aug 20, 2026
21 T... P... L... Aug 18, 2026
22 Troutman Pepper Locke 🇺🇸 United States Professional Services Aug 18, 2026
23 Reminger reminger.com 🇩🇪 Germany Professional Services Aug 13, 2026
24 R... D... Aug 12, 2026
25 R...er R...er Aug 12, 2026
26 Riker Danzig LLP riker.com 🇺🇸 United States Professional Services Aug 12, 2026
27 Riker Danzig Scherer Hyland & Perretti riker.com Professional Services Aug 12, 2026
28 Mayer Brown 🇺🇸 United States Professional Services Aug 7, 2026
29 Moses & Singer mosessinger.com 🇺🇸 United States Professional Services Aug 2, 2026
30 He..t S..it. Jun 17, 2026
31 He..t S..t. Jun 16, 2026
32 Fox Rothschild LLP foxrothschild.com 🇺🇸 United States Business Services May 28, 2026
33 Barclay Damon barclaydamon.com 🇺🇸 United States Business Services May 19, 2026
34 Marshall Dennehey marshalldennehey.com 🇺🇸 United States Business Services May 12, 2026
35 Porter Wright porterwright.com 🇺🇸 United States Business Services May 12, 2026
36 Farella Braun + Martel LLP Information 🇺🇸 United States Business Services May 6, 2026
37 Ropers Majeski ropers.com 🇺🇸 United States Business Services May 6, 2026
38 Sandberg Phoenix Information sandbergphoenix.com 🇺🇸 United States Business Services May 6, 2026
39 Floyd Skeren Manukian Langevin, LLP Information Business Services Apr 28, 2026
40 Floyd Skeren Manukian Langevin, LLP floydskerenlaw.com 🇺🇸 United States Business Services Apr 28, 2026
41 Chartwell Law chartwelllaw.com 🇬🇧 United Kingdom Business Services Apr 23, 2026
42 Jackson Lewis jacksonlewis.com 🇺🇸 United States Business Services Apr 22, 2026
43 Rutan & Tucker, LLP rutan.com 🇺🇸 United States Business Services Apr 21, 2026
44 Fagen Friedman & Fulfrost LLP f3law.com 🇺🇸 United States Business Services Apr 17, 2026
45 Harris Beach Murtha harrisbeachmurtha.com 🇺🇸 United States Business Services Apr 15, 2026
46 T..t Ste..ius & Ho.i.ter LLP 🇺🇸 United States Business Services Apr 13, 2026
47 Goulston & Storrs goulstonstorrs.com 🇺🇸 United States Business Services Apr 10, 2026
48 T..t Ste..ius & Ho..ter LLP 🇺🇸 United States Business Services Apr 10, 2026
49 Cox, Castle & Nicholson LLP coxcastle.com 🇺🇸 United States Business Services Apr 9, 2026
50 Bo.. and Br..e 🇺🇸 United States Apr 3, 2026
51 Ph..s 🇺🇸 United States Apr 1, 2026
52 Plunkett Cooney plunkettcooney.com 🇺🇸 United States Business Services Apr 1, 2026
53 Jones Day jonesday.com 🇺🇸 United States Business Services Mar 30, 2026
54 C..er CPA 🇺🇸 United States Financial Services Mar 26, 2026
55 Phelps Dunbar phelps.com 🇺🇸 United States Business Services Mar 22, 2026
56 Wood Smith Henning & Berman LLP wshblaw.com 🇺🇸 United States Business Services Mar 18, 2026
57 Singleton Schreiber singletonschreiber.com 🇺🇸 United States Business Services Mar 16, 2026
58 HEMIC - Hawaii Employers' Mutual Insurance Co hemic.com 🇺🇸 United States Financial Services Feb 27, 2026
59 Nations Financial Group Inc nationsfg.com 🇺🇸 United States Financial Services Feb 27, 2026
60 Plaza Home Mortgage plazahomemortgage.com 🇺🇸 United States Financial Services Feb 27, 2026
61 Two River Group Holdings LLC tworiver.com 🇺🇸 United States Financial Services Feb 27, 2026
62 Orrick, Herrington & Sutcliffe orrick.com 🇺🇸 United States Business Services Feb 23, 2026
63 Marshall & Stevens, Valuescope 🇺🇸 United States Financial Services Feb 17, 2026
64 Marshall & Stevens marshall-stevens.com 🇺🇸 United States Financial Services Feb 16, 2026
65 Barrett Financial Group barrettfinancial.com 🇺🇸 United States Financial Services Feb 9, 2026
66 Fish & Richardson Overview Metrics fr.com 🇺🇸 United States Business Services Dec 7, 2025
67 Mintzer Sarowitz Zeris Ledva & Meyers mszwlaw.com 🇺🇸 United States Business Services Dec 7, 2025
68 Carlton Fields carltonfields.com 🇺🇸 United States Business Services Nov 26, 2025
69 Mitchell Silberberg & Knupp msk.com 🇺🇸 United States Business Services Nov 25, 2025
70 MSK 🇷🇺 Russia Business Services Nov 25, 2025
71 Hall Estill hallestill.com 🇺🇸 United States Financial Services Oct 24, 2025
72 Confie confie.com 🇺🇸 United States Financial Services Oct 10, 2025
73 Gordon Rees Scully Mansukhani LLP grsm.com 🇺🇸 United States Business Services Sep 7, 2025
74 Moore & Van Allen danpatrick.com 🇺🇸 United States Financial Services Sep 3, 2025
75 44North 44northbenefits.com 🇺🇸 United States Financial Services May 6, 2025
76 ADM LAW admlaw.com 🇺🇸 United States Business Services May 6, 2025
77 Advantage Group GA advantagegroupga.com 🇺🇸 United States Business Services May 6, 2025
78 AG Adjustment agadjustments.com 🇺🇸 United States Business Services May 6, 2025
79 AGT Slots ainsworth.com 🇺🇸 United States Hospitality and Tourism May 6, 2025
80 Anders CPAs + Advisors anderscpa.com 🇺🇸 United States Financial Services May 6, 2025
81 ATLAS CPAs & Advisors atlascpas.com 🇺🇸 United States Financial Services May 6, 2025
82 Ball Eggleston Law Firm ballegglestonlaw.com 🇺🇸 United States Business Services May 6, 2025
83 Barst Mukamal & Kleiner barstlaw.com 🇺🇸 United States Business Services May 6, 2025
84 Bass , Berry & Sims PLC bassberry.com 🇺🇸 United States Financial Services May 6, 2025
85 Baxter Baker Sidle Conn & Jones baxterbaker.com 🇺🇸 United States Financial Services May 6, 2025
86 Black , Bashor & Porsch bbpaccounting.com 🇺🇸 United States Financial Services May 6, 2025
87 Cantey Hanger LLP canteyhanger.com 🇺🇸 United States Business Services May 6, 2025
88 Chicago Atlantic Group chicagoatlantic.com 🇺🇸 United States Financial Services May 6, 2025
89 Colucci Law Group coluccilawgroup.com 🇺🇸 United States Business Services May 6, 2025
90 Cors & Bassett corsbassett.com 🇺🇸 United States Business Services May 6, 2025
91 CRC Group 🇺🇸 United States Financial Services May 6, 2025
92 Cross Valley FCU crossvalleyfcu.org 🇺🇸 United States Financial Services May 6, 2025
93 Davenport & Company LLC davenport.com 🇺🇸 United States Financial Services May 6, 2025
94 Dean & Fulkerson dflaw.com 🇺🇸 United States Business Services May 6, 2025
95 Elmore & Bunn chadwickwashington.com 🇺🇸 United States Business Services May 6, 2025
96 Essex Property Trust essexproperty.com 🇺🇸 United States Financial Services May 6, 2025
97 EW Smith Insurance Agency ewsmithinsurance.com 🇺🇸 United States Financial Services May 6, 2025
98 Fenwick fenwick.com 🇺🇸 United States Business Services May 6, 2025
99 Fenwick & West LLP fenwick.com 🇺🇸 United States Business Services May 6, 2025
100 First Financial Equity ffec.com 🇺🇸 United States Financial Services May 6, 2025

Frequently Asked Questions

What is Silentransomgroup ransomware?

Silentransomgroup is a ransomware threat group that has claimed 146 victims since its first known activity in May 2025. The group operates by infiltrating target networks, exfiltrating data, encrypting files, and threatening to publish stolen data on a dark web leak site if the ransom is not paid.

How many victims has Silentransomgroup attacked?

Silentransomgroup has claimed 146 victims in our database, representing 0.7% of all tracked ransomware attacks. The most targeted countries are United States, Germany, Canada, Russia.

Which countries does Silentransomgroup target?

Silentransomgroup has attacked organizations in 5 countries. The top targeted countries are: United States, Germany, Canada, Russia.

Which industries does Silentransomgroup target?

Silentransomgroup most frequently targets the Business Services, Financial Services, Professional Services sectors based on victim disclosures in our database.

Is Silentransomgroup still active?

Silentransomgroup's most recent victim disclosure in our database was on September 17, 2026. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.