HOMETHREATSCIRCUS SPIDER
APT / THREAT GROUP💰 FINANCIALHIGH

CIRCUS SPIDER

🇷🇺Russia-attributed
1
campaigns
1
aliases
Last seen:Mar 17, 2026

Intelligence Profile

According to Crowdstrike, the NetWalker ransomware is being developed and maintained by a Russian-speaking actor designated as CIRCUS SPIDER. Initially discovered in September 2019and havinga compilation timestamp dating back to 28 August 2019, NetWalker has been found to be used in Big Game Hunting (BGH)-style operations while also being distributed via spam. CIRCUS SPIDER is advertising NetWalkeras being a closed-affiliate program,and verifies applicants before they are being accepted as an affiliate. The requirements rangefrom providing proof of previous revenue in similar affiliates programs, experience in the field and what type of industry the applicantis targeting.

Threat Analysis

CIRCUS SPIDER is a high-sophistication threat actor attributed to Russia, engaged in cyber operations with a primary motivation of financial.

Financially motivated threat actors like CIRCUS SPIDER prioritize monetary gain through methods such as ransomware deployment, banking trojans, cryptocurrency theft, BEC scams, or credential harvesting for resale on underground markets.

With high sophistication, CIRCUS SPIDER is capable of targeted intrusions using adapted commodity tools alongside custom implants, maintaining operational security and evading standard detection mechanisms.

Known Campaigns

CIRCUS SPIDER — Active Operations March 2026

CIRCUS SPIDER is a financial threat actor attributed to Russia. According to Crowdstrike, the NetWalker ransomware is being developed and maintained by a Russian-speaking actor designated as CIRCUS SPIDER. Initially discovered in September 2019and havinga compilation timestamp dating back to 28 August 2019, NetWalker has been found to be used...

ACTIVEMEDIUM2026

External References

Quick Facts

TypeAPT / Threat Group
Motivation💰 financial
Sophisticationhigh
Origin🇷🇺 Russia
Aliases1
SourceMalpedia

Also Known As

CIRCUS SPIDER

Research Links

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.