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Topic

Malware loaders and delivery chains

Multi-stage loaders that sit between initial access and final payload, reused across otherwise unrelated campaigns.

Current stories

securityOne report1 publisher

AvisLoader receives its commands over Tox, a peer-to-peer network that does not depend on a fixed domain

Varonis Threat Labs found AvisLoader, a Windows loader whose C2 runs over the Tox P2P network with no fixed domain. Varonis says that makes domain takedowns harder, though the Tox connections stay observable next to the loader's activity on the host.

Reality

Evidence68
Adoption
Not scored
Hype gap−5
Incentives
Not scored
Confidence65
securityOne report1 publisher

Sophos ties Windows Terminal ClickFix lures to a tunneling campaign running since March

Sophos linked ClickFix lures that open Windows Terminal, not the Run dialog, to STAC4924, a campaign it has tracked since at least March. The intrusions plant Lorem Ipsum Loader and a Python reverse-tunnel implant that relays attacker traffic through the victim host.

Reality

Evidence62
Adoption
Not scored
Hype gap−5
Incentives
Not scored
Confidence58
securityOne report1 publisher

2CLoader slips Vidar, Remus and XWorm past EDR with Hell's Gate indirect syscalls

Zscaler ThreatLabz says 2CLoader, found in August 2026, drops the Vidar and Remus stealers and XWorm RAT while routing six ntdll calls around EDR's inline hooks. Detection tuned only to those payloads misses the loader stage.

Publishers:zscaler.com

Reality

Evidence62
Adoption
Not scored
Hype gap+10
Incentives30
Confidence58
securityOne report1 publisher

A Windows loader for sale on a crime forum takes its orders over Tox peer-to-peer messaging

AvisLoader statically links the reference Tox client, so its operator keeps the same identity after moving to a new server. The ClickFix page and Cloudflare tunnel that deliver it are still ordinary takedown targets.

Publishers:varonis.com

Reality

Evidence66
Adoption20
Hype gap+18
Incentives62
Confidence57
securityOne report1 publisher

CL-CRI-1171 sold malware installs through YouTube gaming videos for at least two years

Palo Alto Networks Unit 42 says the pay-per-install marketplace fed gamers and professionals into the same loader, OfferLoader, and its trojanized installers reached corporate endpoints at critical infrastructure and government entities.

Reality

Evidence45
Adoption58
Hype gap+10
Incentives70
Confidence52
investOne report1 publisher

Conti's $150m in victim payouts produces one four-year sentence

The Justice Department sentenced Oleksii Lytvynenko to four years over Conti, the ransomware the FBI ties to more than $150m in victim payouts as of January 2022 and to attacks in 47 states. Four others stand charged in the same district.

Publishers:justice.gov

Reality

Evidence64
Adoption58
Hype gap+28
Incentives74
Confidence66
securityOne report1 publisher

Unit 42 pulled a two-year pay-per-install marketplace out of two dismissible adware tickets

Unit 42's CL-CRI-1171 sold installs to other criminals for at least two years, funneling gamers through YouTube and professionals through poisoned search results, while its loader stayed unnamed because nobody escalated it.

Reality

Evidence70
Adoption58
Hype gap+14
Incentives74
Confidence60
securityOne report1 publisher

PavinLoader: the lures keep changing, the MSBuild stage does not

Malwarebytes traces one loader through ClickFix prompts, malicious game installs and fake software downloads. The shared part is a .csproj-to-MSBuild handoff and a blockchain lookup for C2.

Publishers:malwarebytes.com

Reality

Evidence66
Adoption52
Hype gap−8
Incentives58
Confidence61