MalwareUsed by 1 actor

PteroSetup

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THREAT ACTORS

Groups observed using it

1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.

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Gamaredon Group

Also used is PteroSetup, an older Visual Basic Script (VBScript) weaponizer first detected in January 2021 and likely assumed to be discontinued. The tool scans USB and mapped network drives for legitimate installer files, and if found, replaces them with 7z self-extracting (SFX) archives containing the original installer and a malicious VBScript downloader.

via the hacker newsthehackernews.com

MITRE ATT&CK

Techniques & procedures

6 distinct techniques documented for this family, organized by ATT&CK tactic.

Initial Access

1 technique

T1091Replication Through Removable MediaEvidence1

...facilitate lateral movement by infecting USB drives and network drives with malicious LNK files

Execution

2 techniques

T1059.005Visual BasicEvidence2

PteroDum for fetching and executing VBScript payloads in memory... a malicious VBScript downloader

T1204.002Malicious FileEvidence1

To the victim, the file still appears legitimate, but running it launches both the expected installer and the malicious code.

Discovery

1 technique

T1135Network Share DiscoveryEvidence1

The tool scans USB and mapped network drives for legitimate installer files

Lateral Movement

2 techniques

T1091Replication Through Removable MediaEvidence1

...facilitate lateral movement by infecting USB drives and network drives with malicious LNK files

T1570Lateral Tool TransferEvidence2

Gamaredon's attacks are known to rely on weaponizers like PteroLNK and PteroPaste to facilitate lateral movement by infecting USB drives and network drives with malicious LNK files

Collection

1 technique

T1560Archive Collected DataEvidence1

...replaces them with 7z self-extracting (SFX) archives containing the original installer and a malicious VBScript downloader.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

the hacker newsNews

Jun 29, 2026

Gamaredon Expands Ukraine Attacks with New Malware and Cloud Service Abuse

An older Gamaredon VBScript weaponizer that scans USB and mapped network drives for legitimate installers and replaces them with trojanized 7z SFX archives containing the original installer plus a malicious VBScript downloader.

eset welivesecurity blogNews

Jun 25, 2026

Gamaredon in 2025: Leveraging tunnels, workers, dead drops, and new alliances

A VBScript weaponizer used for lateral movement. It scans fixed, removable, and network drives for installer-like executable files and replaces them with malicious self-extracting archives containing both the original installer and a malicious VBScript downloader.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets match these IOCs, which detections are missing, which campaigns to expect next, and what to do in the next 30 minutes.

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IOC matching

Match every observed IP, domain, and hash against your live telemetry.

Threat actor attribution1

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping6

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.