Malware

OnionDrop

For your environment

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MITRE ATT&CK

Techniques & procedures

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

Execution

1 technique

T1574.001DLLEvidence1

The loader employs advanced evasion techniques, including DLL sideloading, layered decoding and decryption, dynamic API resolution, anti-analysis mechanisms, and shellcode execution through Windows Thread Pool callbacks...

Privilege Escalation

1 technique

T1055Process InjectionEvidence1

Stealth

4 techniques

T1055Process InjectionEvidence1

T1140Deobfuscate/Decode Files or InformationEvidence1

The loader employs advanced evasion techniques, including DLL sideloading, layered decoding and decryption, dynamic API resolution, anti-analysis mechanisms...

T1497Virtualization/Sandbox EvasionEvidence1

The loader employs advanced evasion techniques, including DLL sideloading, layered decoding and decryption, dynamic API resolution, anti-analysis mechanisms...

T1574.001DLLEvidence1

Discovery

1 technique

T1497Virtualization/Sandbox EvasionEvidence1

The loader employs advanced evasion techniques, including DLL sideloading, layered decoding and decryption, dynamic API resolution, anti-analysis mechanisms...

Command and Control

1 technique

T1105Ingress Tool TransferEvidence1

OnionDrop is a sophisticated multi-stage malware loader designed to deliver InfoStealers such as LegionLoader (CurlyGate), CGrabber, and Vidar Stealer at scale.

INDICATORS OF COMPROMISE

IOCs tracked for this family

9 indicators attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.

View more in app

Hashes

9 tracked

File hashes (MD5, SHA-1, SHA-256) from samples and reports.

TypeValueLatest sighting

hash.sha256●●●●●●●●●●●●View more in apptoday

ACTIVITY FEED

Recent activity

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

1 SOURCESView more in app

gurucul threat researchNews

Jun 12, 2026

Dissecting OnionDrop: Commoditized Loader with Nation-State-Grade Evasion | Community Portal | Gurucul

A sophisticated multi-stage malware loader used to deliver credential-stealing payloads at scale. It uses DLL sideloading, layered decoding and decryption, dynamic API resolution, anti-analysis mechanisms, and shellcode execution via Windows Thread Pool callbacks to evade detection and complicate analysis.

What this page doesn’t show

The version that knows your environment.

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IOC matching9

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

Threat actor attribution

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 mapping5

Every documented technique, ranked by evidence weight.

Researcher chatter

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