Malware

Xenostealer

For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

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MITRE ATT&CK

Techniques & procedures

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

Execution

1 technique

T1559.001Component Object ModelEvidence1

METASTEALER creates an instance of GoogleChromeElevationService through COM and invokes DecryptData. XENOSTEALER's injected code also calls DecryptData from GoogleChromeElevationService.

Privilege Escalation

1 technique

T1055Process InjectionEvidence1

XENOSTEALER launches Chrome.exe and injects code using SharpInjector, passing the encrypted key as a parameter; the injected code calls GoogleChromeElevationService DecryptData.

Stealth

1 technique

T1055Process InjectionEvidence1

XENOSTEALER launches Chrome.exe and injects code using SharpInjector, passing the encrypted key as a parameter; the injected code calls GoogleChromeElevationService DecryptData.

Credential Access

2 techniques

T1539Steal Web Session CookieEvidence1

Infostealers implement bypasses around Chrome Application-Bound Encryption to retrieve cookie data; STEALC, METASTEALER, PHEMEDRONE, XENOSTEALER, and LUMMA recover cookies in plaintext.

T1555.003Credentials from Web BrowsersEvidence1

The malware accesses Chrome's Cookies SQLite database and profile Local State or LocalPrefs.json files, including encrypted_key and app_bound_encrypted_key values.

INDICATORS OF COMPROMISE

IOCs tracked for this family

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

View more in app

Hashes

1 tracked

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

TypeValueLatest sighting

hash.sha256●●●●●●●●●●●●View more in app2 years ago

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

ontinue blogNews

Jun 1, 2026

Ontinue breaks down a fake claude code installer

Referenced only as a comparison family that did not technically match the observed sample.

elastic security labsNews

Oct 28, 2024

Katz and Mouse Game: MaaS Infostealers Adapt to Patched Chrome Defenses

An open-source infostealer that extracts Chrome's app_bound_encrypted_key, launches Chrome, injects code using SharpInjector, and calls GoogleChromeElevationService DecryptData from within the Chrome process to obtain the decrypted key.

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 matching1

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 mapping4

Every documented technique, ranked by evidence weight.

Researcher chatter

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

Back to malware

Malware

Xenostealer

For your environment

Hunt this family in your stack

Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.

Start free trial

MITRE ATT&CK

Techniques & procedures

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

Execution

1 technique

T1559.001Component Object ModelEvidence1

METASTEALER creates an instance of GoogleChromeElevationService through COM and invokes DecryptData. XENOSTEALER's injected code also calls DecryptData from GoogleChromeElevationService.

Privilege Escalation

1 technique

T1055Process InjectionEvidence1

XENOSTEALER launches Chrome.exe and injects code using SharpInjector, passing the encrypted key as a parameter; the injected code calls GoogleChromeElevationService DecryptData.

Stealth

1 technique

T1055Process InjectionEvidence1

XENOSTEALER launches Chrome.exe and injects code using SharpInjector, passing the encrypted key as a parameter; the injected code calls GoogleChromeElevationService DecryptData.

Credential Access

2 techniques

T1539Steal Web Session CookieEvidence1

Infostealers implement bypasses around Chrome Application-Bound Encryption to retrieve cookie data; STEALC, METASTEALER, PHEMEDRONE, XENOSTEALER, and LUMMA recover cookies in plaintext.

T1555.003Credentials from Web BrowsersEvidence1

The malware accesses Chrome's Cookies SQLite database and profile Local State or LocalPrefs.json files, including encrypted_key and app_bound_encrypted_key values.

INDICATORS OF COMPROMISE

IOCs tracked for this family

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

View more in app

Hashes

1 tracked

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

TypeValueLatest sighting

hash.sha256●●●●●●●●●●●●View more in app2 years ago

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

ontinue blogNews

Jun 1, 2026

Ontinue breaks down a fake claude code installer

Referenced only as a comparison family that did not technically match the observed sample.

elastic security labsNews

Oct 28, 2024

Katz and Mouse Game: MaaS Infostealers Adapt to Patched Chrome Defenses

What this page doesn’t show

The version that knows your environment.

Start free trial

IOC matching1

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 mapping4

Every documented technique, ranked by evidence weight.

Researcher chatter

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