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high malicious update chromeedge

RedDirection

Legitimate, long-clean Chrome and Edge extensions turned malicious via routine auto-updates. Koi found 18 (~2.3M users); Spin.AI expanded the same campaign to 36 extensions and ~16.5M users.

Disclosed July 8, 2025
Blast radius ~16.5M users
Status delisted
STIX 2.1 under our terms, no commercial use

Overview

RedDirection weaponized previously-clean browser extensions by pushing malware in routine version updates. The extension code was clean for years before the malicious update landed on the existing install base.

Payload

Captured the URL of every page visited and exfiltrated it with a unique tracking ID to a C2 server, enabling browser hijacking, redirection to attacker-controlled sites, and credential theft via fake banking pages.

IOC note

No file hashes were published for this campaign — only extension IDs and install counts. The exact malicious version per extension was not disclosed (malware was injected across updates), so versions are left open.

Affected extensions (36)

NameStoreIDMalicious versionArchived
2048 Game
View analysis
chromeiabflonngmpkalkpbjonemaamlgdghea—no
Adblock Unlimited - Adblocker
View analysis
chromejiaopkfkampgnnkckajcbdgannoipcne—no
Image Downloader - Save pictures
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chromedaeljdgmllhgmbdkpgnaojldjkdgkbjg—yes
Web Music Downloader
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chromedmbjkidogjmmlejdmnecpmfapdmidfjg—no
Super Mario Bros Game
View analysis
chromepegfdldddiilihjahcpdehhhfcbibipg—no
Video downloader - download any video
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chromekfpgookelklhphhnihipmknjdgbeecgj—no
Screen Capture
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chromepmnphobdokkajkpbkajlaiooipfcpgio—no
Dictionary all over with Synonyms
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chromeahjhlnckcgnoikkfkfnkbfengklhglpg—no
Multi Chat - Messenger for WhatsApp
View analysis
chromedllplfhjknghhdneiblmkolbjappecbe—yes
Video Downloader Online
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chromejglemppahimembneahjbkhjknnefeeio—no
PiP (Picture in picture)
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chromenalkmonnmldhpfcpdlbdpljlaajlaphh—yes
Mute Tab - Silent in a click
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chromeinhefjomnpfkkegfklclbjhkifmpkkmn—no
Dark Mode for Chrome
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chromejhhjdfldilccfllhlbjdlhknlfbhpgeg—no
Good Video Downloader
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chromemhpcabliilgadobjpkameggapnpeppdg—no
Flash Player Enabler
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chromeeplfglplnlljjpeiccbgnijecmkeimed—no
Auto HD & Additions for Youtube
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chromelagdcjmbchphhndlbpfajelapcodekll—no
What Font - find font
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chromeacpcapnaopbhbelhmbbmppghilclpkep—no
Floating Video with Playback Controls
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chromepnanegnllonoiklmmlegcaajoicfifcm—yes
Emoji keyboard online
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chromekgmeffmlnkfnjpgmdndccklfigfhajen—no
Free Weather Forecast
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chromedpdibkjjgbaadnnjhkmmnenkmbnhpobj—no
Video Speed Controller - Video manager
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chromegaiceihehajjahakcglkhmdbbdclbnlf—no
Unlock Discord - VPN Proxy
View analysis
chromemlgbkfnjdmaoldgagamcnommbbnhfnhf—no
Dark Theme - Dark Reader for Chrome
View analysis
chromeeckokfcjbjbgjifpcbdmengnabecdakp—no
Volume Max - Ultimate Sound Booster
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chromemgbhdehiapbjamfgekfpebmhmnmcmemg—no
Unblock TikTok
View analysis
chromecbajickflblmpjodnjoldpiicfmecmif—no
Unlock YouTube VPN
View analysis
chromepdbfcnhlobhoahcamoefbfodpmklgmjm—no
Color Picker, Eyedropper - Geco
View analysis
chromeeokjikchkppnkdipbiggnmlkahcdkikp—no
Weather
chromeihbiedpeaicgipncdnnkikeehnjiddck—no
Unlock TikTok
edgejjdajogomggcjifnjgkpghcijgkbcjdi—no
Volume Booster - Increase your sound
edgemmcnmppeeghenglmidpmjkaiamcacmgm—no
Web Sound Equalizer
edgeojdkklpgpacpicaobnhankbalkkgaafp—no
Header Value
edgelodeighbngipjjedfelnboplhgediclp—no
Flash Player - games emulator
edgehkjagicdaogfgdifaklcgajmgefjllmd—no
Youtube Unblocked
edgegflkbgebojohihfnnplhbdakoipdbpdm—no
SearchGPT - ChatGPT for Search Engine
edgekpilmncnoafddjpnbhepaiilgkdcieaf—no
Unlock Discord
edgecaibdnkmpnjhjdfnomfhijhmebigcelo—no

Indicators of compromise (1)

domainadmitclick.netC2 / URL exfil + redirect

Sources