Chimera is a suspected China-based threat group that has been active since at least 2018 targeting the semiconductor industry in Taiwan as well as data from the airline industry.[1][2]
59
TechniquesTop 10%
14
TacticsTop 6%
6
Tools & malware67th pct
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
Chimera has gathered the SYSTEM registry and ntds.dit files from target systems.3Chimera specifically has used the NtdsAudit tool to dump the password hashes of domain users via msadcs.exe "NTDS.dit" -s "SYSTEM" -p RecordedTV_pdmp.txt --users-csv RecordedTV_users.csv and used ntdsutil to copy the Active Directory database.4
Chimera has queried Registry keys using <code>reg query \\<host>\HKU\<SID>\SOFTWARE\Microsoft\Terminal Server Client\Servers</code> and <code>reg query \\<host>\HKU\<SID>\Software\Microsoft\Windows\CurrentVersion\Internet Settings</code>.6
Reach is how much of ATT&CK this group touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 176 ATT&CK groups only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
Techniques59Top 10%
90th percentile · 90% of 176 ATT&CK groups have this many Enterprise techniques or fewer.
Tactics14Top 6%
94th percentile · 94% of 176 ATT&CK groups have this many tactics spanned or fewer.
Tools & malware667th pct
67th percentile · 67% of 176 ATT&CK groups have this many tools and malware or fewer.
Campaigns089% tie · 4 values
89% of the population shares a single value across only 4 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
Rules / technique20med52nd pct
52nd percentile · 52% of 176 ATT&CK groups have this many detection rules per technique or fewer.
Tests / technique6med
Chimera detections G0114
1673 distinct rules cover the 59 techniques recorded for this group. 1083 Sigma · 590 Splunk.
55 covered by at least one rule4 with no coverage1673 distinct rules in total
Showing 1-50 of 1,600+ rules
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Title
Description
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Event
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MITRE ATT&CK
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Created
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ID
Refs
Splunk
The following analytic detects the execution of 7z or 7za processes with command lines pointing to SMB network shares. (...)
Mark Morowczynski '@markmorow', MikeDuddington, '@dudders1', Tim Shelton
2022-08-11
2022-08-18
6f583da0-3a90-4566-a4ed-83c09fe18bbf
This method uses uncommon error codes on failed logons to determine suspicious activity and tampering with accounts that have been disabled or somehow restricted.
The following analytic detects suspicious modifications to firewall rule registry settings that allow inbound traffic on specific ports with a public profile. (...)
Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'
2022-06-01
—
248649b7-d64f-46f0-9fb2-a52774166fb5
Resource owner password credentials (ROPC) should be avoided if at all possible as this requires the user to expose their current password credentials to the application directly. (...)
Mark Morowczynski '@markmorow', Bailey Bercik '@baileybercik'
2022-06-01
—
55695bc0-c8cf-461f-a379-2535f563c854
Detects when AppLocker "Audit only" enforcement mode reports that an Application, DLL, Script, MSI, or Packaged-App would have been blocked if AppLocker "Enforce rules" enforcement mode was enabled.
The following analytic detects the execution of tools commonly exploited by cybercriminals, such as those used for unauthorized access, network scanning, privilege escalation, password dumping or data exfiltration. (...)
Identifies two sign-ins originating from geographically distant locations, where at least one of the locations may also be atypical for the user, given past behavior.