Cleaver has been known to dump credentials using Mimikatz and Windows Credential Editor.3
group
Cleaver G0003
- Created
- 31 May 2017
- Last modified
- 31 July 2026
- Aliases
- Cleaver · Threat Group 2889 · TG-2889
Cleaver is a threat group that has been attributed to Iranian actors and is responsible for activity tracked as Operation Cleaver. [1] Strong circumstantial evidence suggests Cleaver is linked to Threat Group 2889 (TG-2889). [2]
5
TechniquesBottom 16%
3
TacticsBottom 13%
4
Tools & malware55th pct
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference G0003
Cleaver has used custom tools to facilitate ARP cache poisoning.4
Cleaver has created fake LinkedIn profiles that included profile photos, details, and connections.5
Cleaver has created customized tools and payloads for functions including ARP poisoning, encryption, credential dumping, ASP.NET shells, web backdoors, process enumeration, WMI querying, HTTP and SMB communications, network interface sniffing, and keystroke logging.6
Cleaver has obtained and used open-source tools such as PsExec, Windows Credential Editor, and Mimikatz.7
Standing G0003
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
Techniques5Bottom 16%
16th percentile · 84% of 176 ATT&CK groups have more Enterprise techniques.
Tactics3Bottom 13%
13th percentile · 87% of 176 ATT&CK groups have more tactics spanned.
Tools & malware455th pct
55th percentile · 55% 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 / technique12med26th pct
26th percentile · 74% of 176 ATT&CK groups have more detection rules per technique.
Tests / technique0med
Detection coverage G0003
118 distinct rules cover the 5 techniques recorded for this group. 99 Sigma · 19 Splunk.
4 covered by at least one rule1 with no coverage118 distinct rules in total
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