Intrusion setG0003

Cleaver

Also tracked as 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. Strong circumstantial evidence suggests Cleaver is linked to Threat Group 2889 (TG-2889).

Documented techniques: 5
Assessed origin: Iran
Basis: MITRE ATT&CK

How they break in

Techniques MITRE has documented this group using, grouped by the stage of an attack they belong to. This is the actionable half: each one is a behaviour you can look for in your own logs, and a control you can test.

resource development3

T1585.001 Social Media Accounts
T1587.001 Malware
T1588.002 Tool

credential access2

T1003.001 LSASS Memory
T1557.002 ARP Cache Poisoning

Malware

Families MITRE records this group deploying. Detection names for these are a reasonable place to start.

Net CrawlerTinyZBot

Tools

Legitimate or dual-use software the group is documented using. Most of it is software your own administrators use too, which is the point.

MimikatzPsExec