tool
Clambling S0660
- Type
- malware
- Platform
- Windows
- Created
- 12 November 2021
- Last modified
- 25 April 2025
Clambling is a modular backdoor written in C++ that has been used by Threat Group-3390 since at least 2017.[1]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0660
Clambling has the ability to enumerate Registry keys, including KEY_CURRENT_USER\Software\Bitcoin\Bitcoin-Qt\strDataDir to search for a bitcoin wallet.34
Clambling can enumerate the IP address of a compromised machine.56
The Clambling executable has been obfuscated when dropped on a compromised host.7
Clambling can identify the username on a compromised host.89
Clambling can inject into the svchost.exe process for execution.10
Standing S0660
Reach is how much of ATT&CK this tool 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 825 ATT&CK software entries 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
95th percentile · 95% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
98th percentile · 98% of 825 ATT&CK software entries have this many tactics spanned or fewer.
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
64th percentile · 64% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Detection coverage S0660
1407 distinct rules cover the 34 techniques recorded for this tool. The 1611 technique-to-rule mappings resolve to 1407 distinct rules, because one rule can cover several techniques. 976 Sigma · 431 Splunk.
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