ChChes copies itself to an .exe file with a filename that is likely intended to imitate Norton Antivirus but has several letters reversed (e.g. notron.exe).4
tool
ChChes S0144
- Type
- malware
- Platform
- Windows
- Created
- 31 May 2017
- Last modified
- 17 November 2024
ChChes is a Trojan that appears to be used exclusively by menuPass. It was used to target Japanese organizations in 2016. Its lack of persistence methods suggests it may be intended as a first-stage tool. [1] [2] [3]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0144
ChChes collects its process identifier (PID) on the victim.5
ChChes communicates to its C2 server over HTTP and embeds data within the Cookie HTTP header.67
ChChes collects the victim hostname, window resolution, and Microsoft Windows version.89
ChChes collects the victim's %TEMP% directory path and version of Internet Explorer.10
ChChes is capable of downloading files, including additional modules.111213
Standing S0144
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
54th percentile · 54% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
68th percentile · 68% 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
71st percentile · 71% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Detection coverage S0144
642 distinct rules cover the 12 techniques recorded for this tool. The 658 technique-to-rule mappings resolve to 642 distinct rules, because one rule can cover several techniques. 425 Sigma · 217 Splunk.
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