HELLOKITTY can use WMI to delete volume shadow copies.2
tool
HELLOKITTY S0617
- Type
- malware
- Platform
- Windows
- Created
- 3 June 2021
- Last modified
- 25 April 2025
HELLOKITTY is a ransomware written in C++ that shares similar code structure and functionality with DEATHRANSOM and FIVEHANDS. HELLOKITTY has been used since at least 2020, targets have included a Polish video game developer and a Brazilian electric power company.[1]
6
Techniques29th pct
3
TacticsBottom 21%
0
Threat groupsNone recorded
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0617
HELLOKITTY can search for specific processes to terminate.3
HELLOKITTY has the ability to enumerate network resources.4
HELLOKITTY can use an embedded RSA-2048 public key to encrypt victim data for ransom.5
HELLOKITTY can delete volume shadow copies on compromised hosts.6
HELLOKITTY can enumerate logical drives on a target system.7
Standing S0617
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
Techniques629th pct
29th percentile · 71% of 825 ATT&CK software entries have more Enterprise techniques.
Tactics3Bottom 21%
21st percentile · 79% of 825 ATT&CK software entries have more tactics spanned.
Threat groups061% tie · 22 values
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns085% tie · 8 values
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
Rules / technique21.5med50th pct
50th percentile · 50% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique10med
Detection coverage S0617
166 distinct rules cover the 6 techniques recorded for this tool. The 170 technique-to-rule mappings resolve to 166 distinct rules, because one rule can cover several techniques. 111 Sigma · 55 Splunk.
5 covered by at least one rule1 with no coverage166 distinct rules in total
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