SystemBC has encoded with XOR and encrypted with RC4 its beacon.6
tool
SystemBC S9001
- Type
- malware
- Platforms
- Linux, Windows
- Created
- 15 December 2025
- Last modified
- 23 April 2026
SystemBC is a malware family offered as a malware-as-a-service (MaaS) that is used to establish command and control and facilitate follow-on activity, including ransomware deployment.SystemBC executes a variety of tasks including setting up SOCKS5 proxies, maintaining persistence, ingesting malicious files, and handing C2 communication. SystemBC was first detected in 2018, and has been used by Wizard Spider since at least 2020, and by FIN7 since at least 2022.[1][2][3][4][5]
21
TechniquesTop 18%
6
Tactics53rd pct
3
Threat groupsunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S9001
SystemBC has executed a copy of itself as a scheduled task with the start command. The copy of SystemBC has random file and directory names within the ProgramData directory.78
SystemBC has used hidden scheduled tasks to execute PowerShell commands by adding the following: -WindowStyle Hidden -ep bypass -file .10
SystemBC has used cmd.exe to execute VBS scripts, BAT scripts and CMD scripts.11
SystemBC has leveraged VBScript to execute malicious code.12
Standing S9001
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
Techniques21Top 18%
82nd percentile · 82% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics653rd pct
53rd percentile · 53% of 825 ATT&CK software entries have this many tactics spanned or fewer.
Threat groups361% 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 / technique11medBottom 18%
18th percentile · 82% of 825 ATT&CK software entries have more detection rules per technique.
Tests / technique4med
Detection coverage S9001
707 distinct rules cover the 21 techniques recorded for this tool. The 804 technique-to-rule mappings resolve to 707 distinct rules, because one rule can cover several techniques. 509 Sigma · 198 Splunk.
19 covered by at least one rule2 with no coverage707 distinct rules in total
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