CHIMNEYSWEEP
MITRE ATT&CK: S1149 View on attack.mitre.org
Aliases: CHIMNEYSWEEP
- First seen
- 2012-01-01 00:00:00
- Malware type
- backdoor
- Family
- Malware family
- Operating systems
- windows
- Profile updated
- 2026-07-07 15:29:38
Targeted industries: government-and-public-sector media-and-entertainment
Targeted regions: country_code:ir country_code:sa
Context
CHIMNEYSWEEP is a backdoor malware that was deployed during HomeLand Justice along with ROADSWEEP ransomware, and has been used to target Farsi and Arabic speakers since at least 2012.
Detection coverage
- 721 Sigma rules
Malware & tools used
- Local Data Staging (attack-pattern)
- Execution Guardrails (attack-pattern)
- CMSTP (attack-pattern)
- Visual Basic (attack-pattern)
- Obfuscated Files or Information (attack-pattern)
- Ingress Tool Transfer (attack-pattern)
- Peripheral Device Discovery (attack-pattern)
- Web Protocols (attack-pattern)
- Native API (attack-pattern)
- Embedded Payloads (attack-pattern)
- Binary Padding (attack-pattern)
- File and Directory Discovery (attack-pattern)
- Clipboard Data (attack-pattern)
- Data from Local System (attack-pattern)
- Deobfuscate/Decode Files or Information (attack-pattern)
- Scheduled Task (attack-pattern)
- Exfiltration Over C2 Channel (attack-pattern)
- PowerShell (attack-pattern)
- Non-Standard Encoding (attack-pattern)
- System Owner/User Discovery (attack-pattern)
- Process Discovery (attack-pattern)
- Keylogging (attack-pattern)
- Security Software Discovery (attack-pattern)
- System Shutdown/Reboot (attack-pattern)
- Dynamic API Resolution (attack-pattern)
Used by threat actors
- HomeLand Justice (campaign)
Reports & references
- cloud.google.com — Likely Iranian Threat Actor Conducts Politically Motivated Disruptive Activity Against (report)
- MITRE ATT&CK — S1149 (report)