This detection rule identifies adversary behavior involving the execution of 32-bit malware distributed via a curated set of known malicious URLs from URLhaus. A SOC team should proactively hunt for these indicators in Azure Sentinel to uncover potential lateral movement or initial access attempts that may have been missed by standard signature-based defenses due to their specific architecture constraints.
Threat: 32-bit Total URLs: 28 Active URLs: 27
| URL | Status | Threat | Date Added |
|---|---|---|---|
hxxp://180.107.162.176:3588/i | online | malware_download | 2026-07-23 |
hxxp://123.9.193.189:33011/i | online | malware_download | 2026-07-23 |
hxxp://59.180.142.187:52846/i | online | malware_download | 2026-07-23 |
hxxp://219.154.184.42:46862/bin.sh | online | malware_download | 2026-07-23 |
hxxp://110.39.255.227:57592/i | online | malware_download | 2026-07-23 |
hxxp://222.137.38.14:58676/i | online | malware_download | 2026-07-23 |
hxxp://219.157.65.193:56360/i | online | malware_download | 2026-07-23 |
hxxp://222.137.38.14:58676/bin.sh | online | malware_download | 2026-07-23 |
hxxp://185.89.157.150:49271/i | online | malware_download | 2026-07-23 |
hxxp://110.38.221.182:49247/i | online | malware_download | 2026-07-23 |
hxxp://115.55.194.228:54338/i | online | malware_download | 2026-07-23 |
hxxp://219.157.65.193:56360/bin.sh | online | malware_download | 2026-07-23 |
hxxp://222.134.175.201:33021/i | online | malware_download | 2026-07-23 |
hxxp://185.89.157.150:49271/bin.sh | online | malware_download | 2026-07-23 |
hxxp://115.55.48.247:33991/bin.sh | online | malware_download | 2026-07-23 |
hxxp://36.88.136.194:45815/i | online | malware_download | 2026-07-23 |
hxxp://110.38.221.182:49247/bin.sh | online | malware_download | 2026-07-23 |
hxxp://110.39.255.227:57592/bin.sh | online | malware_download | 2026-07-23 |
hxxp://42.52.207.199:34276/i | online | malware_download | 2026-07-23 |
hxxp://219.154.36.120:43197/i | online | malware_download | 2026-07-23 |
hxxp://42.235.95.190:60510/bin.sh | online | malware_download | 2026-07-23 |
hxxp://113.230.198.209:40757/bin.sh | online | malware_download | 2026-07-23 |
hxxp://58.242.23.224:33747/bin.sh | offline | malware_download | 2026-07-23 |
hxxp://36.88.136.194:45815/bin.sh | online | malware_download | 2026-07-23 |
hxxp://112.248.60.201:41266/bin.sh | online | malware_download | 2026-07-23 |
// Hunt for DNS resolution of URLhaus malicious domains
// Threat: 32-bit
let malicious_domains = dynamic(["222.137.38.14", "113.230.198.209", "59.180.142.187", "115.55.48.247", "180.107.162.176", "61.53.75.206", "219.154.36.120", "110.36.72.243", "219.157.65.193", "110.39.255.227", "42.52.207.199", "112.248.60.201", "115.55.194.228", "222.134.175.201", "123.9.193.189", "36.88.136.194", "219.154.184.42", "110.38.221.182", "42.235.95.190", "185.89.157.150"]);
DnsEvents
| where Name has_any (malicious_domains)
| project TimeGenerated, Computer, Name, IPAddresses
| order by TimeGenerated desc
// Hunt for web traffic to URLhaus malicious domains
let malicious_domains = dynamic(["222.137.38.14", "113.230.198.209", "59.180.142.187", "115.55.48.247", "180.107.162.176", "61.53.75.206", "219.154.36.120", "110.36.72.243", "219.157.65.193", "110.39.255.227", "42.52.207.199", "112.248.60.201", "115.55.194.228", "222.134.175.201", "123.9.193.189", "36.88.136.194", "219.154.184.42", "110.38.221.182", "42.235.95.190", "185.89.157.150"]);
CommonSecurityLog
| where RequestURL has_any (malicious_domains) or DestinationHostName has_any (malicious_domains)
| project TimeGenerated, SourceIP, RequestURL, DestinationHostName, DeviceAction
| order by TimeGenerated desc
| Sentinel Table | Notes |
|---|---|
CommonSecurityLog | Ensure this data connector is enabled |
DnsEvents | Ensure this data connector is enabled |
Here are specific false positive scenarios and corresponding filters for the URLhaus: 32-bit Malicious URLs detection rule in an enterprise environment:
Scenario: Legacy Admin Tool Connectivity
User-Agent string containing SCCM-Client or JamfProAgent, combined with an allow-list of known benign domains (e.g., *.microsoft.com, *.jamfsoftware.com) that are tagged as 32-bit in URLhaus.Scenario: Scheduled Backup and Reporting Jobs
Host Process for Windows Services (svchost.exe) or specific service accounts (e.g., DOMAIN\BackupSvc) where the destination port is standard HTTPS (443) and the request method is GET, regardless of the 32-bit tag.Scenario: Internal Knowledge Base and Documentation Access