ThreatFox: Clipper IOCs | SOC Hunt Feed

Hunt Hypothesis

This detection rule identifies adversary activity involving specific Indicators of Compromise (IOCs) linked to the Clipper malware, which is known for targeting financial systems by manipulating transaction data and intercepting point-of-sale communications. A SOC team should proactively hunt for these IOCs within Azure Sentinel to rapidly detect early-stage infections that could compromise sensitive payment infrastructure before attackers can exfiltrate critical financial records or alter transaction integrity.

IOC Summary

Malware Family: Clipper Total IOCs: 3 IOC Types: sha256_hash, md5_hash, sha1_hash

Type	Value	Threat Type	First Seen	Confidence
sha256_hash	`fcbc96043c0217e9b62e9329d6b98ecf5223ee0e3976ed5ac83c263428c2d947`	payload	2026-07-25	95%
sha1_hash	`e205f23f4b70e461008a7a42c34ee70637469bc3`	payload	2026-07-25	95%
md5_hash	`79f30bbec34fbbd5fe391949dc6af0e0`	payload	2026-07-25	95%

KQL: Hash Hunt

// Hunt for files matching known malicious hashes
// Source: ThreatFox - Clipper
let malicious_hashes = dynamic(["fcbc96043c0217e9b62e9329d6b98ecf5223ee0e3976ed5ac83c263428c2d947", "e205f23f4b70e461008a7a42c34ee70637469bc3", "79f30bbec34fbbd5fe391949dc6af0e0"]);
DeviceFileEvents
| where SHA256 in (malicious_hashes) or SHA1 in (malicious_hashes) or MD5 in (malicious_hashes)
| project Timestamp, DeviceName, FileName, FolderPath, SHA256, InitiatingProcessFileName
| order by Timestamp desc

Required Data Sources

Sentinel Table	Notes
`DeviceFileEvents`	Ensure this data connector is enabled

References

ThreatFox — Clipper

False Positive Guidance

Here are 4 specific false positive scenarios for the ThreatFox: Clipper IOCs detection rule, along with targeted exclusion strategies tailored for an enterprise environment:

Endpoint Security Scanning of Malware Definitions
- Scenario: The organization’s endpoint protection suite (e.g., CrowdStrike Falcon or Microsoft Defender for Endpoint) performs a scheduled update and scan. During this process, the security agent downloads new malware definition packages which may contain file hashes or network signatures that overlap with known Clipper IOCs, triggering an alert on the scanning service account (CRSVC or MsiInstaller).
- Filter/Exclusion: Create a rule exclusion based on the Process Name (e.g., C:\Program Files\CrowdStrike\fsqa.exe) and the User Account (SYSTEM or specific Service Accounts like svc-antivirus), excluding alerts where the process path matches the known security agent installation directory.
Scheduled Patch Management Deployment
- Scenario: An automated patch management tool (e.g., SCCM, Ivanti, or Ansible Tower) executes a nightly deployment job to update critical banking or financial applications. The deployment scripts often utilize temporary files or network connections that match the IOCs associated with Clipper malware, particularly if the updated application is a financial utility known to interact with similar ports or file structures.
- Filter/Exclusion: Implement an exclusion for alerts occurring during specific maintenance windows (e.g., 02:00–04:00 daily) where the initiating process belongs to the patch management suite (e.g., ccmexec.exe or ansible-runner) and the source IP is a known internal distribution point.
Legacy Financial Application Backup Routines
- Scenario: A legacy financial reporting tool (often used in banking sectors where Clipper is