Analysis of 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys: clean verdict, risk score 17/100. 0 YARA matches, 0/76 multi-engine detections. SHA256 813f6d4ea41cd804. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
DriverShield analyzed the Windows kernel driver 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys and assigned a verdict of Clean with a composite risk score of 17/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (17/100) |
| YARA matches | 0 |
| Multi-engine detections | 0 / 76 |
| File size | 21936 bytes |
| Code-signing signer | Microsoft Windows Early Launch Anti-malware Publisher |
| Analyzed | 2026-09-06 |
| SHA256 | 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd51359124a94 |
| SHA1 | b36b0e1a5177614588f2b5634a1557acfeaba83b |
| MD5 | 7a615b3d38203d6161fe44944aa151f3 |
Version resource data embedded in the 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys PE header, as extracted by the analysis engine.
| File description | Avast ELAM Driver |
|---|---|
| Product | Avast Antivirus |
| Company | AVAST Software |
| Original filename | aswElam.sys |
| Internal name | aswElam |
| File version | 21.8.277.0 |
| Copyright | Copyright (c) 2021 AVAST Software |
Each component is scored 0-100 and then weighted into the composite. See the analysis methodology for the exact formula.
| Component | Sub-score |
|---|---|
| Multi-engine consensus | 0 / 100 |
| YARA signature matches | 0 / 100 |
| Dangerous kernel imports | 30 / 100 |
| IOCTL dispatch surface | 57 / 100 |
| Known-vulnerable corpus | 0 / 100 |
| Code-signing state | 80 / 100 |
| Packing and entropy | 0 / 100 |
| Dynamic behaviour | 0 / 100 |
| CVE cross-reference | 0 / 100 |
Kernel-mode APIs resolved from the Import Address Table of 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys, ranked by exploitation relevance.
| API | Risk | Why it matters |
|---|---|---|
| MmGetSystemRoutineAddress | high | Potentially dangerous - could be used for privilege escalation or security bypass |
| ExAllocatePoolWithTag | low | Standard kernel API - generally benign |
| RtlInitUnicodeString | low | Standard kernel API - generally benign |
Control codes reachable through the driver dispatch routine. Codes tied to published exploit code are flagged, since they are the primary Bring Your Own Vulnerable Driver (BYOVD) entry points.
| Code | Severity | Transfer | Description |
|---|---|---|---|
| 0x00340037 | high | METHOD_NEITHER | FILE_DEVICE_DISK Function #13 |
| 0x00340043 | high | METHOD_NEITHER | FILE_DEVICE_DISK Function #16 |
| 0x00340033 | high | METHOD_NEITHER | FILE_DEVICE_DISK Function #12 |
| 0x002200F0 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #60 |
| 0x00340328 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #202 |
| 0x00220068 | medium | METHOD_BUFFERED | FILE_DEVICE_UNKNOWN Function #26 |
| 0x00340036 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #13 |
| 0x00340042 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #16 |
| 0x00340030 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #12 |
| 0x00340035 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #13 |
| 0x00340032 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #12 |
| 0x00340039 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #14 |
| 0x00340038 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #14 |
| 0x00340046 | medium | METHOD_OUT_DIRECT | FILE_DEVICE_DISK Function #17 |
| 0x00340031 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #12 |
| 0x00340041 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #16 |
| 0x00340044 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #17 |
| 0x00340034 | medium | METHOD_BUFFERED | FILE_DEVICE_DISK Function #13 |
| 0x00340045 | medium | METHOD_IN_DIRECT | FILE_DEVICE_DISK Function #17 |
Section layout and Shannon entropy. High entropy in a code section is a packing or encryption indicator.
| Section | Virtual size | Raw size | Entropy | Flags |
|---|---|---|---|---|
| .text | 0x0E92 | 0x1000 | 5.92 | CODE, EXEC, READ |
| .rdata | 0x051C | 0x0600 | 3.4 | IDATA, READ |
| .data | 0x0070 | 0x0200 | 0.28 | IDATA, READ, WRITE |
| .pdata | 0x009C | 0x0200 | 1.3 | IDATA, READ |
| INIT | 0x020E | 0x0400 | 3.13 | CODE, EXEC, READ, DISCARD |
| .rsrc | 0x0FB0 | 0x1000 | 3.33 | IDATA, READ, DISCARD |
| .reloc | 0x001C | 0x0200 | 0.36 | IDATA, READ, DISCARD |
| Control Flow Guard | Enabled |
|---|---|
| ASLR | Enabled |
| DEP | Enabled |
| Integrity check | Not enforced |
| Mitigation score | 85 / 100 |
Techniques this driver could enable if loaded by an adversary.
| ID | Technique | Tactic |
|---|---|---|
| T1071 | Application Layer Protocol | Command and Control |
| T1211 | Exploitation for Defense Evasion | Defense Evasion |
| T1543.003 | Windows Service | Persistence |
| T1553.002 | Subvert Trust Controls: Code Signing | Defense Evasion |
| T1652 | Device Driver Discovery | Discovery |
| Signer | Microsoft Windows Early Launch Anti-malware Publisher |
|---|---|
| Signer organisation | Microsoft Corporation |
| Issuer | Microsoft Code Signing PCA 2010 |
| Serial | 33000003ABCF8F4B25E125F5740000000003AB |
| Valid from | 2020-12-15 21:23 UTC |
| Valid until | 2021-12-02 21:23 UTC (expired) |
| Signature validity | Not verified |
Engine angr, status static_approximation, 0 paths explored at a maximum depth of 0. Vulnerability classes reached: 0. Exploitable paths: 0.
Based on DriverShield static and dynamic analysis, 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys is assessed as clean, with no notable risk signals. Its composite risk score is 17/100 (verdict: clean). Always validate findings independently before acting.
813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys has a DriverShield composite risk score of 17/100, placing it in the clean verdict band. SHA256: 813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd51359124a94.
813f6d4ea41cd8045e1331b36a64eccdcb2603152de02150f19fd5135912.sys is a Windows kernel-mode driver (.sys) analyzed by DriverShield for vulnerabilities, BYOVD abuse potential, and malware indicators. It is code-signed by Microsoft Windows Early Launch Anti-malware Publisher.
Related: Other drivers signed by Microsoft Windows Early Launch Anti-malware Publisher · What an IOCTL dispatch code is · BYOVD research index · full driver database · CVE library · code signing atlas