WerFault.exe
- File Path:
C:\Windows\SysWOW64\WerFault.exe - Description: Windows Problem Reporting
Hashes
| Type | Hash |
|---|---|
| MD5 | 9F378087906FFDFB968BCBE88BCBC840 |
| SHA1 | DF5CAC004E813F964E77DF0F4BEEDE2B324A78BB |
| SHA256 | 0EEFE1DDE46D019B6BE035FED5ECC867C9965CB13362F940DAD5E0F02DAFB4E3 |
| SHA384 | 79952B6D10856CE71BA330A1C8266898BB739E402FCA89858A88F06421FC56E22FEB0A152614838FAA8800213A0C117E |
| SHA512 | DC471DC56E32E878F009E9BA4E8D7B949DBC9C7913A9167C928A05BAB1EAF380794D1748A5350D95A1A012915A5B5FDD033F814B6E5858666C11093C9918C18C |
| SSDEEP | 12288:XX/jTrVbMkWlYM/eOwTFNwJRMtqFFHzc2HywYM:XvjTrVbMkWlYM/eFgMtqFFHzcyhYM |
Runtime Data
Loaded Modules:
| Path |
|---|
| C:\Windows\SYSTEM32\ntdll.dll |
| C:\Windows\SysWOW64\WerFault.exe |
Signature
- Status: Signature verified.
- Serial:
3300000266BD1580EFA75CD6D3000000000266 - Thumbprint:
A4341B9FD50FB9964283220A36A1EF6F6FAA7840 - Issuer: CN=Microsoft Windows Production PCA 2011, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
- Subject: CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
File Metadata
- Original Filename: WerFault.exe
- Product Name: Microsoft Windows Operating System
- Company Name: Microsoft Corporation
- File Version: 10.0.17763.1339 (WinBuild.160101.0800)
- Product Version: 10.0.17763.1339
- Language: English (United States)
- Legal Copyright: Microsoft Corporation. All rights reserved.
Possible Misuse
The following table contains possible examples of WerFault.exe being misused. While WerFault.exe is not inherently malicious, its legitimate functionality can be abused for malicious purposes.
| Source | Source File | Example | License |
|---|---|---|---|
| sigma | proc_creation_win_bad_opsec_sacrificial_processes.yml | description: 'Detects attackers using tooling with bad opsec defaults e.g. spawning a sacrificial process to inject a capability into the process without taking into account how the process is normally run, one trivial example of this is using rundll32.exe without arguments as a sacrificial process (default in CS, now highlighted by c2lint), running WerFault without arguments (Kraken - credit am0nsec), and other examples.' |
DRL 1.0 |
| sigma | proc_creation_win_bad_opsec_sacrificial_processes.yml | Image\|endswith: '\WerFault.exe' |
DRL 1.0 |
| sigma | proc_creation_win_bad_opsec_sacrificial_processes.yml | CommandLine\|endswith: '\WerFault.exe' |
DRL 1.0 |
| sigma | proc_creation_win_cve_2021_26857_msexchange.yml | - 'WerFault.exe' |
DRL 1.0 |
| sigma | proc_creation_win_exploit_cve_2020_1350.yml | - '\System32\werfault.exe' |
DRL 1.0 |
| sigma | proc_creation_win_lsass_dump.yml | Image\|endswith: '\werfault.exe' |
DRL 1.0 |
| sigma | proc_creation_win_uac_bypass_consent_comctl32.yml | Image\|endswith: '\werfault.exe' |
DRL 1.0 |
| sigma | proc_creation_win_wmiprvse_spawning_process.yml | - '\WerFault.exe' |
DRL 1.0 |
| sigma | win_suspicious_werfault_connection_outbound.yml | title: Suspicious Werfault.exe Network Connection Outbound |
DRL 1.0 |
| sigma | win_suspicious_werfault_connection_outbound.yml | description: Adversaries can migrate cobalt strike/metasploit/C2 beacons on compromised systems to legitimate werfault.exe process to avoid detection. |
DRL 1.0 |
| sigma | win_suspicious_werfault_connection_outbound.yml | Image: 'werfault.exe' |
DRL 1.0 |
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