FXSST.dll

  • File Path: C:\Windows\system32\FXSST.dll
  • Description: Fax Service

Hashes

Type Hash
MD5 805DA5DFA15387C0528B441B9EE8C4E4
SHA1 219CC30C4E10F1C3F215C16978F9F53306D73165
SHA256 3846C1E801053F36EB6FCD99E424A50D4145535276BEFA11ACA78CB4A94FEA87
SHA384 CD4B70B3EA95CD3BE25899888FE5DD3A02417D6DAE4BD996EEB90A0DF12B8F920F94005733A6F628764B859D6E4EB502
SHA512 7E0E266F65510BD9FC9CC82A2CBCB1E8D102FD2D01F92A97FD964A962FC2E361EE4C8CF6E25641172C73DD72F91587E3F5C3865941DC792C6725A50A5E87326C
SSDEEP 6144:QPCv0cvK/pXbjcSbcY+CaQdaFOY4iGFYtRdzzoyYxJA:QaE/dbz+xt4vFeF
IMP 15B248A0580B24BD54BF1CFDEE59C572
PESHA1 64E3333358864CE9F57536C513A856FB4AD61673
PE256 F9E0ADA55D37B2F387C2C47CAED1D058EC29C73CED3D6348026434E027C66AFF

DLL Exports:

Function Name Ordinal Type
FaxMonitorStartup 3 Exported Function
IsFaxMessage 4 Exported Function
DllMain 1 Exported Function
FaxMonitorShutdown 2 Exported Function

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: FXSST.DLL
  • Product Name: Microsoft Windows Operating System
  • Company Name: Microsoft Corporation
  • File Version: 10.0.19041.1 (WinBuild.160101.0800)
  • Product Version: 10.0.19041.1
  • Language: English (United States)
  • Legal Copyright: Microsoft Corporation. All rights reserved.
  • Machine Type: 64-bit

File Scan

  • VirusTotal Detections: 0/70
  • VirusTotal Link: https://www.virustotal.com/gui/file/3846c1e801053f36eb6fcd99e424a50d4145535276befa11aca78cb4a94fea87/detection/

File Similarity (ssdeep match)

File Score
C:\Windows\system32\WFS.exe 25
C:\WINDOWS\system32\WFS.exe 32
C:\Windows\system32\WFS.exe 30
C:\Windows\system32\WFS.exe 25
C:\Windows\system32\WFSR.dll 49

Possible Misuse

The following table contains possible examples of FXSST.dll being misused. While FXSST.dll is not inherently malicious, its legitimate functionality can be abused for malicious purposes.

Source Source File Example License
signature-base apt_apt17_malware.yar description = “Detects Samples related to APT17 activity - file FXSST.DLL” CC BY-NC 4.0
signature-base apt_apt17_malware.yar $x2 = “fxsst.dll” fullword ascii CC BY-NC 4.0

MIT License. Copyright (c) 2020 Strontic.