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firefoxupdate.exe

Chao Wei

The application firefoxupdate.exe by Chao Wei has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. It runs as a separate (within the context of its own process) windows Service named “Update Service(FirefoxU)”. While running, it connects to the Internet address 125.235.4.59.adsl.viettel.vn on port 80 using the HTTP protocol.
Publisher:
Chao Wei  (signed and verified)

MD5:
b52bb766f82a53d6ab21562b6fd22bdc

SHA-1:
c2f4f79ef9cee1d62445d1942d2b787c8c2b5eaa

SHA-256:
0acf3df4ea31c665de1bdd56a4c3507615e69a12035b0204355da2ff58419264

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
1/10/2025 11:55:48 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Elex.Chao (M)
17.3.15.11

File size:
106.7 KB (109,232 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\firefox\bin\firefoxupdate.exe

Digital Signature
Signed by:
Chao Wei

Authority:
thawte, Inc.

Valid from:
1/13/2017 7:00:00 AM

Valid to:
8/19/2017 6:59:59 AM

Subject:
CN=Chao Wei, OU=Individual Developer, O=No Organization Affiliation, L=Beijing, S=Beijing, C=CN

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
45A8458D05878B9FE97F9367F3956CDE

File PE Metadata
Compilation timestamp:
3/15/2017 12:18:05 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
14.0

Entry address:
0x65DE

Entry point:
E8, C8, 04, 00, 00, E9, 8E, FE, FF, FF, 55, 8B, EC, 56, FF, 75, 08, 8B, F1, E8, 58, 00, 00, 00, C7, 06, B4, 21, 41, 00, 8B, C6, 5E, 5D, C2, 04, 00, 83, 61, 04, 00, 8B, C1, 83, 61, 08, 00, C7, 41, 04, BC, 21, 41, 00, C7, 01, B4, 21, 41, 00, C3, 55, 8B, EC, 56, FF, 75, 08, 8B, F1, E8, 25, 00, 00, 00, C7, 06, D0, 21, 41, 00, 8B, C6, 5E, 5D, C2, 04, 00, 83, 61, 04, 00, 8B, C1, 83, 61, 08, 00, C7, 41, 04, D8, 21, 41, 00, C7, 01, D0, 21, 41, 00, C3, 55, 8B, EC, 56, 8B, F1, 8D, 46, 04, C7, 06, 94, 21, 41, 00, 83...
 
[+]

Entropy:
6.4777

Code size:
67 KB (68,608 bytes)

Service
Display name:
Update Service(FirefoxU)

Service name:
FirefoxU

Description:
Keeps your Firefox software up to date. If this service is disabled or stopped, your Firefox software will not be kept up to date, meaning security vulnerabilities that may arise cannot be fixed and f

Type:
Win32OwnProcess

Depends on:
RpcSs


The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to 125.235.4.59.adsl.viettel.vn  (125.235.4.59:80)

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