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1stBrowser.exe

1stBrowser

SIEN SA

The application 1stBrowser.exe by SIEN SA has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The file has been seen being downloaded from stapibrowser.iminent.com a known adware distribution point operated by SIEN S.A..
Publisher:
SIEN S.A.  (signed by SIEN SA)

Product:
1stBrowser

Version:
3.38.3.3

MD5:
6ef1fe30cc2d6b305c48cc8025f39ea8

SHA-1:
729bbb7bd68ae69fb36ab15f6f1a71928f05478d

SHA-256:
18a3a31e7180d548749b2bbee2e365ce7088ed519e354e3434dc58f44aa1850f

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/23/2024 10:20:22 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien.SIENSA (M)
16.7.14.15

File size:
2 MB (2,069,640 bytes)

Product version:
3.38.3.3

Copyright:
Copyright (C) SIEN 2015

Original file name:
1stBrowser.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\users\{user}\downloads\1stbrowser.exe

Digital Signature
Signed by:
SIEN SA

Authority:
GlobalSign nv-sa

Valid from:
9/14/2015 5:05:56 PM

Valid to:
9/14/2016 5:05:56 PM

Subject:
CN=SIEN SA, O=SIEN SA, L=Paris, C=FR

Issuer:
CN=GlobalSign CodeSigning CA - SHA256 - G2, O=GlobalSign nv-sa, C=BE

Serial number:
11213DB3C4AD369B17F720086E1BBB7BB700

File PE Metadata
Compilation timestamp:
9/16/2015 1:57:24 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
49152:Rc7Zxk80piXXqZsZTI/1CZ+BIaM5hsOxNls1A5eRzhzF:Rc7Lkzpinq6TI/1CZFbsOxNls1A5eV

Entry address:
0x130946

Entry point:
E8, 67, 33, 01, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 83, EC, 20, 56, 57, 6A, 08, 59, BE, 30, D9, 59, 00, 8D, 7D, E0, F3, A5, 8B, 75, 0C, 8B, 7D, 08, 85, F6, 74, 13, F6, 06, 10, 74, 0E, 8B, 0F, 83, E9, 04, 51, 8B, 01, 8B, 70, 18, FF, 50, 20, 89, 7D, F8, 89, 75, FC, 85, F6, 74, 0C, F6, 06, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 20, 22, 57, 00, 5F, 5E, 8B, E5, 5D, C2, 08, 00, 8B, 4D, F4, 64, 89, 0D, 00, 00, 00, 00, 59, 5F, 5F, 5E, 5B, 8B, E5, 5D, 51...
 
[+]

Entropy:
6.5643

Code size:
1.4 MB (1,510,400 bytes)

The file 1stBrowser.exe has been seen being distributed by the following URL.

http://stapibrowser.iminent.com/1stBrowser/.../setup.exe

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