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1stbrowser.exe

Installer

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. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. The file has been seen being downloaded from stapibrowser.getinstall.org. While running, it connects to the Internet address i0-h0-s1015.p1-iad.cdngp.net on port 80 using the HTTP protocol.
Publisher:
S  (signed by SIEN SA)

Product:
Installer

Version:
4.42.1.1

MD5:
964c3d70c854fa09321c5fefa1f58f3e

SHA-1:
169a973ffd13aed68c01c8eef0053876f3175757

SHA-256:
96d2ba4ec4129fb241beb231e78dd8010b1c2eea08dc6a78b53e774472fc6d00

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
4/25/2024 6:42:10 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
17.3.1.14

File size:
2.4 MB (2,505,880 bytes)

Product version:
4.42.1.1

Copyright:
Copyright (C) 2016

Original file name:
Installer.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:
6/6/2016 8:20:17 AM

Valid to:
6/7/2017 8:20:17 AM

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:
1121854422706CE0F08C49817C88B651891F

File PE Metadata
Compilation timestamp:
10/10/2016 4:37:41 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
14.0

Entry address:
0x1501B0

Entry point:
E8, B0, 08, 00, 00, E9, 8E, FE, FF, FF, FF, 25, F4, 9A, 5B, 00, 8B, 4D, F4, 64, 89, 0D, 00, 00, 00, 00, 59, 5F, 5F, 5E, 5B, 8B, E5, 5D, 51, F2, C3, 8B, 4D, F0, 33, CD, F2, E8, 5C, F5, FF, FF, F2, E9, DA, FF, FF, FF, 8B, 4D, EC, 33, CD, F2, E8, 4B, F5, FF, FF, F2, E9, C9, FF, FF, FF, 50, 64, FF, 35, 00, 00, 00, 00, 8D, 44, 24, 0C, 2B, 64, 24, 0C, 53, 56, 57, 89, 28, 8B, E8, A1, C8, EF, 61, 00, 33, C5, 50, FF, 75, FC, C7, 45, FC, FF, FF, FF, FF, 8D, 45, F4, 64, A3, 00, 00, 00, 00, F2, C3, 50, 64, FF, 35, 00...
 
[+]

Code size:
1.7 MB (1,798,656 bytes)

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

http://stapibrowser.getinstall.org/1stBrowser/.../setup.exe

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

TCP (HTTP):
Connects to i0-h0-s1025.p1-iad.cdngp.net  (66.114.52.21:80)

TCP (HTTP):
Connects to i0-h0-s1015.p1-iad.cdngp.net  (66.114.52.11:80)

TCP (HTTP):
Connects to ec2-52-55-12-167.compute-1.amazonaws.com  (52.55.12.167:80)

TCP (HTTP):
Connects to ec2-52-45-106-116.compute-1.amazonaws.com  (52.45.106.116:80)

TCP (HTTP):
Connects to ec2-50-19-113-170.compute-1.amazonaws.com  (50.19.113.170:80)

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