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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. The file has been seen being downloaded from stapibrowser.getinstall.org. While running, it connects to the Internet address i0-h0-s2009.p0-pmo.cdngp.net on port 80 using the HTTP protocol.
Publisher:
S  (signed by SIEN SA)

Product:
Installer

Version:
4.42.1.1

MD5:
5caca6dbd4f489b1d131b9b0ea8b572d

SHA-1:
4e7c256d92ce0b4935b7d6a9335a8864d0e813ae

SHA-256:
a22d7020ec9e7f141afca9e8e71bc148c0a5c734d01b46ae78764d9c17b47f7f

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
4/18/2024 4:52:23 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
17.2.19.11

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 3:20:17 PM

Valid to:
6/7/2017 3:20:17 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:
1121854422706CE0F08C49817C88B651891F

File PE Metadata
Compilation timestamp:
10/10/2016 11:37:41 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...
 
[+]

Entropy:
6.5361

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 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)

TCP (HTTP):
Connects to i0-h0-s2006.p0-pmo.cdngp.net  (174.35.82.75:80)

TCP (HTTP):
Connects to i0-h0-s2009.p0-pmo.cdngp.net  (174.35.82.78:80)

TCP (HTTP):
Connects to i0-h0-s2004.p0-pmo.cdngp.net  (174.35.82.73:80)

TCP (HTTP):
Connects to ec2-23-23-112-220.compute-1.amazonaws.com  (23.23.112.220:80)

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