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13d54bea-81da-49b5-8047-5cf64af541d7.exe

1stBrowser Installer

SIEN S.A.

This is the SIEN AppScion Installer which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application 13d54bea-81da-49b5-8047-5cf64af541d7.exe by SIEN S.A 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 program is a setup application that uses the SIEN SuperInstall installer. The file has been seen being downloaded from vzbucket.go.im.
Publisher:
The 1stBrowser Authors  (signed by SIEN S.A.)

Product:
1stBrowser Installer

Version:
39.0.2132.32

MD5:
d94167c21c8eaf228436bf632c007bb6

SHA-1:
7f1a0c9bb4f250485a54130c43a9fa468e17c12f

SHA-256:
66e68c294883941d2c21a28d690b1a7e2d37cf22c30a5391747c96970b260d0f

Scanner detections:
1 / 68

Status:
Potentially unwanted

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
12/24/2024 4:39:10 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien.SIENSA.Bundler (M)
15.8.5.10

File size:
37.3 MB (39,127,696 bytes)

Product version:
39.0.2132.32

Copyright:
Copyright 2014 The 1stBrowser Authors. All rights reserved.

File type:
Executable application (Win32 EXE)

Bundler/Installer:
SIEN SuperInstall

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\13d54bea-81da-49b5-8047-5cf64af541d7.exe

Digital Signature
Signed by:
SIEN S.A.

Authority:
GlobalSign nv-sa

Valid from:
2/17/2015 1:45:29 PM

Valid to:
6/12/2016 10:20:39 AM

Subject:
E=support@sien.com, CN=SIEN S.A., O=SIEN S.A., L=Paris, C=FR

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

Serial number:
112158A643D1C958507AAB7FE826772BFA60

File PE Metadata
Compilation timestamp:
6/24/2015 3:06:00 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
786432:29T8Tj2EqAR5jWmDVS6TCl1G12LF/CQO5ajKBMAZiKkcNRPUD/Cu5l/Ew4:2QO6NrTCl1YchSwAGkodiw4

Entry address:
0x21A9

Entry point:
6A, 00, FF, 15, A4, 40, 40, 00, 50, E8, F2, 08, 00, 00, 59, 50, FF, 15, 90, 40, 40, 00, CC, 55, 8B, EC, 81, EC, 14, 02, 00, 00, 53, 56, 8B, 75, 14, 85, F6, 0F, 84, BE, 00, 00, 00, FF, 75, 08, 8D, 4D, F8, FF, 75, 0C, FF, 75, 10, E8, BF, 0C, 00, 00, 8D, 4D, F8, E8, DC, 0C, 00, 00, 84, C0, 0F, 84, 9D, 00, 00, 00, 8D, 4D, F8, E8, D4, 0C, 00, 00, 83, F8, 01, 0F, 82, 8C, 00, 00, 00, 8D, 4D, F8, E8, C3, 0C, 00, 00, 3B, 05, 98, 15, 40, 00, 77, 7C, FF, 36, 33, C0, BB, 04, 01, 00, 00, 66, 89, 45, F4, 66, 89, 85, EC...
 
[+]

Entropy:
8.0000

Packer / compiler:
FASM v1.3x

Code size:
8 KB (8,192 bytes)

The file 13d54bea-81da-49b5-8047-5cf64af541d7.exe has been seen being distributed by the following URL.

http://vzbucket.go.im/6ae76ba4-7119-45c8-94ed-52f23abece69/build/.../13d54bea-81da-49b5-8047-5cf64af541d7.exe

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