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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 bit.ly. While running, it connects to the Internet address www.ibbalance.com on port 443.
Publisher:
S  (signed by SIEN SA)

Product:
Installer

Version:
4.14.1.1

MD5:
cbe803a5ed5dbadea2a8e0a175bf6388

SHA-1:
2c065f0df38c21a7303c2c033307556c54d69eec

SHA-256:
b2b0b2b0f8ff8357f6c420bd94292bf363eaf33609fb7453e801ac089e69ccf3

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
4/25/2024 4:29:41 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Sien (M)
16.7.31.3

File size:
2.1 MB (2,194,536 bytes)

Product version:
4.14.1.1

Copyright:
Copyright (C) 2015

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:
9/14/2015 3:05:56 PM

Valid to:
9/14/2016 3:05:56 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:
3/28/2016 5:13:18 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
14.0

CTPH (ssdeep):
49152:e4WpbT+YxRge4RSNEGAdhXaV9ktb57nxwMkVuUX29OgfAxbQMLBwUCDD28KVnjHx:e4WpbT+YxRv4wNc4HEFnCvgomMLBwUC2

Entry address:
0x131C0E

Entry point:
E8, 65, 08, 00, 00, E9, 80, FE, FF, FF, 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, 5A, F5, FF, FF, F2, E9, DA, FF, FF, FF, 8B, 4D, EC, 33, CD, F2, E8, 49, 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, 0C, E1, 5E, 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, 00, 00, 00, 8D, 44, 24...
 
[+]

Entropy:
6.5791

Code size:
1.5 MB (1,624,064 bytes)

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

http://bit.ly/21jeuI0

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

TCP (HTTP):
Connects to www.softologic.com  (174.37.181.31:80)

TCP (HTTP SSL):
Connects to www.ibbalance.com  (173.192.190.227:443)

TCP (HTTP):
Connects to stats-182385724-1591972470.us-east-1.elb.amazonaws.com  (54.221.252.69:80)

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