home

1stbrowser1.exe

The application 1stbrowser1.exe 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 setup program which is used to install the application. The file has been seen being downloaded from vzbucket.go.im.
MD5:
bc9450edf238936109e5002424959843

SHA-1:
4181665a546ea4eb9d09991182eb75530a1de3a4

SHA-256:
f8298a18c36dc0db901d33f557bcc97af3cb66fe8b392ec31081d5aa33182915

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/23/2024 10:40:53 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.SIEN.1stBrowser.Meta (M)
16.7.14.1

File size:
29.3 MB (30,770,152 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\1stbrowser1.exe

File PE Metadata
Compilation timestamp:
5/10/2016 12:45:58 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
786432:naT5z8Ou9b9Bwb8AT/aElf+ZL7n95AQVt3sojewX:naTuuaEJM9GQ73djd

Entry address:
0x2137

Entry point:
6A, 00, FF, 15, B4, 40, 40, 00, 50, E8, 98, 09, 00, 00, 59, 50, FF, 15, A0, 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, EE, 0C, 00, 00, 8D, 4D, F8, E8, 0B, 0D, 00, 00, 84, C0, 0F, 84, 9D, 00, 00, 00, 8D, 4D, F8, E8, 03, 0D, 00, 00, 83, F8, 01, 0F, 82, 8C, 00, 00, 00, 8D, 4D, F8, E8, F2, 0C, 00, 00, 3B, 05, E0, 14, 40, 00, 77, 7C, FF, 36, 33, C0, BB, 04, 01, 00, 00, 66, 89, 45, F4, 66, 89, 85, EC...
 
[+]

Packer / compiler:
FASM v1.3x

Code size:
8 KB (8,192 bytes)

The file 1stbrowser1.exe has been seen being distributed by the following URL.

http://vzbucket.go.im/6ae76ba4-7119-45c8-94ed-52f23abece69/build/.../5119147c-78a4-4cff-8e7c-63bdebe7f305.exe

Remove 1stbrowser1.exe - Powered by Reason Core Security
herdProtect is a second line of defense malware removal platform powered by 68 anti-malware engines in the cloud. Since no single anti-malware program is perfect 100% of the time, herdProtect utilizes a 'herd' of multiple engines to guarantee the widest coverage and the earliest possible detection.