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bestu.exe

The application bestu.exe has been detected as adware by 2 anti-malware scanners. It runs as a scheduled task under the Windows Task Scheduler triggered daily at a specified time. This file is typically installed with the program best-markit by Revizer Technologies which is a potentially unwanted software program. This is part of the Revizer line of web browser extensions that inject 3rd-party advertisements in the user's web browser as well as setup a proxy server for the browser in order to track behaviors and display context based-ads from various partners (mostly adware).
MD5:
5c58e5c9914cc2729cc340943c0e9fae

SHA-1:
1ea9dbb75161a0faaf9aaf445abb616ca56a70ce

SHA-256:
9a3fe0e2ec5bf0cd18bae06a244b9f150711ec9abe05065fefc78787c3beceed

Scanner detections:
2 / 68

Status:
Adware

Analysis date:
11/23/2024 1:43:08 AM UTC  (today)

Scan engine
Detection
Engine version

Qihoo 360 Security
Malware.QVM10.Gen
1.0.0.1015

Reason Heuristics
Adware.Revizer.Task.F
14.3.19.21

File size:
314 KB (321,536 bytes)

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\Program Files\best-markit-soft\bestu.exe

File PE Metadata
Compilation timestamp:
3/11/2014 3:45:52 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
6144:unLdncO19oyXZY6GE6XBFGIXr1WNyqSwctoRfct+Q0Vk:uLdnp19o6Y6GHfGrNyqEtdtoVk

Entry address:
0x73D7

Entry point:
E8, D4, 71, 00, 00, E9, 89, FE, FF, FF, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, 8B, 54, 24, 0C, 8B, 4C, 24, 04, 85, D2, 74, 69, 33, C0, 8A, 44, 24, 08, 84, C0, 75, 16, 81, FA, 80, 00, 00, 00, 72, 0E, 83, 3D, 50, 29, 44, 00, 00, 74, 05, E9, 2F, 72, 00, 00, 57, 8B, F9, 83, FA, 04, 72, 31, F7, D9, 83, E1, 03, 74, 0C, 2B, D1, 88, 07, 83, C7, 01, 83, E9, 01, 75, F6, 8B, C8, C1, E0, 08, 03, C1, 8B, C8, C1, E0, 10, 03, C1, 8B, CA, 83, E2, 03, C1, E9, 02, 74, 06, F3, AB, 85, D2, 74, 0A, 88, 07...
 
[+]

Entropy:
6.6187

Code size:
200 KB (204,800 bytes)

Scheduled Task
Task name:
best-markit Update

Trigger:
Daily (Runs daily at 12:50 PM)

Action:
bestu.exe \update


The file bestu.exe has been discovered within the following program.

best-markit  by Revizer Technologies
The Best-Markit adware program injects advertisements with its affiliate ad providers in order to serve a number of ad types including banner, inline text links and popups by adding a proxy server to the users computer which directs all web page requests through the Remarketable proxy.
best-markit.com/terms-of-service
84% remove it
 
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The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to unknown.prolexic.com  (72.52.4.90:80)

TCP (HTTP):
Connects to sage.parklogic.com  (69.39.236.56:80)

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