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MailRuUpdater.exe

MailRuUpdater

LLC Mail.Ru

The application MailRuUpdater.exe by LLC Mail.Ru has been detected as a potentially unwanted program by 2 anti-malware scanners. It runs as a scheduled task under the Windows Task Scheduler named MailRuUpdater triggered to execute each time a user logs in. While running, it connects to the Internet address moscow.cdnmail.ru on port 80 using the HTTP protocol.
Publisher:
Mail.Ru  (signed by LLC Mail.Ru)

Product:
MailRuUpdater

Description:
Mail.Ru updater

Version:
3.10.0.16

MD5:
3ee8efd1b6ecc76031cdbbb4e884ee30

SHA-1:
9490571985cd7088384862817ffb38d04b6f1803

SHA-256:
a3626d4b4554f94e281a232906b418b460cfc9fa08bc19705d4496984f35f81d

Scanner detections:
2 / 68

Status:
Potentially unwanted

Analysis date:
12/24/2024 4:56:34 PM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/MailRu.G potentially unwanted application
6.3.12010.0

Reason Heuristics
Win32.Generic
17.3.1.12

File size:
3.9 MB (4,096,728 bytes)

Product version:
3.10.0.16

Copyright:
Copyright 2015

Original file name:
MailRuUpdater.exe

File type:
Executable application (Win32 EXE)

Language:
English (United States)

Common path:
C:\Program Files\mail.ru\mailruupdater\mailruupdater.exe

Digital Signature
Signed by:
LLC Mail.Ru

Authority:
thawte, Inc.

Valid from:
8/6/2015 1:00:00 AM

Valid to:
10/5/2017 12:59:59 AM

Subject:
CN=LLC Mail.Ru, O=LLC Mail.Ru, L=Moscow, S=Moscow, C=RU

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
2019877A933D8E2E71548EA4AB4827F1

File PE Metadata
Compilation timestamp:
2/21/2017 7:49:05 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x16225C

Entry point:
E8, 7C, 2F, 01, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 83, 3D, 34, CF, 7B, 00, 00, 56, 8B, 35, A4, B1, 7B, 00, 75, 04, 33, C0, EB, 63, 57, 85, F6, 75, 1B, 39, 35, A8, B1, 7B, 00, 74, 53, E8, 92, 30, 01, 00, 85, C0, 75, 4A, 8B, 35, A4, B1, 7B, 00, 85, F6, 74, 40, 83, 7D, 08, 00, 74, 3A, FF, 75, 08, E8, 65, 2E, 00, 00, 59, 8B, F8, EB, 27, 51, E8, 5A, 2E, 00, 00, 59, 3B, C7, 76, 19, 8B, 06, 80, 3C, 38, 3D, 75, 11, 57, FF, 75, 08, 50, E8, E3, 30, 01, 00, 83, C4, 0C, 85, C0, 74, 0F, 83, C6, 04, 8B, 0E, 85, C9, 75...
 
[+]

Entropy:
6.5984

Code size:
3.1 MB (3,209,216 bytes)

Scheduled Task
Task name:
MailRuUpdater

Path:
C:\WINDOWS\Tasks\MailRuUpdater.job

Trigger:
Logon (Runs on logon)


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

TCP (HTTP):
Connects to xml.binupdate.mail.ru  (217.69.139.247:80)

TCP (HTTP):
Connects to moscow.cdnmail.ru  (94.100.180.110:80)

TCP (HTTP):
Connects to mrds.mail.ru  (217.69.139.245:80)

TCP (HTTP SSL):
Connects to vrrp-telemeter1.mail.ru  (217.69.133.209:443)

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