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microsoftupdater.exe

The executable microsoftupdater.exe has been detected as malware by 2 anti-virus scanners. This is a setup program which is used to install the application. It runs as a scheduled task under the Windows Task Scheduler named MicrosoftUpdater triggered daily at a specified time. The file has been seen being downloaded from www.osdsoft.com and multiple other hosts.
MD5:
5b04fe6a2792db493ca3647cd0e04c97

SHA-1:
49ba29a9a83d39db8cbee91f10c0ac39aa92dc4a

SHA-256:
a608ee329d6cf8521f3bd9dc46fb467457a335c38feaf21219f79a66972bceae

Scanner detections:
2 / 68

Status:
Malware

Analysis date:
11/27/2024 8:48:36 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
Malware/Gen.Generic
2016.01.29

Reason Heuristics
(M)
16.6.6.1

File size:
54.5 KB (55,808 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\roaming\microsoftupdater\microsoftupdater.exe

File PE Metadata
Compilation timestamp:
1/28/2016 4:25:19 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
768:XM5/TaB2qmQy1dxtsNqLB7tszOhAkHuHlZ0EDZXn6GtzTtVzrffL:XM8jmN1zUq7pAkerNttTHr

Entry address:
0x3190

Entry point:
E8, D3, 21, 00, 00, E9, 89, FE, FF, FF, 8B, FF, 55, 8B, EC, 83, EC, 20, 8B, 45, 08, 56, 57, 6A, 08, 59, BE, 24, 92, 40, 00, 8D, 7D, E0, F3, A5, 89, 45, F8, 8B, 45, 0C, 5F, 89, 45, FC, 5E, 85, C0, 74, 0C, F6, 00, 08, 74, 07, C7, 45, F4, 00, 40, 99, 01, 8D, 45, F4, 50, FF, 75, F0, FF, 75, E4, FF, 75, E0, FF, 15, 34, 90, 40, 00, C9, C2, 08, 00, 8B, FF, 55, 8B, EC, 83, 7D, 08, 00, 74, 2D, FF, 75, 08, 6A, 00, FF, 35, 74, E8, 40, 00, FF, 15, 18, 90, 40, 00, 85, C0, 75, 18, 56, E8, 70, 03, 00, 00, 8B, F0, FF, 15...
 
[+]

Code size:
31.5 KB (32,256 bytes)

Scheduled Task
Task name:
MicrosoftUpdater

Path:
\Microsoft\Windows\MicrosoftUpdater

Trigger:
Daily (Runs daily at 20:29)


The file microsoftupdater.exe has been seen being distributed by the following 2 URLs.

http://www.osdsoft.com/.../updater.exe

http://s3-us-west-2.amazonaws.com/.../Updater.exe

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

TCP (HTTP):
Connects to ec2-54-148-148-252.us-west-2.compute.amazonaws.com  (54.148.148.252:80)

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