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regsvr.exe

The executable regsvr.exe has been detected as malware by 40 anti-virus scanners. It runs as a scheduled task under the Windows Task Scheduler. Infected by an entry-point obscuring polymorphic file infector which will create a peer-to-peer botnet and receives URLs of additional files to download. While running, it connects to the Internet address dev.ucoz.net on port 80 using the HTTP protocol.
MD5:
54e9ac1d444bb39a573196d88718cb58

SHA-1:
c17d3a38a0071caf2893c6db68157ebfd39750d3

Scanner detections:
40 / 68

Status:
File is infected by a Virus

Explanation:
The file is infected by a polymorphic file infector virus.

Analysis date:
11/17/2025 2:24:45 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Win32.Sality.AP.Gen
7.1.1

AhnLab V3 Security
HEUR/Fakon.mwf
2015.11.13

Avira AntiVirus
W32/Sality.Y
8.3.2.2

Arcabit
Worm.Generic.DA533
1.0.0.593

avast!
AutoIt:AutoRun-B@BC [Wrm]
2014.9-170214

AVG
Autoit
2018.0.2467

Baidu Antivirus
Worm.Win32.AutoRun
4.0.3.17214

Bitdefender
Worm.Generic.42291
1.0.20.225

Bkav FE
W32.Sality.PE
1.3.0.7383

Clam AntiVirus
Trojan.Siggen-7
0.98/21511

Comodo Security
Virus.Win32.Sality.gen
23581

Dr.Web
Trojan.Click1.37970
9.0.1.045

Emsisoft Anti-Malware
Worm.Generic.42291
8.17.02.14.12

ESET NOD32
Win32/Sality.NAU
11.12561

Fortinet FortiGate
W32/Sohanad.NFG!worm
2/14/2017

F-Prot
W32/Trojan2.DFYJ
v6.4.7.1.166

F-Secure
IM-Worm:W32/Sohanad.HM
11.2017-14-02_3

G Data
Worm.Generic.42291
17.2.25

IKARUS anti.virus
Worm.Win32.AutoRun
t3scan.1.9.5.0

K7 AntiVirus
Trojan
13.212.17847

Kaspersky
Worm.Win32.AutoRun
14.0.0.-1168

Malwarebytes
Trojan.IMWorm
v2017.02.14.12

McAfee
W32/Sality.gen.z
5600.6123

Microsoft Security Essentials
Virus:Win32/Sality.AM
1.1.12205.0

MicroWorld eScan
Worm.Generic.42291
18.0.0.135

NANO AntiVirus
Trojan.Win32.AutoRun.vsdtf
0.30.26.4437

nProtect
Trojan/W32.AutoIt.686975
15.11.13.01

Panda Antivirus
Trj/Autoit.gen
17.02.14.12

Qihoo 360 Security
Virus.Win32.Sality.I
1.0.0.1077

Quick Heal
W32.Sality.R
2.17.14.00

Rising Antivirus
PE:Worm.VobfusEx!1.99DF [F]
23.00.65.17212

Sophos
W32/Sality-AM
4.98

SUPERAntiSpyware
Trojan.Agent/Gen-ModTool
8592

Total Defense
Win32/Armax.H
37.1.62.1

Trend Micro House Call
PE_SALITY.JER
7.2.45

Trend Micro
PE_SALITY.JER
10.465.14

Vba32 AntiVirus
Virus.Win32.Sality.baka
3.12.26.4

VIPRE Antivirus
Trojan.Win32.AutoIT.gen
45196

ViRobot
Win32.Sality.Gen.A[h]
2014.3.20.0

Zillya! Antivirus
Virus.Sality.Win32.15
2.0.0.2507

File size:
670.9 KB (686,975 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\Windows\System32\regsvr.exe

File PE Metadata
Compilation timestamp:
11/25/2007 2:51:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

Entry address:
0xA5001

Entry point:
60, E8, 19, 00, 00, 00, 89, B9, 27, 2F, 70, 9F, 62, 33, C4, 96, B1, F7, CE, E7, 0E, AA, 3D, 6B, 52, 00, 11, 5A, 75, BD, A2, 68, 73, EB, 97, 83, E8, 7C, 06, 00, 00, 58, 83, E1, 00, 51, FF, 15, 60, 5F, 4A, 00, 33, C1, 0F, BE, C6, 8D, 3D, 1D, 6C, 7F, 46, 03, C3, B0, CF, 0F, BE, F4, 5B, 81, FD, 24, 66, 00, 00, 8B, CD, C1, D1, BF, 72, 0F, 31, DD, 8B, CF, 13, CD, 87, C8, C1, D1, EC, 0F, BA, FF, 7C, 81, C3, 78, B2, 00, 00, 85, DA, 81, C3, EE, 7A, 00, 00, 81, D1, 9C, EF, F6, E1, 0F, AC, D8, 06, 0F, B7, CF, 15, 4C...
 
[+]

Entropy:
7.8481

Packer / compiler:
ASPack v1.08.04

Code size:
404.5 KB (414,208 bytes)

Scheduled Task
Task name:
At1

Path:
C:\WINDOWS\Tasks\At1.job

Trigger:
Weekly (Runs weekly on Wednesdays at 9:00 AM)

Description:
Created by NetScheduleJobAdd.


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

TCP (HTTP):
Connects to dev.ucoz.net  (195.216.243.102:80)

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