File name:

SteamSetup.exe

Full analysis: https://app.any.run/tasks/ebf3175e-2f65-468f-b0fe-e217bc77b4a5
Verdict: Malicious activity
Analysis date: May 26, 2025, 12:36:58
OS: Windows 10 Professional (build: 19044, 64 bit)
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive, 5 sections
MD5:

1B54B70BEEF8EB240DB31718E8F7EB5D

SHA1:

DA5995070737EC655824C92622333C489EB6BCE4

SHA256:

7D3654531C32D941B8CAE81C4137FC542172BFA9635F169CB392F245A0A12BCB

SSDEEP:

98304:S6RFwVoL8grR2bFl3BZmIsejD4m1DnSM3JeZ7FLoiPApPyDqwsd84+e0lLQbolhV:SAbrIo

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Changes the autorun value in the registry

      • SteamSetup.exe (PID: 2560)

  • SUSPICIOUS

    • The process creates files with name similar to system file names

      • SteamSetup.exe (PID: 2560)

    • Malware-specific behavior (creating "System.dll" in Temp)

      • SteamSetup.exe (PID: 2560)

    • There is functionality for taking screenshot (YARA)

      • SteamSetup.exe (PID: 2560)
      • Steam.exe (PID: 1764)
      • Steam.exe (PID: 5096)

    • Executable content was dropped or overwritten

      • SteamSetup.exe (PID: 2560)
      • SteamService.exe (PID: 1184)

    • Creates a software uninstall entry

      • SteamSetup.exe (PID: 2560)

  • INFO

    • The sample compiled with bulgarian language support

      • SteamSetup.exe (PID: 2560)

    • Checks supported languages

      • SteamSetup.exe (PID: 2560)
      • SteamService.exe (PID: 1184)
      • Steam.exe (PID: 1764)
      • Steam.exe (PID: 5096)

    • Reads the computer name

      • SteamSetup.exe (PID: 2560)
      • SteamService.exe (PID: 1184)
      • Steam.exe (PID: 1764)
      • Steam.exe (PID: 5096)

    • Creates files in the program directory

      • SteamSetup.exe (PID: 2560)
      • SteamService.exe (PID: 1184)
      • Steam.exe (PID: 1764)
      • Steam.exe (PID: 5096)

    • Create files in a temporary directory

      • SteamSetup.exe (PID: 2560)

    • Launch of the file from Registry key

      • SteamSetup.exe (PID: 2560)

    • The sample compiled with english language support

      • SteamService.exe (PID: 1184)
      • SteamSetup.exe (PID: 2560)

    • Manual execution by a user

      • Steam.exe (PID: 1764)
      • Steam.exe (PID: 5096)

    • Checks proxy server information

      • Steam.exe (PID: 1764)
      • slui.exe (PID: 5780)

    • Reads the software policy settings

      • Steam.exe (PID: 1764)
      • slui.exe (PID: 2852)
      • slui.exe (PID: 5780)

    • Reads the machine GUID from the registry

      • Steam.exe (PID: 1764)

    • Creates files or folders in the user directory

      • Steam.exe (PID: 1764)

    • Reads CPU info

      • Steam.exe (PID: 1764)
      • Steam.exe (PID: 5096)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable MS Visual C++ (generic) (42.2)
.exe | Win64 Executable (generic) (37.3)
.dll | Win32 Dynamic Link Library (generic) (8.8)
.exe | Win32 Executable (generic) (6)
.exe | Generic Win/DOS Executable (2.7)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2016:07:25 00:55:51+00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 6
CodeSize: 25088
InitializedDataSize: 141824
UninitializedDataSize: 2048
EntryPoint: 0x33b6
OSVersion: 4
ImageVersion: 6
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 2.10.91.91
ProductVersionNumber: 2.10.91.91
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Bulgarian
CharacterSet: Windows, Cyrillic
FileDescription: Steam
FileVersion: 2.10.91.91
LegalCopyright: © Valve Corporation
ProductName: Steam
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
142
Monitored processes
9
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start steamsetup.exe sppextcomobj.exe no specs slui.exe steamservice.exe conhost.exe no specs steam.exe slui.exe steam.exe no specs steamsetup.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1184"C:\Program Files (x86)\Steam\bin\steamservice.exe" /InstallC:\Program Files (x86)\Steam\bin\SteamService.exe
SteamSetup.exe
User:
admin
Company:
Valve Corporation
Integrity Level:
HIGH
Description:
Steam Client Service
Exit code:
0
Version:
08.90.88.32
Modules
Images
c:\program files (x86)\steam\bin\steamservice.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\user32.dll
1764"C:\Program Files (x86)\Steam\steam.exe" C:\Program Files (x86)\Steam\Steam.exe
explorer.exe
User:
admin
Company:
Valve Corporation
Integrity Level:
MEDIUM
Description:
Steam
Exit code:
4294967294
Version:
08.90.88.32
Modules
Images
c:\program files (x86)\steam\steam.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\user32.dll
c:\windows\syswow64\win32u.dll
2432"C:\Users\admin\AppData\Local\Temp\SteamSetup.exe" C:\Users\admin\AppData\Local\Temp\SteamSetup.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Steam
Exit code:
3221226540
Version:
2.10.91.91
Modules
Images
c:\users\admin\appdata\local\temp\steamsetup.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
2560"C:\Users\admin\AppData\Local\Temp\SteamSetup.exe" C:\Users\admin\AppData\Local\Temp\SteamSetup.exe
explorer.exe
User:
admin
Integrity Level:
HIGH
Description:
Steam
Exit code:
0
Version:
2.10.91.91
Modules
Images
c:\users\admin\appdata\local\temp\steamsetup.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\user32.dll
2852"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEventC:\Windows\System32\slui.exe
SppExtComObj.Exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Windows Activation Client
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
5096"C:\Program Files (x86)\Steam\Steam.exe" C:\Program Files (x86)\Steam\Steam.exe—explorer.exe
User:
admin
Company:
Valve Corporation
Integrity Level:
MEDIUM
Description:
Steam
Version:
08.90.88.32
Modules
Images
c:\program files (x86)\steam\steam.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\user32.dll
c:\windows\syswow64\win32u.dll
5780C:\WINDOWS\System32\slui.exe -EmbeddingC:\Windows\System32\slui.exe
svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Activation Client
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
5868\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—SteamService.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
5956C:\WINDOWS\system32\SppExtComObj.exe -EmbeddingC:\Windows\System32\SppExtComObj.Exe—svchost.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
KMS Connection Broker
Exit code:
0
Version:
10.0.19041.3996 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\sppextcomobj.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\oleaut32.dll
Total events
4 880
Read events
4 846
Write events
32
Delete events
2

Modification events

(PID) Process:(2560) SteamSetup.exeKey:HKEY_CURRENT_USER\SOFTWARE\Valve\Steam
Operation:writeName:Language
Value:
tchinese
(PID) Process:(2560) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\Steam
Operation:writeName:Language
Value:
tchinese
(PID) Process:(2560) SteamSetup.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Steam
Value:
"C:\Program Files (x86)\Steam\steam.exe" -silent
(PID) Process:(2560) SteamSetup.exeKey:HKEY_CURRENT_USER\SOFTWARE\Valve\Steam
Operation:writeName:SteamInstaller
Value:
SteamSetup.exe
(PID) Process:(1184) SteamService.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\SteamService
Operation:writeName:installpath_default
Value:
C:\Program Files (x86)\Steam
(PID) Process:(1184) SteamService.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\Steam
Operation:writeName:InstallPath
Value:
C:\Program Files (x86)\Steam
(PID) Process:(2560) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Steam
Operation:writeName:DisplayIcon
Value:
C:\Program Files (x86)\Steam\uninstall.exe
(PID) Process:(2560) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Steam
Operation:writeName:UninstallString
Value:
C:\Program Files (x86)\Steam\uninstall.exe
(PID) Process:(2560) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Steam
Operation:writeName:NoModify
Value:
1
(PID) Process:(2560) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Steam
Operation:writeName:NoRepair
Value:
1
Executable files
9
Suspicious files
301
Text files
2 800
Unknown types
0

Dropped files

PID
Process
Filename
Type
2560SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nseB450.tmp\nsDialogs.dllexecutable
MD5:4E5BC4458AFA770636F2806EE0A1E999
SHA256:91A484DC79BE64DD11BF5ACB62C893E57505FCD8809483AA92B04F10D81F9DE0
2560SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nseB450.tmp\modern-header.bmpimage
MD5:DA3486D12BB4C8AEC16BD9E0D363D23F
SHA256:D93B76D51BD2214FA6E999C1BF70B4AFF5165A6542F9B9B2A92B5672601F4624
2560SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_dutch.txttext
MD5:31A29061E51E245F74BB26D103C666AD
SHA256:56C8A86FA95EAB0D8F34F498E079B5516B96D2A2F1AD9C2A888555E50E47F192
2560SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nseB450.tmp\modern-wizard.bmpimage
MD5:3614A4BE6B610F1DAF6C801574F161FE
SHA256:16E0EDC9F47E6E95A9BCAD15ADBDC46BE774FBCD045DD526FC16FC38FDC8D49B
2560SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nseB450.tmp\nsProcess.dllexecutable
MD5:08072DC900CA0626E8C079B2C5BCFCF3
SHA256:BB6CE83DDAAD4F530A66A1048FAC868DFC3B86F5E7B8E240D84D1633E385AEE8
2560SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nseB450.tmp\System.dllexecutable
MD5:A36FBE922FFAC9CD85A845D7A813F391
SHA256:FA367AE36BFBE7C989C24C7ABBB13482FC20BC35E7812DC377AA1C281EE14CC0
2560SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_english.txttext
MD5:DA6CD2483AD8A21E8356E63D036DF55B
SHA256:EBECECD3F691AC20E5B73E5C81861A01531203DF3CF2BAA9E1B6D004733A42A6
2560SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_greek.txttext
MD5:189BA063D1481528CBD6E0C4AFC3ABAA
SHA256:C0A7A1DF442AC080668762DF795C72AA322E9D415C41BD0A4C676A4DC0551695
2560SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_french.txttext
MD5:10C429EB58B4274AF6B6EF08F376D46C
SHA256:A1F6BA57EE41E009D904905C0CE5E75A59EE6790E08542561303109E1FAAFA13
2560SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_hungarian.txttext
MD5:18AAAF5FFCDD21B1B34291E812D83063
SHA256:1F45BB7BDFA01424F9237EEC60EBA35DC7F0DC4E8C2E193FE768FE96D3FF76D5
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
29
DNS requests
18
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
5496
MoUsoCoreWorker.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
—
—
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
—
—
GET
200
2.16.168.124:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
6544
svchost.exe
GET
200
2.23.77.188:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
1764
Steam.exe
GET
200
2.16.202.121:80
http://r10.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBRpD%2BQVZ%2B1vf7U0RGQGBm8JZwdxcgQUdKR2KRcYVIUxN75n5gZYwLzFBXICEgVw5xnQmeqtCTivokpVYwIezw%3D%3D
unknown
—
—
whitelisted
1764
Steam.exe
GET
200
23.209.209.135:80
http://x1.c.lencr.org/
unknown
—
—
whitelisted
1452
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
1452
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:137
—
—
—
whitelisted
5796
svchost.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
—
—
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
—
—
2.16.168.124:80
crl.microsoft.com
Akamai International B.V.
RU
whitelisted
—
—
95.101.149.131:80
www.microsoft.com
Akamai International B.V.
NL
whitelisted
5496
MoUsoCoreWorker.exe
95.101.149.131:80
www.microsoft.com
Akamai International B.V.
NL
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
6544
svchost.exe
20.190.159.128:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
6544
svchost.exe
2.23.77.188:80
ocsp.digicert.com
AKAMAI-AS
DE
whitelisted
3216
svchost.exe
172.211.123.249:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
FR
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.124.78.146
whitelisted
google.com
  • 142.250.185.174
whitelisted
crl.microsoft.com
  • 2.16.168.124
  • 2.16.168.114
whitelisted
www.microsoft.com
  • 95.101.149.131
whitelisted
login.live.com
  • 20.190.159.128
  • 20.190.159.0
  • 40.126.31.67
  • 40.126.31.128
  • 40.126.31.71
  • 40.126.31.2
  • 40.126.31.69
  • 40.126.31.1
whitelisted
ocsp.digicert.com
  • 2.23.77.188
whitelisted
client.wns.windows.com
  • 172.211.123.249
whitelisted
cdn.steamstatic.com
  • 151.101.195.52
  • 151.101.3.52
  • 151.101.131.52
  • 151.101.67.52
whitelisted
x1.c.lencr.org
  • 23.209.209.135
whitelisted
r10.o.lencr.org
  • 2.16.202.121
  • 95.101.54.131
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
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ANY.RUN
Reports
SteamSetup.exe