File name:

SteamSetup.exe

Full analysis: https://app.any.run/tasks/f1760f4b-6ed8-4afa-8bc4-86c4192e42fc
Verdict: Malicious activity
Analysis date: May 21, 2025, 15:15:01
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: 4812)

  • SUSPICIOUS

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

      • SteamSetup.exe (PID: 4812)

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

      • SteamSetup.exe (PID: 4812)

    • There is functionality for taking screenshot (YARA)

      • SteamSetup.exe (PID: 4812)

    • Executable content was dropped or overwritten

      • SteamSetup.exe (PID: 4812)
      • SteamService.exe (PID: 6036)

    • Creates a software uninstall entry

      • SteamSetup.exe (PID: 4812)

  • INFO

    • Reads the computer name

      • SteamService.exe (PID: 6036)
      • SteamSetup.exe (PID: 4812)
      • Steam.exe (PID: 2984)

    • Creates files in the program directory

      • Steam.exe (PID: 2984)
      • SteamSetup.exe (PID: 4812)
      • SteamService.exe (PID: 6036)

    • The sample compiled with english language support

      • SteamSetup.exe (PID: 4812)
      • SteamService.exe (PID: 6036)

    • Checks supported languages

      • SteamSetup.exe (PID: 4812)
      • SteamService.exe (PID: 6036)
      • Steam.exe (PID: 2984)

    • The sample compiled with bulgarian language support

      • SteamSetup.exe (PID: 4812)

    • Checks proxy server information

      • Steam.exe (PID: 2984)

    • Reads the machine GUID from the registry

      • Steam.exe (PID: 2984)

    • Create files in a temporary directory

      • SteamSetup.exe (PID: 4812)

    • Manual execution by a user

      • Steam.exe (PID: 2984)

    • Reads the software policy settings

      • Steam.exe (PID: 2984)

    • Reads CPU info

      • Steam.exe (PID: 2984)

    • Creates files or folders in the user directory

      • Steam.exe (PID: 2984)
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.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
137
Monitored processes
7
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 no specs steamservice.exe conhost.exe no specs steam.exe steamsetup.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1672"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
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
2984"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
4812"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
6036"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
6040C:\WINDOWS\system32\SppExtComObj.exe -EmbeddingC:\Windows\System32\SppExtComObj.Exe—svchost.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
KMS Connection Broker
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
6468\??\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
7012"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
Total events
3 896
Read events
3 867
Write events
27
Delete events
2

Modification events

(PID) Process:(4812) SteamSetup.exeKey:HKEY_CURRENT_USER\SOFTWARE\Valve\Steam
Operation:writeName:Language
Value:
english
(PID) Process:(4812) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\Steam
Operation:writeName:Language
Value:
english
(PID) Process:(4812) SteamSetup.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Steam
Value:
"C:\Program Files (x86)\Steam\steam.exe" -silent
(PID) Process:(4812) SteamSetup.exeKey:HKEY_CURRENT_USER\SOFTWARE\Valve\Steam
Operation:writeName:SteamInstaller
Value:
SteamSetup.exe
(PID) Process:(6036) SteamService.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\SteamService
Operation:writeName:installpath_default
Value:
C:\Program Files (x86)\Steam
(PID) Process:(6036) SteamService.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\Steam
Operation:writeName:InstallPath
Value:
C:\Program Files (x86)\Steam
(PID) Process:(4812) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\Steam\NSIS
Operation:writeName:Path
Value:
C:\Program Files (x86)\Steam
(PID) Process:(4812) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\Steam
Operation:writeName:InstallPath
Value:
C:\Program Files (x86)\Steam
(PID) Process:(4812) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Valve\SteamService
Operation:writeName:installpath_default
Value:
C:\Program Files (x86)\Steam
(PID) Process:(6036) SteamService.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\steam
Operation:writeName:URL Protocol
Value:
Executable files
9
Suspicious files
13
Text files
32
Unknown types
0

Dropped files

PID
Process
Filename
Type
4812SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnBD49.tmp\modern-header.bmpimage
MD5:DA3486D12BB4C8AEC16BD9E0D363D23F
SHA256:D93B76D51BD2214FA6E999C1BF70B4AFF5165A6542F9B9B2A92B5672601F4624
4812SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnBD49.tmp\nsDialogs.dllexecutable
MD5:4E5BC4458AFA770636F2806EE0A1E999
SHA256:91A484DC79BE64DD11BF5ACB62C893E57505FCD8809483AA92B04F10D81F9DE0
4812SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnBD49.tmp\modern-wizard.bmpimage
MD5:3614A4BE6B610F1DAF6C801574F161FE
SHA256:16E0EDC9F47E6E95A9BCAD15ADBDC46BE774FBCD045DD526FC16FC38FDC8D49B
4812SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnBD49.tmp\System.dllexecutable
MD5:A36FBE922FFAC9CD85A845D7A813F391
SHA256:FA367AE36BFBE7C989C24C7ABBB13482FC20BC35E7812DC377AA1C281EE14CC0
4812SteamSetup.exeC:\Program Files (x86)\Steam\Steam.exeexecutable
MD5:33BCB1C8975A4063A134A72803E0CA16
SHA256:12222B0908EB69581985F7E04AA6240E928FB08AA5A3EC36ACAE3440633C9EB1
4812SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_english.txttext
MD5:DA6CD2483AD8A21E8356E63D036DF55B
SHA256:EBECECD3F691AC20E5B73E5C81861A01531203DF3CF2BAA9E1B6D004733A42A6
4812SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_finnish.txttext
MD5:9E62FC923C65BFC3F40AAF6EC4FD1010
SHA256:8FF0F3CBDF28102FF037B9CDA90590E4B66E1E654B90F9AEA2CD5364494D02B7
4812SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_greek.txttext
MD5:189BA063D1481528CBD6E0C4AFC3ABAA
SHA256:C0A7A1DF442AC080668762DF795C72AA322E9D415C41BD0A4C676A4DC0551695
4812SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_german.txttext
MD5:5C026FD6072A7C5CF31C75818CDDEDEC
SHA256:0828572E4FA00C186DBF1D9072A6154D65CB499C6A37E338F3305F77A2FEE382
4812SteamSetup.exeC:\Program Files (x86)\Steam\public\steambootstrapper_indonesian.txttext
MD5:1514D082B672B372CDFB8DD85C3437F1
SHA256:3B3C5C615FD82070CC951AB482D3DE8CB12DF0B3DF59FBD11F9D3271FA2FBCA4
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
25
DNS requests
16
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
—
—
GET
200
23.48.23.143:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
—
—
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
2984
Steam.exe
GET
200
184.24.77.45:80
http://r10.o.lencr.org/MFMwUTBPME0wSzAJBgUrDgMCGgUABBRpD%2BQVZ%2B1vf7U0RGQGBm8JZwdxcgQUdKR2KRcYVIUxN75n5gZYwLzFBXICEgVw5xnQmeqtCTivokpVYwIezw%3D%3D
unknown
—
—
whitelisted
5512
SIHClient.exe
GET
200
2.23.246.101:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
2984
Steam.exe
GET
200
69.192.161.44:80
http://x1.c.lencr.org/
unknown
—
—
whitelisted
5512
SIHClient.exe
GET
200
2.23.246.101:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
whitelisted
6544
svchost.exe
GET
200
2.17.190.73:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
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
—
—
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
—
—
23.48.23.143:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
—
—
95.101.149.131:80
www.microsoft.com
Akamai International B.V.
NL
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
3216
svchost.exe
172.211.123.250:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
FR
whitelisted
6544
svchost.exe
40.126.32.138:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
6544
svchost.exe
2.17.190.73:80
ocsp.digicert.com
AKAMAI-AS
DE
whitelisted
2984
Steam.exe
151.101.3.52:443
cdn.steamstatic.com
FASTLY
US
whitelisted
2984
Steam.exe
69.192.161.44:80
x1.c.lencr.org
AKAMAI-AS
DE
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.104.136.2
  • 20.73.194.208
whitelisted
crl.microsoft.com
  • 23.48.23.143
  • 23.48.23.156
  • 23.48.23.166
whitelisted
google.com
  • 142.250.186.78
whitelisted
www.microsoft.com
  • 95.101.149.131
  • 2.23.246.101
whitelisted
client.wns.windows.com
  • 172.211.123.250
whitelisted
login.live.com
  • 40.126.32.138
  • 20.190.160.14
  • 20.190.160.64
  • 40.126.32.76
  • 40.126.32.68
  • 40.126.32.133
  • 40.126.32.72
  • 20.190.160.66
whitelisted
ocsp.digicert.com
  • 2.17.190.73
whitelisted
cdn.steamstatic.com
  • 151.101.3.52
  • 151.101.195.52
  • 151.101.131.52
  • 151.101.67.52
whitelisted
x1.c.lencr.org
  • 69.192.161.44
whitelisted
r10.o.lencr.org
  • 184.24.77.45
  • 184.24.77.54
  • 184.24.77.77
  • 184.24.77.56
whitelisted

Threats

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