File name:

SteamSetup.exe

Full analysis: https://app.any.run/tasks/6273e026-e2d3-4660-bbb1-af3a54e32c41
Verdict: Malicious activity
Analysis date: April 02, 2018, 05:05:42
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive
MD5:

2FF3BC864A298B7F0F78B30151E64167

SHA1:

E930DBDB3BC638F772A8FCD92DBCD0919C924318

SHA256:

029F918A29B2B311711788E8A477C8DE529C11D7DBA3CAF99CBBDE5A983EFDAD

SSDEEP:

24576:SD66l6y/o8IIHMmlAR/DRqdY87RoM2L1h9jrM6c33EUy7MpyU:SDVV/iIHQRLwU1h9rM/nEUiMpl

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

    • Application loaded dropped or rewritten executable

      • SteamSetup.exe (PID: 3104)

    • Changes the autorun value in the registry

      • SteamSetup.exe (PID: 3104)

    • Application was dropped or rewritten from another process

      • nsFA77.tmp (PID: 2868)
      • steamservice.exe (PID: 1308)
      • steam.exe (PID: 2612)

  • SUSPICIOUS

    • Modifies the open verb of a shell class

      • steamservice.exe (PID: 1308)

    • Creates files in the program directory

      • SteamSetup.exe (PID: 3104)
      • steamservice.exe (PID: 1308)
      • steam.exe (PID: 2612)

    • Creates a software uninstall entry

      • SteamSetup.exe (PID: 3104)

    • Creates or modifies windows services

      • steamservice.exe (PID: 1308)

    • Starts application with an unusual extension

      • SteamSetup.exe (PID: 3104)

  • INFO

    • Loads rich edit control libraries

      • SteamSetup.exe (PID: 3104)

    • Dropped object may contain URL's

      • steamservice.exe (PID: 1308)
      • SteamSetup.exe (PID: 3104)
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 02:55:51+02:00
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

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 25-Jul-2016 00:55:51
Detected languages:
  • Bulgarian - Bulgaria
  • Chinese - PRC
  • Chinese - Taiwan
  • Czech - Czech Republic
  • Danish - Denmark
  • Dutch - Netherlands
  • English - United States
  • Finnish - Finland
  • French - France
  • German - Germany
  • Greek - Greece
  • Hungarian - Hungary
  • Italian - Italy
  • Japanese - Japan
  • Korean - Korea
  • Norwegian - Norway (Bokmal)
  • Polish - Poland
  • Portuguese - Brazil
  • Portuguese - Portugal
  • Romanian - Romania
  • Russian - Russia
  • Spanish - Spain (Traditional sort)
  • Swedish - Sweden
  • Thai - Thailand
  • Turkish - Turkey
  • Ukrainian - Ukraine
FileDescription: Steam
FileVersion: 2.10.91.91
LegalCopyright: © Valve Corporation
ProductName: Steam

DOS Header

Magic number: MZ
Bytes on last page of file: 0x0090
Pages in file: 0x0003
Relocations: 0x0000
Size of header: 0x0004
Min extra paragraphs: 0x0000
Max extra paragraphs: 0xFFFF
Initial SS value: 0x0000
Initial SP value: 0x00B8
Checksum: 0x0000
Initial IP value: 0x0000
Initial CS value: 0x0000
Overlay number: 0x0000
OEM identifier: 0x0000
OEM information: 0x0000
Address of NE header: 0x000000C8

PE Headers

Signature: PE
Machine: IMAGE_FILE_MACHINE_I386
Number of sections: 5
Time date stamp: 25-Jul-2016 00:55:51
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE
  • IMAGE_FILE_LINE_NUMS_STRIPPED
  • IMAGE_FILE_LOCAL_SYMS_STRIPPED
  • IMAGE_FILE_RELOCS_STRIPPED

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00001000
0x0000615D
0x00006200
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.45023
.rdata
0x00008000
0x000013A4
0x00001400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
5.163
.data
0x0000A000
0x00020338
0x00000600
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
3.9824
.ndata
0x0002B000
0x00038000
0x00000000
IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE
0
.rsrc
0x00063000
0x00012D48
0x00012E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
6.21587

Resources

Title
Entropy
Size
Codepage
Language
Type
1
5.28717
1069
UNKNOWN
English - United States
RT_MANIFEST
2
5.48879
9640
UNKNOWN
English - United States
RT_ICON
3
4.72962
7336
UNKNOWN
English - United States
RT_ICON
4
5.942
4264
UNKNOWN
English - United States
RT_ICON
5
4.91233
3240
UNKNOWN
English - United States
RT_ICON
6
4.19177
1384
UNKNOWN
English - United States
RT_ICON
7
5.69139
1128
UNKNOWN
English - United States
RT_ICON
8
5.71619
872
UNKNOWN
English - United States
RT_ICON
9
2.35861
176
UNKNOWN
English - United States
RT_ICON
103
2.77822
132
UNKNOWN
English - United States
RT_GROUP_ICON

Imports

ADVAPI32.dll
COMCTL32.dll
GDI32.dll
KERNEL32.dll
SHELL32.dll
USER32.dll
ole32.dll
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
40
Monitored processes
5
Malicious processes
4
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start steamsetup.exe nsfa77.tmp no specs steamservice.exe steam.exe no specs steamsetup.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1308"C:\Program Files\Steam\bin\steamservice.exe" /InstallC:\Program Files\Steam\bin\steamservice.exe
nsFA77.tmp
User:
admin
Company:
Valve Corporation
Integrity Level:
HIGH
Description:
Steam Client Service
Exit code:
0
Version:
02.81.34.06
Modules
Images
c:\program files\steam\bin\steamservice.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
1656"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
2612"C:\Program Files\Steam\steam.exe" C:\Program Files\Steam\steam.exe—explorer.exe
User:
admin
Company:
Valve Corporation
Integrity Level:
MEDIUM
Description:
Steam Client Bootstrapper
Exit code:
0
Version:
03.49.64.60
Modules
Images
c:\program files\steam\steam.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ws2_32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\nsi.dll
c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\comctl32.dll
c:\windows\system32\gdi32.dll
2868"C:\Users\admin\AppData\Local\Temp\nsnCC61.tmp\nsFA77.tmp" "C:\Program Files\Steam\bin\steamservice.exe" /InstallC:\Users\admin\AppData\Local\Temp\nsnCC61.tmp\nsFA77.tmp—SteamSetup.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\nsncc61.tmp\nsfa77.tmp
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
3104"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:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
Total events
250
Read events
221
Write events
29
Delete events
0

Modification events

(PID) Process:(1308) steamservice.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\eventlog\Application\Steam Client Service
Operation:writeName:EventMessageFile
Value:
C:\Program Files\Steam\bin\steamservice.exe
(PID) Process:(1308) steamservice.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\eventlog\Application\Steam Client Service
Operation:writeName:TypesSupported
Value:
7
(PID) Process:(3104) SteamSetup.exeKey:HKEY_CURRENT_USER\Software\Valve\Steam
Operation:writeName:Language
Value:
english
(PID) Process:(3104) SteamSetup.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Valve\Steam
Operation:writeName:Language
Value:
english
(PID) Process:(3104) SteamSetup.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Steam
Value:
"C:\Program Files\Steam\steam.exe" -silent
(PID) Process:(3104) SteamSetup.exeKey:HKEY_CURRENT_USER\Software\Valve\Steam
Operation:writeName:SteamInstaller
Value:
SteamSetup.exe
(PID) Process:(1308) steamservice.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Valve\Steam
Operation:writeName:InstallPath
Value:
C:\Program Files\Steam
(PID) Process:(1308) steamservice.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\steam
Operation:writeName:
Value:
URL:steam protocol
(PID) Process:(1308) steamservice.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\steam
Operation:writeName:URL Protocol
Value:
(PID) Process:(1308) steamservice.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\steam\DefaultIcon
Operation:writeName:
Value:
steam.exe
Executable files
10
Suspicious files
0
Text files
30
Unknown types
2

Dropped files

PID
Process
Filename
Type
3104SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnCC61.tmp\modern-header.bmpimage
MD5:DA3486D12BB4C8AEC16BD9E0D363D23F
SHA256:D93B76D51BD2214FA6E999C1BF70B4AFF5165A6542F9B9B2A92B5672601F4624
3104SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnCC61.tmp\modern-wizard.bmpimage
MD5:3614A4BE6B610F1DAF6C801574F161FE
SHA256:16E0EDC9F47E6E95A9BCAD15ADBDC46BE774FBCD045DD526FC16FC38FDC8D49B
3104SteamSetup.exeC:\Program Files\Steam\public\steambootstrapper_brazilian.txttext
MD5:7E4AFEF4B27936DB4FBF7C7BB069697E
SHA256:0CF387CCE425E0849B9592696F07476B46DCA6DF65F34427A4B4CBBACE349AB5
3104SteamSetup.exeC:\Program Files\Steam\public\steambootstrapper_danish.txttext
MD5:D01A820B7BE78E208952A7BDEA47E2A8
SHA256:A6CE02CD2A342A2E2E60B42B18417B006C681CF233877B51B59DB44AEA0ED620
3104SteamSetup.exeC:\Program Files\Steam\public\steambootstrapper_english.txttext
MD5:6DF4E3EBC6D7C96FE41C4C5213F17EFA
SHA256:6387F9AFF0226A5226D5D4F0FBE77AC80797CA621F0892034F38F0BF2370E4E1
3104SteamSetup.exeC:\Program Files\Steam\public\steambootstrapper_finnish.txttext
MD5:7F204E6A6A4AC5A2FC34D59D43EE5450
SHA256:C2790C350BA7D917DE1A48285B91FDB7650DEF3797ACAE89F7FCDEA8CFDD24D6
3104SteamSetup.exeC:\Program Files\Steam\bin\SteamService.exeexecutable
MD5:0A3544D7E9AF7D8C991C904339157EDC
SHA256:1E1DE4D808AE1174B0CB37E93EBADFC98FEBCD70D612CFE393DDA513581CD123
3104SteamSetup.exeC:\Program Files\Steam\public\steambootstrapper_dutch.txttext
MD5:A24B4785C1DA9B9838CCA95099F973DE
SHA256:9C7B92B27CADCFE7AD1F47764CDA4D6F5D9C64E30507463C277581E580858A43
3104SteamSetup.exeC:\Program Files\Steam\public\steambootstrapper_czech.txttext
MD5:B02DDD5E3B43E43EE9E51E13968B7A21
SHA256:81A445A3CEB495564829CC7B0280FA993974B33476B85EDCDF87F738CA82705B
3104SteamSetup.exeC:\Users\admin\AppData\Local\Temp\nsnCC61.tmp\System.dllexecutable
MD5:A4DD044BCD94E9B3370CCF095B31F896
SHA256:2E226715419A5882E2E14278940EE8EF0AA648A3EF7AF5B3DC252674111962BC
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
17
TCP/UDP connections
4
DNS requests
2
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
302
162.254.197.16:80
http://client-download.steampowered.com/client/steam_client_win32
DE
—
—
whitelisted
—
—
GET
—
2.16.186.59:80
http://media4.steampowered.com/client/strings_all.zip.vz.5159cf5e069f614662b86c204cbdf62f82530bd6_2247452
unknown
—
—
whitelisted
—
—
GET
—
2.16.186.59:80
http://media4.steampowered.com/client/gamesforwindows_win32.zip.vz.653166c462f755f1cb2c66c6f092584b702e8e24_1217149
unknown
—
—
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/steam_client_win32?1522131979
unknown
text
7.99 Kb
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/tenfoot_dicts_all.zip.33245b7d523f68418283e93b0572508fa127ee8f
unknown
binary
11.7 Mb
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/tenfoot_misc_all.zip.1ca83d76835b4613170f5cead778b176b11f2b0c
unknown
binary
12.5 Mb
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/resources_all.zip.vz.c463b6acf76546bb745b49de7dc519735c3fa75a_1154545
unknown
binary
1.10 Mb
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/strings_en_all.zip.vz.c6b05e756f46dde404d6fde77657d8728055aa5c_87097
unknown
binary
85.0 Kb
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/public_all.zip.vz.12bfd31e0c8c260d7802f9d062386bff4b47c6cb_760985
unknown
binary
743 Kb
whitelisted
—
—
GET
200
2.16.186.59:80
http://media4.steampowered.com/client/tenfoot_fonts_all.zip.vz.7673e4cd32b6752bc621d8bc1a7118a9af19b64a_12077027
unknown
binary
11.5 Mb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
—
—
162.254.197.16:80
client-download.steampowered.com
Valve Corporation
DE
unknown
—
—
2.16.186.59:80
media4.steampowered.com
Akamai International B.V.
—
whitelisted

DNS requests

Domain
IP
Reputation
client-download.steampowered.com
  • 162.254.197.16
  • 162.254.197.96
  • 162.254.197.17
  • 162.254.197.104
  • 162.254.197.91
  • 162.254.197.102
  • 162.254.197.92
  • 162.254.197.108
whitelisted
media4.steampowered.com
  • 2.16.186.59
  • 2.16.186.64
whitelisted

Threats

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