File name:

OInstall.exe

Full analysis: https://app.any.run/tasks/d6f32fb0-4911-4206-a090-962cfe4b112f
Verdict: Malicious activity
Analysis date: January 14, 2024, 21:30:35
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, UPX compressed
MD5:

209635421416545CB239F7484909FCF8

SHA1:

850FB53685BC7E70FE267AAED72F45AE7589EE03

SHA256:

E71D9DAE0AE73CA4950FD14CC868DE8FFDC25985C93B033994631271C74C98E7

SSDEEP:

196608:O09sOIeV8WTmnAyv+T9hq6F7ZPXLmohRlQ:jsOIOTmnPv+xhqcZPXtlQ

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

    • Drops the executable file immediately after the start

      • OInstall.exe (PID: 2268)
      • files.dat (PID: 1632)

  • SUSPICIOUS

    • Drops 7-zip archiver for unpacking

      • OInstall.exe (PID: 2268)

    • Executable content was dropped or overwritten

      • OInstall.exe (PID: 2268)
      • files.dat (PID: 1632)

    • The executable file from the user directory is run by the CMD process

      • files.dat (PID: 1632)

    • Starts CMD.EXE for commands execution

      • OInstall.exe (PID: 2268)

    • Uses REG/REGEDIT.EXE to modify registry

      • OInstall.exe (PID: 2268)

    • Starts application with an unusual extension

      • cmd.exe (PID: 480)

    • The process drops C-runtime libraries

      • files.dat (PID: 1632)

    • Process drops legitimate windows executable

      • files.dat (PID: 1632)
      • OInstall.exe (PID: 2268)

    • Probably download files using WebClient

      • OInstall.exe (PID: 2268)

    • Starts POWERSHELL.EXE for commands execution

      • OInstall.exe (PID: 2268)

    • Reads the Internet Settings

      • powershell.exe (PID: 3128)
      • powershell.exe (PID: 1556)
      • powershell.exe (PID: 2852)
      • powershell.exe (PID: 1584)

    • The Powershell connects to the Internet

      • powershell.exe (PID: 1556)
      • powershell.exe (PID: 1584)
      • powershell.exe (PID: 2852)
      • powershell.exe (PID: 3128)

    • Unusual connection from system programs

      • powershell.exe (PID: 2852)
      • powershell.exe (PID: 1584)
      • powershell.exe (PID: 1556)
      • powershell.exe (PID: 3128)

  • INFO

    • Checks supported languages

      • OInstall.exe (PID: 2268)
      • files.dat (PID: 1632)

    • Reads the computer name

      • OInstall.exe (PID: 2268)

    • Reads Environment values

      • OInstall.exe (PID: 2268)

    • Create files in a temporary directory

      • OInstall.exe (PID: 2268)
      • files.dat (PID: 1632)
      • expand.exe (PID: 1784)
      • expand.exe (PID: 240)
      • expand.exe (PID: 3016)

    • Creates files in the program directory

      • OInstall.exe (PID: 2268)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | UPX compressed Win32 Executable (76)
.exe | Win32 Executable (generic) (12.6)
.exe | Generic Win/DOS Executable (5.6)
.exe | DOS Executable Generic (5.6)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2023:09:15 06:09:08+02:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 2.5
CodeSize: 15802368
InitializedDataSize: 90112
UninitializedDataSize: 16822272
EntryPoint: 0x1f1db90
OSVersion: 4
ImageVersion: -
SubsystemVersion: 5
Subsystem: Windows GUI
FileVersionNumber: 7.7.2.0
ProductVersionNumber: 7.7.2.0
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Unknown (0)
ObjectFileType: Unknown
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
ProductName: Office 2013-2021 C2R Install
FileDescription: Office 2013-2021 C2R Install
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
68
Monitored processes
18
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
start oinstall.exe reg.exe no specs cmd.exe no specs files.dat powershell.exe expand.exe no specs powershell.exe no specs powershell.exe expand.exe no specs powershell.exe no specs cmd.exe no specs regedit.exe no specs reg.exe no specs powershell.exe expand.exe no specs powershell.exe no specs powershell.exe oinstall.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
240"expand" v32.cab -F:VersionDescriptor.xml C:\Users\admin\AppData\Local\Temp\over7247566C:\Windows\System32\expand.exe—OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
LZ Expansion Utility
Exit code:
0
Version:
6.1.7601.24535 (win7sp1_ldr_escrow.191105-1059)
Modules
Images
c:\windows\system32\expand.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\cabinet.dll
480"C:\Windows\System32\cmd.exe" /D /c files.dat -y -pkmsautoC:\Windows\System32\cmd.exe—OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows Command Processor
Exit code:
0
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
1380"C:\Windows\System32\reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows Script Host\Settings" /v Enabled /t REG_DWORD /d 1 /fC:\Windows\System32\reg.exe—OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Registry Console Tool
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\reg.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\user32.dll
c:\windows\system32\gdi32.dll
1408"powershell" -command "& { Get-Content C:\Users\admin\AppData\Local\Temp\over177436\VersionDescriptor.xml | Set-Content -Encoding ASCII v32.txt }C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe—OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.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\atl.dll
c:\windows\system32\user32.dll
1556"powershell" -command "& { (New-Object Net.WebClient).DownloadFile('http://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/Office/Data/v32.cab', 'C:\Users\admin\AppData\Local\Temp\over7247566\v32.cab') }"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.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\atl.dll
c:\windows\system32\user32.dll
1584"powershell" -command "& { (New-Object Net.WebClient).DownloadFile('http://officecdn.microsoft.com/pr/5030841d-c919-4594-8d2d-84ae4f96e58e/Office/Data/v32.cab', 'C:\Users\admin\AppData\Local\Temp\over6591861\v32.cab') }"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.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\atl.dll
c:\windows\system32\user32.dll
1632files.dat -y -pkmsautoC:\Users\admin\AppData\Local\Temp\files\files.dat
cmd.exe
User:
admin
Company:
Igor Pavlov
Integrity Level:
HIGH
Description:
7z Console SFX
Exit code:
0
Version:
18.05
Modules
Images
c:\users\admin\appdata\local\temp\files\files.dat
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\ole32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
1656"powershell" -command "& { Get-Content C:\Users\admin\AppData\Local\Temp\over6591861\VersionDescriptor.xml | Set-Content -Encoding ASCII v32.txt }C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe—OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Windows PowerShell
Exit code:
0
Version:
10.0.14409.1005 (rs1_srvoob.161208-1155)
Modules
Images
c:\windows\system32\windowspowershell\v1.0\powershell.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\atl.dll
c:\windows\system32\user32.dll
1784"expand" v32.cab -F:VersionDescriptor.xml C:\Users\admin\AppData\Local\Temp\over6591861C:\Windows\System32\expand.exe—OInstall.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
LZ Expansion Utility
Exit code:
0
Version:
6.1.7601.24535 (win7sp1_ldr_escrow.191105-1059)
Modules
Images
c:\windows\system32\expand.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\cabinet.dll
2044"C:\Users\admin\AppData\Local\Temp\OInstall.exe" C:\Users\admin\AppData\Local\Temp\OInstall.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Office 2013-2021 C2R Install
Exit code:
3221226540
Modules
Images
c:\users\admin\appdata\local\temp\oinstall.exe
c:\windows\system32\ntdll.dll
Total events
5 318
Read events
5 315
Write events
3
Delete events
0

Modification events

(PID) Process:(2268) OInstall.exeKey:HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\DirectSound\Speaker Configuration
Operation:writeName:Speaker Configuration
Value:
4
Executable files
7
Suspicious files
18
Text files
17
Unknown types
0

Dropped files

PID
Process
Filename
Type
2268OInstall.exeC:\Users\admin\AppData\Local\Temp\files\files.datexecutable
MD5:BB5569B15D68C10B7FF2D96B45825120
SHA256:4E3B13B56BEC0E41778E6506430282BBBD75CCAA600FD4B645CE37DD95B44C8E
1584powershell.exeC:\Users\admin\AppData\Local\Temp\over6591861\v32.cabcompressed
MD5:E9E084E4196FEBA820AB0F51E47AA2C9
SHA256:9453C7D0E5A2015825C909EA53603D7D6111B4F2A3C346CE36493A86715A4D0F
1632files.datC:\Users\admin\AppData\Local\Temp\files\x86\msvcr100.dllexecutable
MD5:BF38660A9125935658CFA3E53FDC7D65
SHA256:60C06E0FA4449314DA3A0A87C1A9D9577DF99226F943637E06F61188E5862EFA
2268OInstall.exeC:\Users\admin\AppData\Local\Temp\files\setup.exeexecutable
MD5:42E491A02ADA4560F31FFA389A12F8A8
SHA256:AF196EECB1FBEC2BE1F3088E755AF97A27F04EA4A744DA39C3715832AC4D8FF7
1632files.datC:\Users\admin\AppData\Local\Temp\files\x64\msvcr100.dllexecutable
MD5:DF3CA8D16BDED6A54977B30E66864D33
SHA256:1D1A1AE540BA132F998D60D3622F0297B6E86AE399332C3B47462D7C0F560A36
1632files.datC:\Users\admin\AppData\Local\Temp\files\x86\cleanospp.exeexecutable
MD5:98821A7A5737D656633D10A3AFB724BD
SHA256:04BA4487F95290E0B0557B44300C18F637FBAF0872EE96E3111013B8A1539F25
2268OInstall.exeC:\Users\admin\AppData\Local\Temp\files\Configure.xmltext
MD5:F693E4FB8D3907E6CC44A34E1CC87296
SHA256:CDCD3FA3CB1EBFAFC98273AE52632F80B95CB9D25933EE1C7D2FDEC640B264D0
1584powershell.exeC:\Users\admin\AppData\Local\Temp\oj2xfofc.y44.ps1binary
MD5:C4CA4238A0B923820DCC509A6F75849B
SHA256:—
1584powershell.exeC:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractivebinary
MD5:446DD1CF97EABA21CF14D03AEBC79F27
SHA256:A7DE5177C68A64BD48B36D49E2853799F4EBCFA8E4761F7CC472F333DC5F65CF
1632files.datC:\Users\admin\AppData\Local\Temp\files\Uninstall.xmltext
MD5:364F86F97324EA82FE0D142CD01CF6DD
SHA256:09D5B42140BAB13165BA97FBD0E77792304C3C93555BE02C3DCE21A7A69C66DD
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
8
DNS requests
1
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
1584
powershell.exe
GET
200
152.199.21.175:80
http://officecdn.microsoft.com/pr/5030841d-c919-4594-8d2d-84ae4f96e58e/Office/Data/v32.cab
unknown
compressed
10.9 Kb
unknown
1556
powershell.exe
GET
200
152.199.21.175:80
http://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/Office/Data/v32.cab
unknown
compressed
11.2 Kb
unknown
3128
powershell.exe
GET
—
152.199.21.175:80
http://officecdn.microsoft.com/pr/5030841d-c919-4594-8d2d-84ae4f96e58e/Office/Data/16.0.14332.20624/i320.cab
unknown
—
—
unknown
2852
powershell.exe
GET
200
152.199.21.175:80
http://officecdn.microsoft.com/pr/5030841d-c919-4594-8d2d-84ae4f96e58e/Office/Data/v32.cab
unknown
compressed
10.9 Kb
unknown
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
4
System
192.168.100.255:138
—
—
—
whitelisted
1080
svchost.exe
224.0.0.252:5355
—
—
—
unknown
1584
powershell.exe
152.199.21.175:80
officecdn.microsoft.com
EDGECAST
DE
whitelisted
1556
powershell.exe
152.199.21.175:80
officecdn.microsoft.com
EDGECAST
DE
whitelisted
2852
powershell.exe
152.199.21.175:80
officecdn.microsoft.com
EDGECAST
DE
whitelisted
3128
powershell.exe
152.199.21.175:80
officecdn.microsoft.com
EDGECAST
DE
whitelisted

DNS requests

Domain
IP
Reputation
officecdn.microsoft.com
  • 152.199.21.175
whitelisted

Threats

No threats detected
No debug info
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Reports
OInstall.exe