| File name: | BO6 Silent Chair.exe |
| Full analysis: | https://app.any.run/tasks/28b14a5c-3c78-462b-a8bc-5ac3cf87587d |
| Verdict: | Malicious activity |
| Analysis date: | November 10, 2024, 23:21:33 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32+ executable (console) x86-64, for MS Windows, 9 sections |
| MD5: | 88BAF138550DAC32FF1604DBA1824831 |
| SHA1: | 74E3FCC5E11B91A1DD965C115A0D8547B6470125 |
| SHA256: | 589E2CF5D697FDBF1A97EBF7DCD099E4DDFEB56E3E2B6CC0F2A006AF756E3511 |
| SSDEEP: | 98304:G6EIGaxqyccotNod9mMTUcoGvlN5NQ17XsfRSpgHB/gC4C13otjOteNVvS9jqvTL:GedxOSJL |
MALICIOUS
No malicious indicators.SUSPICIOUS
Starts CMD.EXE for commands execution
- BO6 Silent Chair.exe (PID: 6692)
INFO
Reads the computer name
- BO6 Silent Chair.exe (PID: 6692)
Gets the hash of the file via CERTUTIL.EXE
- certutil.exe (PID: 5512)
Checks supported languages
- BO6 Silent Chair.exe (PID: 6692)
Creates files in the program directory
- BO6 Silent Chair.exe (PID: 6692)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (87.3) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (6.3) |
| .exe | | | DOS Executable Generic (6.3) |
EXIF
EXE
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2024:11:04 16:09:46+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32+ |
| LinkerVersion: | 14.41 |
| CodeSize: | 746496 |
| InitializedDataSize: | 240640 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x525610 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows command line |
Total processes
139
Monitored processes
9
Malicious processes
0
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 300 | "C:\Users\admin\AppData\Local\Temp\BO6 Silent Chair.exe" | C:\Users\admin\AppData\Local\Temp\BO6 Silent Chair.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 3221226540 Modules
| |||||||||||||||
| 2172 | C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache | C:\Windows\System32\svchost.exe | services.exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Host Process for Windows Services Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5036 | C:\WINDOWS\system32\cmd.exe /c certutil -hashfile "C:\Users\admin\AppData\Local\Temp\BO6 Silent Chair.exe" MD5 | find /i /v "md5" | find /i /v "certutil" | C:\Windows\System32\cmd.exe | — | BO6 Silent Chair.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5512 | certutil -hashfile "C:\Users\admin\AppData\Local\Temp\BO6 Silent Chair.exe" MD5 | C:\Windows\System32\certutil.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: CertUtil.exe Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5896 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | BO6 Silent Chair.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
| |||||||||||||||
| 6240 | C:\WINDOWS\system32\cmd.exe /c CLS | C:\Windows\System32\cmd.exe | — | BO6 Silent Chair.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows Command Processor Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6692 | "C:\Users\admin\AppData\Local\Temp\BO6 Silent Chair.exe" | C:\Users\admin\AppData\Local\Temp\BO6 Silent Chair.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 1 Modules
| |||||||||||||||
| 6740 | find /i /v "certutil" | C:\Windows\System32\find.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Find String (grep) Utility Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6772 | find /i /v "md5" | C:\Windows\System32\find.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Find String (grep) Utility Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
549
Read events
545
Write events
4
Delete events
0
Modification events
| (PID) Process: | (5512) certutil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.1!7 |
| Operation: | write | Name: | Name |
Value: szOID_ROOT_PROGRAM_AUTO_UPDATE_CA_REVOCATION | |||
| (PID) Process: | (5512) certutil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.2!7 |
| Operation: | write | Name: | Name |
Value: szOID_ROOT_PROGRAM_AUTO_UPDATE_END_REVOCATION | |||
| (PID) Process: | (5512) certutil.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\OID\EncodingType 0\CryptDllFindOIDInfo\1.3.6.1.4.1.311.60.3.3!7 |
| Operation: | write | Name: | Name |
Value: szOID_ROOT_PROGRAM_NO_OCSP_FAILOVER_TO_CRL | |||
| (PID) Process: | (6692) BO6 Silent Chair.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\869628 |
| Operation: | write | Name: | 869628 |
Value: 869628 | |||
Executable files
0
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6692 | BO6 Silent Chair.exe | C:\ProgramData\869628 | text | |
MD5:38A3607798337F80F255D9E8BDA8F71A | SHA256:6C8E1DA4D1AB0E8E435029A082482D4D1C02BE20EEEC348E94D340FA81936B52 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
33
DNS requests
18
Threats
3
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1552 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | US | binary | 471 b | whitelisted |
— | — | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | US | binary | 312 b | whitelisted |
696 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | DE | binary | 418 b | whitelisted |
696 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | DE | binary | 408 b | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 23.48.23.143:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | DE | binary | 1.01 Kb | whitelisted |
5488 | MoUsoCoreWorker.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | DE | binary | 973 b | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
6944 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
1764 | RUXIMICS.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
5488 | MoUsoCoreWorker.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4360 | SearchApp.exe | 104.126.37.123:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
— | — | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
6692 | BO6 Silent Chair.exe | 104.26.0.5:443 | keyauth.win | CLOUDFLARENET | US | malicious |
1552 | svchost.exe | 40.126.31.69:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
1552 | svchost.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
google.com |
| whitelisted |
keyauth.win |
| malicious |
login.live.com |
| whitelisted |
th.bing.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2172 | svchost.exe | Potentially Bad Traffic | ET INFO KeyAuth Open-source Authentication System Domain in DNS Lookup (keyauth .win) |
6692 | BO6 Silent Chair.exe | Potentially Bad Traffic | ET INFO KeyAuth Open-source Authentication System Domain (keyauth .win) in TLS SNI |
6692 | BO6 Silent Chair.exe | Potentially Bad Traffic | ET INFO KeyAuth Open-source Authentication System Domain (keyauth .win) in TLS SNI |