| File name: | taskhostw.exe |
| Full analysis: | https://app.any.run/tasks/63ff1eb2-e87b-449c-a842-d006bd0cc671 |
| Verdict: | Malicious activity |
| Threats: | AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions. |
| Analysis date: | November 24, 2024, 11:13:45 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections |
| MD5: | 82422964D0D8876549DFBF83782FC67E |
| SHA1: | CCC4D794069B801C27C416A41C536371D7DF15C4 |
| SHA256: | 10C1443593CA1459CACCCB259B72C1B3ABDDAFFEA54CAD62E15C92513EB3022D |
| SSDEEP: | 49152:Ddo7RPY2uikNeRyd72MlsLDil92m3GjNsz/3DgsPkm9nHKOInbAGhPig1rAxzbs3:P2uiieRyd72QsLDil92m3GJEDg+sSY |
MALICIOUS
Changes the autorun value in the registry
- taskhostw.exe (PID: 1412)
- taskhostw.exe (PID: 3420)
ASYNCRAT has been detected (SURICATA)
- taskhostw.exe (PID: 1412)
Connects to the CnC server
- taskhostw.exe (PID: 1412)
QUASAR has been detected (SURICATA)
- taskhostw.exe (PID: 1412)
QUASAR has been detected (YARA)
- taskhostw.exe (PID: 1412)
SUSPICIOUS
Checks for external IP
- svchost.exe (PID: 2192)
Connects to unusual port
- taskhostw.exe (PID: 1412)
Contacting a server suspected of hosting an CnC
- taskhostw.exe (PID: 1412)
The system shut down or reboot
- taskhostw.exe (PID: 1412)
Executable content was dropped or overwritten
- taskhostw.exe (PID: 3420)
Starts itself from another location
- taskhostw.exe (PID: 3420)
INFO
Reads the computer name
- taskhostw.exe (PID: 3420)
- taskhostw.exe (PID: 1412)
Reads Environment values
- taskhostw.exe (PID: 3420)
- taskhostw.exe (PID: 1412)
Checks supported languages
- taskhostw.exe (PID: 3420)
- taskhostw.exe (PID: 1412)
Reads the machine GUID from the registry
- taskhostw.exe (PID: 3420)
- taskhostw.exe (PID: 1412)
Checks proxy server information
- taskhostw.exe (PID: 1412)
The process uses the downloaded file
- taskhostw.exe (PID: 1412)
- taskhostw.exe (PID: 3420)
Reads the software policy settings
- taskhostw.exe (PID: 1412)
Disables trace logs
- taskhostw.exe (PID: 1412)
Creates files or folders in the user directory
- taskhostw.exe (PID: 3420)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(1412) taskhostw.exe
Version1.4.1
C2 (2)cimpanzeauanebuna23.asuscomm.com:4782
Sub_DirMicrosoft\Engines\TTS
Install_Nametaskhostw.exe
Mutex50ea8f6e-fb04-4089-910f-1eb70b61744d
Startuptaskhostw
TagOffice04
LogDirLogs
SignatureRK4O//0M0f0UIvjul28kYirAICDGxEcevqAmahXp3v7tQa2enEKriDNQrlWJUkk85R73ZHMXatA0i9YJa/nUBwv+LL69Yk3TClyXQejbFLoVKDBxsUDzJ3U991BjMNMc/yp2phkwxrSdKE/3dQOrkX0fl0DVCKfHFamS9Q8xFp9lRZ7vWmFKzMWt6b1JbVzsQrnoy8XJnnWXKaVhA3ud+K7AioMbrWe1IwapfEr1GoHBo1IcTfMvwds7rVabNvdmIytxjWXETOOHew/penB4EPx/T0kE5qNfpf+PxNUcXGY6...
CertificateMIIE9DCCAtygAwIBAgIQAMjgHeFZUT75Q6MitiaXUzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MTEyMjAxMzMyM1oYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnK+YKrqXp6DXWM7lpgarNhRYqzwFRe2oEhphw8sCOi4gksdKvFR3C7D8/6E6XwpVHGmibuKG...
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:11:24 01:38:25+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 3261952 |
| InitializedDataSize: | 3584 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x31e41e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 1.4.1.0 |
| ProductVersionNumber: | 1.4.1.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | Quasar Client |
| FileVersion: | 1.4.1 |
| InternalName: | Client.exe |
| LegalCopyright: | Copyright © MaxXor 2023 |
| LegalTrademarks: | - |
| OriginalFileName: | Client.exe |
| ProductName: | Quasar |
| ProductVersion: | 1.4.1 |
| AssemblyVersion: | 1.4.1.0 |
Total processes
128
Monitored processes
5
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1412 | "C:\Users\admin\AppData\Roaming\Microsoft\Engines\TTS\taskhostw.exe" | C:\Users\admin\AppData\Roaming\Microsoft\Engines\TTS\taskhostw.exe | taskhostw.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Exit code: 1073807364 Version: 1.4.1 Modules
Quasar(PID) Process(1412) taskhostw.exe Version1.4.1 C2 (2)cimpanzeauanebuna23.asuscomm.com:4782 Sub_DirMicrosoft\Engines\TTS Install_Nametaskhostw.exe Mutex50ea8f6e-fb04-4089-910f-1eb70b61744d Startuptaskhostw TagOffice04 LogDirLogs SignatureRK4O//0M0f0UIvjul28kYirAICDGxEcevqAmahXp3v7tQa2enEKriDNQrlWJUkk85R73ZHMXatA0i9YJa/nUBwv+LL69Yk3TClyXQejbFLoVKDBxsUDzJ3U991BjMNMc/yp2phkwxrSdKE/3dQOrkX0fl0DVCKfHFamS9Q8xFp9lRZ7vWmFKzMWt6b1JbVzsQrnoy8XJnnWXKaVhA3ud+K7AioMbrWe1IwapfEr1GoHBo1IcTfMvwds7rVabNvdmIytxjWXETOOHew/penB4EPx/T0kE5qNfpf+PxNUcXGY6... CertificateMIIE9DCCAtygAwIBAgIQAMjgHeFZUT75Q6MitiaXUzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MTEyMjAxMzMyM1oYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAnK+YKrqXp6DXWM7lpgarNhRYqzwFRe2oEhphw8sCOi4gksdKvFR3C7D8/6E6XwpVHGmibuKG... | |||||||||||||||
| 2192 | 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
| |||||||||||||||
| 3420 | "C:\Users\admin\AppData\Local\Temp\taskhostw.exe" | C:\Users\admin\AppData\Local\Temp\taskhostw.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Exit code: 3 Version: 1.4.1 Modules
| |||||||||||||||
| 6740 | "C:\Windows\System32\shutdown.exe" /s /t 0 | C:\Windows\System32\shutdown.exe | — | taskhostw.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Shutdown and Annotation Tool Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6748 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | shutdown.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
5 467
Read events
5 451
Write events
16
Delete events
0
Modification events
| (PID) Process: | (3420) taskhostw.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | taskhostw |
Value: "C:\Users\admin\AppData\Roaming\Microsoft\Engines\TTS\taskhostw.exe" | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | taskhostw |
Value: "C:\Users\admin\AppData\Roaming\Microsoft\Engines\TTS\taskhostw.exe" | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | EnableAutoFileTracing |
Value: 0 | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | EnableConsoleTracing |
Value: 0 | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | FileTracingMask |
Value: | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | ConsoleTracingMask |
Value: | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | MaxFileSize |
Value: 1048576 | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASAPI32 |
| Operation: | write | Name: | FileDirectory |
Value: %windir%\tracing | |||
| (PID) Process: | (1412) taskhostw.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\taskhostw_RASMANCS |
| Operation: | write | Name: | EnableFileTracing |
Value: 0 | |||
Executable files
1
Suspicious files
1
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3420 | taskhostw.exe | C:\Users\admin\AppData\Roaming\Microsoft\Engines\TTS\taskhostw.exe | executable | |
MD5:82422964D0D8876549DFBF83782FC67E | SHA256:10C1443593CA1459CACCCB259B72C1B3ABDDAFFEA54CAD62E15C92513EB3022D | |||
| 1412 | taskhostw.exe | C:\Users\admin\AppData\Roaming\Logs\2024-11-24 | binary | |
MD5:89805264BA521D17EC3BCA4F8A6A449E | SHA256:275EDFF438D779F72E159B6C59F306DE76C44B265FF7F7AC9F8186FE41EC9770 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
35
DNS requests
21
Threats
4
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 23.53.40.176:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.53.40.176:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
1176 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
5064 | SearchApp.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
6528 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
6528 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
5548 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%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 |
2040 | 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 |
4712 | MoUsoCoreWorker.exe | 23.53.40.176:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 23.53.40.176:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
4712 | MoUsoCoreWorker.exe | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
— | — | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
5064 | SearchApp.exe | 104.126.37.162:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
5064 | SearchApp.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |
cimpanzeauanebuna23.asuscomm.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
ipwho.is |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2192 | svchost.exe | Potentially Bad Traffic | ET INFO External IP Lookup Domain in DNS Lookup (ipwho .is) |
1412 | taskhostw.exe | Domain Observed Used for C2 Detected | ET MALWARE Generic AsyncRAT Style SSL Cert |
1412 | taskhostw.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Malicious SSL Cert (Quasar CnC) |
1412 | taskhostw.exe | Malware Command and Control Activity Detected | REMOTE [ANY.RUN] QuasarRAT Successful Connection (GCM_SHA384) |