| File name: | sigma.exe |
| Full analysis: | https://app.any.run/tasks/846bc38f-b546-4d86-8d38-835160f7d900 |
| Verdict: | Malicious activity |
| Threats: | Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely. |
| Analysis date: | August 01, 2025, 04:44:50 |
| OS: | Windows 10 Professional (build: 19044, 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: | 8A04E5BD093B7914E819545D8994B06A |
| SHA1: | A2E46225ADF7420B06F5D5B3BBCEE40AC4EFD50D |
| SHA256: | 447D6626A88B81521710AEF6CB0C02E589DD4E221D328FC10D79910AA907FD2B |
| SSDEEP: | 98304:g2nP6q3A6770DODdl/rADxRLDgFiDrGE:3Ug0rj |
MALICIOUS
QUASAR has been detected (YARA)
- sigma.exe (PID: 5436)
SUSPICIOUS
No suspicious indicators.INFO
Reads Environment values
- sigma.exe (PID: 5436)
Reads the computer name
- sigma.exe (PID: 5436)
Reads the machine GUID from the registry
- sigma.exe (PID: 5436)
Checks supported languages
- sigma.exe (PID: 5436)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(5436) sigma.exe
Version1.4.1
C2 (2)149.75.244.130:4782
Sub_DirWindows
Install_Namex64Update.exe
Mutex9450f07d-dc9a-41de-a694-34877ef00e1f
StartupUpdate
TagOffice04
LogDirLogs
SignatureJUH9JKSK72T60jiTObL29D8WQI20lrjHrAfp9maUJv+2J1LXMZTEJHVcm6P7GLdSqAuFPK6bUlKFMtdkgNcLlwtGvQ4vL20DkNBQxtm+bT6W0wcZMw0SIeh668+9+W6dyLvjQPBLmcTJhtLlQ4MHQsd1huiPUfQt9frZZuUOgAhxBnPm7myPS99OxsBoQKqDBUaEt9R1GouOvg01BifOcQJNjL25qNZ7id59Wt49SMANd9mUfigsIjiuU7EJu7GplPX5jjsKF79qnRRlgR20pJaxbOsz/r8EzncCbUKssloc...
CertificateMIIE9DCCAtygAwIBAgIQAIu44bZ9xM2ktXABwVVRRzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDczMDA0MjgwNFoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtzxuFQR+k851IMu+J59osdR9F50tGTUGPY2tZY0s4pgjuIPBw92l0dYm2s6beNtEig8kUdyb...
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2023:03:12 16:16:39+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 3261440 |
| InitializedDataSize: | 172032 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x31e3ce |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 9.2.6.8 |
| ProductVersionNumber: | 18.2.5.2 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | Microsoft |
| FileDescription: | System Update |
| FileVersion: | 9.2.6.8 |
| InternalName: | - |
| LegalCopyright: | Microsoft Corporation |
| LegalTrademarks: | - |
| OriginalFileName: | - |
| ProductName: | Windows Update |
| ProductVersion: | 18.2.5.2 |
| AssemblyVersion: | 18.2.5.2 |
Total processes
138
Monitored processes
2
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 436 | C:\WINDOWS\System32\slui.exe -Embedding | C:\Windows\System32\slui.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Activation Client Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5436 | "C:\Users\admin\AppData\Local\Temp\sigma.exe" | C:\Users\admin\AppData\Local\Temp\sigma.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Integrity Level: MEDIUM Description: System Update Version: 9.2.6.8 Modules
Quasar(PID) Process(5436) sigma.exe Version1.4.1 C2 (2)149.75.244.130:4782 Sub_DirWindows Install_Namex64Update.exe Mutex9450f07d-dc9a-41de-a694-34877ef00e1f StartupUpdate TagOffice04 LogDirLogs SignatureJUH9JKSK72T60jiTObL29D8WQI20lrjHrAfp9maUJv+2J1LXMZTEJHVcm6P7GLdSqAuFPK6bUlKFMtdkgNcLlwtGvQ4vL20DkNBQxtm+bT6W0wcZMw0SIeh668+9+W6dyLvjQPBLmcTJhtLlQ4MHQsd1huiPUfQt9frZZuUOgAhxBnPm7myPS99OxsBoQKqDBUaEt9R1GouOvg01BifOcQJNjL25qNZ7id59Wt49SMANd9mUfigsIjiuU7EJu7GplPX5jjsKF79qnRRlgR20pJaxbOsz/r8EzncCbUKssloc... CertificateMIIE9DCCAtygAwIBAgIQAIu44bZ9xM2ktXABwVVRRzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDczMDA0MjgwNFoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtzxuFQR+k851IMu+J59osdR9F50tGTUGPY2tZY0s4pgjuIPBw92l0dYm2s6beNtEig8kUdyb... | |||||||||||||||
Total events
396
Read events
396
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
23
DNS requests
15
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
6176 | svchost.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
1268 | svchost.exe | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
1268 | svchost.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6796 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
6796 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | 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 |
1268 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4944 | RUXIMICS.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
5944 | MoUsoCoreWorker.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
6176 | svchost.exe | 40.126.31.128:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6176 | svchost.exe | 184.30.131.245:80 | ocsp.digicert.com | AKAMAI-AS | US | whitelisted |
1268 | svchost.exe | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
1268 | svchost.exe | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
2336 | svchost.exe | 172.211.123.249:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
self.events.data.microsoft.com |
| whitelisted |