| File name: | tutorial.exe |
| Full analysis: | https://app.any.run/tasks/34c1c9d3-c7df-4ae5-b66f-b6547eaa0680 |
| 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: | March 14, 2025, 21:34:44 |
| 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: | 4B1F6DC7C90C87CB940374C8A05342A8 |
| SHA1: | 70CC37D6A7A2002DAE85BA864A65A9C33C5CEA03 |
| SHA256: | 0C3EF70ADEBA424EACD4E7DB945BE3ED9B7DC4410DA489D15F27D7F049150FDE |
| SSDEEP: | 49152:mPo7RPY2uikNeRyd72MlsLDil92m3GjNsz/3DgS8qtEhI/fsbWszqhLoGdBNjIHv:I2uiieRyd72QsLDil92m3GJEDgJWfo |
MALICIOUS
QUASAR has been detected (SURICATA)
- Client.exe (PID: 2108)
Connects to the CnC server
- Client.exe (PID: 2108)
QUASAR has been detected (YARA)
- Client.exe (PID: 2108)
SUSPICIOUS
Starts itself from another location
- tutorial.exe (PID: 6712)
Executable content was dropped or overwritten
- tutorial.exe (PID: 6712)
Reads security settings of Internet Explorer
- Client.exe (PID: 2108)
Contacting a server suspected of hosting an CnC
- Client.exe (PID: 2108)
Potential Corporate Privacy Violation
- svchost.exe (PID: 2196)
There is functionality for taking screenshot (YARA)
- Client.exe (PID: 2108)
Connects to unusual port
- Client.exe (PID: 2108)
INFO
Checks supported languages
- tutorial.exe (PID: 6712)
- Client.exe (PID: 2108)
Creates files or folders in the user directory
- tutorial.exe (PID: 6712)
Reads Environment values
- tutorial.exe (PID: 6712)
- Client.exe (PID: 2108)
Reads the machine GUID from the registry
- tutorial.exe (PID: 6712)
- Client.exe (PID: 2108)
Checks proxy server information
- slui.exe (PID: 6036)
Reads the computer name
- tutorial.exe (PID: 6712)
- Client.exe (PID: 2108)
Reads the software policy settings
- Client.exe (PID: 2108)
- slui.exe (PID: 6036)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(2108) Client.exe
Version1.4.1
C2 (2)Dyno15-41078.portmap.host:41078
Sub_DirSubDir
Install_NameClient.exe
Mutexc972c5e5-73ff-4ecf-81fc-7484051c6dc1
StartupQuasar Client Startup
TagOffice04
LogDirLogs
SignatureejO02OSKm8UMYR3jd3pH3P0i9MhZiHAAxky2Qkosqe840+032czLh8DnQAX6Hd+q5wY+tY9SootLYxKt8CuxU80MkcXyb/JRTufKisEyT8BxvYlX/Ewh4pqHDpsHiMeJGfGjbMh9WiN5tOXA06DxnjLsaAFxZOq7GbUkATs4WINcZfuD1oeBch4QarL/sTGisCANCqFFRfzNgCeRMLOlL+yxg8KOPDPZX4na7xG1f4J1Jm3tSwbzg7a1SJxxYmy41rc7W5HCfrs7TAHE4GJ/S/bUjBDz0vLULG04FrrezXu2...
CertificateMIIE9DCCAtygAwIBAgIQAIKUOkIbEwI9LzSxojBU6zANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDMxMjIwNTc1NVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAoMedo+MXKTzhBfnXofkaudNLeHEl2xJaWDFfA2MMeNB+MuE1h8GCoOU6yix7nSPUzvVOrQRu...
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: | 2023:03:12 16:16:39+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 3261952 |
| InitializedDataSize: | 3584 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x31e40e |
| 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
124
Monitored processes
4
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2108 | "C:\Users\admin\AppData\Roaming\SubDir\Client.exe" | C:\Users\admin\AppData\Roaming\SubDir\Client.exe | tutorial.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Version: 1.4.1 Modules
Quasar(PID) Process(2108) Client.exe Version1.4.1 C2 (2)Dyno15-41078.portmap.host:41078 Sub_DirSubDir Install_NameClient.exe Mutexc972c5e5-73ff-4ecf-81fc-7484051c6dc1 StartupQuasar Client Startup TagOffice04 LogDirLogs SignatureejO02OSKm8UMYR3jd3pH3P0i9MhZiHAAxky2Qkosqe840+032czLh8DnQAX6Hd+q5wY+tY9SootLYxKt8CuxU80MkcXyb/JRTufKisEyT8BxvYlX/Ewh4pqHDpsHiMeJGfGjbMh9WiN5tOXA06DxnjLsaAFxZOq7GbUkATs4WINcZfuD1oeBch4QarL/sTGisCANCqFFRfzNgCeRMLOlL+yxg8KOPDPZX4na7xG1f4J1Jm3tSwbzg7a1SJxxYmy41rc7W5HCfrs7TAHE4GJ/S/bUjBDz0vLULG04FrrezXu2... CertificateMIIE9DCCAtygAwIBAgIQAIKUOkIbEwI9LzSxojBU6zANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDMxMjIwNTc1NVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAoMedo+MXKTzhBfnXofkaudNLeHEl2xJaWDFfA2MMeNB+MuE1h8GCoOU6yix7nSPUzvVOrQRu... | |||||||||||||||
| 2196 | 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
| |||||||||||||||
| 6036 | 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 Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6712 | "C:\Users\admin\Desktop\tutorial.exe" | C:\Users\admin\Desktop\tutorial.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Exit code: 3 Version: 1.4.1 Modules
| |||||||||||||||
Total events
7 159
Read events
7 159
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6712 | tutorial.exe | C:\Users\admin\AppData\Roaming\SubDir\Client.exe | executable | |
MD5:4B1F6DC7C90C87CB940374C8A05342A8 | SHA256:0C3EF70ADEBA424EACD4E7DB945BE3ED9B7DC4410DA489D15F27D7F049150FDE | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
3
TCP/UDP connections
45
DNS requests
8
Threats
3
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2104 | svchost.exe | GET | 200 | 23.48.23.156:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | POST | 500 | 40.91.76.224:443 | https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail | unknown | xml | 512 b | whitelisted |
— | — | POST | 500 | 40.91.76.224:443 | https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail | unknown | xml | 512 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 |
|---|---|---|---|---|---|---|
2104 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2104 | svchost.exe | 23.48.23.156:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
2108 | Client.exe | 193.161.193.99:41078 | Dyno15-41078.portmap.host | OOO Bitree Networks | RU | malicious |
2104 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5132 | slui.exe | 40.91.76.224:443 | activation-v2.sls.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
6036 | slui.exe | 20.83.72.98:443 | activation-v2.sls.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
Dyno15-41078.portmap.host |
| malicious |
activation-v2.sls.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potential Corporate Privacy Violation | ET INFO DNS Query to a Reverse Proxy Service Observed |
— | — | Misc activity | ET INFO DNS Query for Port Mapping/Tunneling Service Domain (.portmap .host) |
— | — | Domain Observed Used for C2 Detected | ET MALWARE Observed Malicious SSL Cert (Quasar CnC) |