| File name: | SOLARAV3.exe |
| Full analysis: | https://app.any.run/tasks/a9399043-bc73-4798-a6c6-5cba57603810 |
| 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 18, 2024, 14:28:09 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | E7F36D061CA7ED589B64C53C49AE7652 |
| SHA1: | 6EBE935D1F6BEBC21F99D1FF44295A1BE31973E1 |
| SHA256: | A85316296BA9C6594BBD38E5DF013B44F455D32473A3898F45E5FB884B2E3DB6 |
| SSDEEP: | 98304:h2NkKCmRf7uY1+DVlYZ+hHaIDgpCe9YGgpL:vXg6 |
MALICIOUS
Changes the autorun value in the registry
- SOLARAV3.exe (PID: 6472)
- Mailstealer.exe (PID: 6500)
QUASAR has been detected (YARA)
- Mailstealer.exe (PID: 6500)
Connects to the CnC server
- Mailstealer.exe (PID: 6500)
QUASAR has been detected (SURICATA)
- Mailstealer.exe (PID: 6500)
SUSPICIOUS
Drops the executable file immediately after the start
- SOLARAV3.exe (PID: 6472)
Contacting a server suspected of hosting an CnC
- Mailstealer.exe (PID: 6500)
Reads security settings of Internet Explorer
- Mailstealer.exe (PID: 6500)
Potential Corporate Privacy Violation
- svchost.exe (PID: 2256)
Starts itself from another location
- SOLARAV3.exe (PID: 6472)
Connects to unusual port
- Mailstealer.exe (PID: 6500)
Executable content was dropped or overwritten
- SOLARAV3.exe (PID: 6472)
INFO
Reads the computer name
- SOLARAV3.exe (PID: 6472)
- Mailstealer.exe (PID: 6500)
Creates files or folders in the user directory
- SOLARAV3.exe (PID: 6472)
Checks supported languages
- SOLARAV3.exe (PID: 6472)
- Mailstealer.exe (PID: 6500)
Reads Environment values
- Mailstealer.exe (PID: 6500)
- SOLARAV3.exe (PID: 6472)
Reads the machine GUID from the registry
- SOLARAV3.exe (PID: 6472)
- Mailstealer.exe (PID: 6500)
Reads the software policy settings
- Mailstealer.exe (PID: 6500)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(6500) Mailstealer.exe
Version1.4.1
C2 (2)Dejvo213455-46018.portmap.host:46018
Sub_DirSubDir
Install_NameMailstealer.exe
Mutexaac3bb4d-0825-430a-bb2a-fb60e2f5c422
StartupMailstealer
TagOffice04
LogDirLogs
SignaturekwC/AiV8pbfb0ySC9gSCH7u+12fP5QNz32cbJ9aAbhrB1DSkS2H+TsFPDzMDeHz2JVxVvuH1FMQMDB+bUt0WiiP5DsVRK2QD5nsrGVU2Figui42EQxdRMwA9f2xb2wxZAVgCVbsq+zRU3hZOAJLS3zr5I8JjLfEe6oSimBHe+A7+541c4tCdfjumcf0P91+iceSp3aoHhsUaNI6bo6YDabWnuXqkQutt9xmr71OeIcQd0INNCvNQrPNBEfQVEH8g8bCVEglYl2bGqHqASlFxuesp1Z6t0Ifqc6ojADjYhbvy...
CertificateMIIE9DCCAtygAwIBAgIQAJhZIpfMr44eporUJ6HPJzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MDgxNjEyNTgxMFoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyAV7irwQ37G09TurkDh1T5wC4lvY4Gf8qVGe4ioSEihUXwbTupfuDmvdiwkX85EB6ZjJm6Xf...
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: | 0x31e3fe |
| 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
119
Monitored processes
3
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2256 | 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
| |||||||||||||||
| 6472 | "C:\Users\admin\Desktop\SOLARAV3.exe" | C:\Users\admin\Desktop\SOLARAV3.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Exit code: 3 Version: 1.4.1 Modules
| |||||||||||||||
| 6500 | "C:\Users\admin\AppData\Roaming\SubDir\Mailstealer.exe" | C:\Users\admin\AppData\Roaming\SubDir\Mailstealer.exe | SOLARAV3.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Version: 1.4.1 Modules
Quasar(PID) Process(6500) Mailstealer.exe Version1.4.1 C2 (2)Dejvo213455-46018.portmap.host:46018 Sub_DirSubDir Install_NameMailstealer.exe Mutexaac3bb4d-0825-430a-bb2a-fb60e2f5c422 StartupMailstealer TagOffice04 LogDirLogs SignaturekwC/AiV8pbfb0ySC9gSCH7u+12fP5QNz32cbJ9aAbhrB1DSkS2H+TsFPDzMDeHz2JVxVvuH1FMQMDB+bUt0WiiP5DsVRK2QD5nsrGVU2Figui42EQxdRMwA9f2xb2wxZAVgCVbsq+zRU3hZOAJLS3zr5I8JjLfEe6oSimBHe+A7+541c4tCdfjumcf0P91+iceSp3aoHhsUaNI6bo6YDabWnuXqkQutt9xmr71OeIcQd0INNCvNQrPNBEfQVEH8g8bCVEglYl2bGqHqASlFxuesp1Z6t0Ifqc6ojADjYhbvy... CertificateMIIE9DCCAtygAwIBAgIQAJhZIpfMr44eporUJ6HPJzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MDgxNjEyNTgxMFoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyAV7irwQ37G09TurkDh1T5wC4lvY4Gf8qVGe4ioSEihUXwbTupfuDmvdiwkX85EB6ZjJm6Xf... | |||||||||||||||
Total events
7 221
Read events
7 219
Write events
2
Delete events
0
Modification events
| (PID) Process: | (6472) SOLARAV3.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Mailstealer |
Value: "C:\Users\admin\AppData\Roaming\SubDir\Mailstealer.exe" | |||
| (PID) Process: | (6500) Mailstealer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Mailstealer |
Value: "C:\Users\admin\AppData\Roaming\SubDir\Mailstealer.exe" | |||
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6472 | SOLARAV3.exe | C:\Users\admin\AppData\Roaming\SubDir\Mailstealer.exe | executable | |
MD5:E7F36D061CA7ED589B64C53C49AE7652 | SHA256:A85316296BA9C6594BBD38E5DF013B44F455D32473A3898F45E5FB884B2E3DB6 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
19
DNS requests
4
Threats
3
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
1292 | RUXIMICS.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
3888 | svchost.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
— | — | 192.168.100.255:138 | — | — | — | whitelisted |
2120 | MoUsoCoreWorker.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
5056 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
6500 | Mailstealer.exe | 193.161.193.99:46018 | Dejvo213455-46018.portmap.host | OOO Bitree Networks | RU | malicious |
5056 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2120 | MoUsoCoreWorker.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4324 | svchost.exe | 51.104.136.2:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
Dejvo213455-46018.portmap.host |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2256 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a Reverse Proxy Service Observed |
2256 | svchost.exe | Misc activity | ET INFO DNS Query for Port Mapping/Tunneling Service Domain (.portmap .host) |
6500 | Mailstealer.exe | Domain Observed Used for C2 Detected | ET MALWARE Observed Malicious SSL Cert (Quasar CnC) |