| File name: | winsub.exe |
| Full analysis: | https://app.any.run/tasks/55fef245-21eb-463c-8165-63007a1edee2 |
| 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 24, 2024, 17:53:52 |
| 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: | 228C54CCA938C28F4C6EE3B3DC11BC9A |
| SHA1: | A6BFA3EC3EA9A74602174ABBE1D44962DCBA7E7B |
| SHA256: | 5D52A49FB099109E20C5DEA2BBD103AD4B14BB395380DCE636251D54AA4EEDAF |
| SSDEEP: | 49152:CYEcsT90z2NkvSCmRf7uY1+DVlYZ+hHjGmt/3DgfgIzvrjLJ7SX48VtO9+zvLRoU:j2NkKCmRf7uY1+DVlYZ+hHaIDgP9uh |
MALICIOUS
QUASAR has been detected (YARA)
- winsub.exe (PID: 6688)
SUSPICIOUS
Drops the executable file immediately after the start
- winsub.exe (PID: 6688)
INFO
Reads the computer name
- winsub.exe (PID: 6688)
Checks supported languages
- winsub.exe (PID: 6688)
Reads the machine GUID from the registry
- winsub.exe (PID: 6688)
Reads Environment values
- winsub.exe (PID: 6688)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(6688) winsub.exe
Version1.4.1
C2 (2)tech11.ddns.net:4782
Sub_DirSubSystem
Install_NameSysUp.exe
Mutex81587dfc-35c6-4916-b3d6-30fe9b25d8bb
StartupWindows Subsystem
TagOffice04
LogDirLogs
SignatureObjdJZ3cQFTZMcBOBa8DkG9YaLuHVDYyo9+cTyJQ0H1B+4VHy3CRLOnJ2sjNLuynrusRHIo+h1nPGiu8t0wnn00kkAtrk3Za7A1OsfYcao7aIYNfsw5+puPJuEtkn+IGRCvU2ZF08vX4Qwdd8R5iHRBvgujdQqTESkdkqlyye+M1J3uUTdgFbGl3/dK1RvCkHA2WeXXZ8rjtCtM2ShptMQWBqhpJZbUYwKrn2OnYmSWHAuywnUph/j2ggVczrwnPX9PzqVwS5vQ/hwAN4JoONxdLUoKjXQT0ppO8GVOckp2v...
CertificateMIIE9DCCAtygAwIBAgIQAN9o7PcA2GY7fF2crVxM1zANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MDQxNTIxMDQxMVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAjFmR//aHm7pISUOpKsBUKxh6V+P0kXo6DD9xbyL6FzPuSsdws76qS/UwDReD7ZnWSQC1M+Rn...
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
1
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6688 | "C:\Users\admin\Desktop\winsub.exe" | C:\Users\admin\Desktop\winsub.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Quasar Client Version: 1.4.1 Modules
Quasar(PID) Process(6688) winsub.exe Version1.4.1 C2 (2)tech11.ddns.net:4782 Sub_DirSubSystem Install_NameSysUp.exe Mutex81587dfc-35c6-4916-b3d6-30fe9b25d8bb StartupWindows Subsystem TagOffice04 LogDirLogs SignatureObjdJZ3cQFTZMcBOBa8DkG9YaLuHVDYyo9+cTyJQ0H1B+4VHy3CRLOnJ2sjNLuynrusRHIo+h1nPGiu8t0wnn00kkAtrk3Za7A1OsfYcao7aIYNfsw5+puPJuEtkn+IGRCvU2ZF08vX4Qwdd8R5iHRBvgujdQqTESkdkqlyye+M1J3uUTdgFbGl3/dK1RvCkHA2WeXXZ8rjtCtM2ShptMQWBqhpJZbUYwKrn2OnYmSWHAuywnUph/j2ggVczrwnPX9PzqVwS5vQ/hwAN4JoONxdLUoKjXQT0ppO8GVOckp2v... CertificateMIIE9DCCAtygAwIBAgIQAN9o7PcA2GY7fF2crVxM1zANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI0MDQxNTIxMDQxMVoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAjFmR//aHm7pISUOpKsBUKxh6V+P0kXo6DD9xbyL6FzPuSsdws76qS/UwDReD7ZnWSQC1M+Rn... | |||||||||||||||
Total events
347
Read events
347
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
0
TCP/UDP connections
14
DNS requests
3
Threats
0
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 |
|---|---|---|---|---|---|---|
— | — | 192.168.100.255:138 | — | — | — | whitelisted |
4876 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
6000 | RUXIMICS.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
2120 | MoUsoCoreWorker.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 |
4324 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |