| File name: | stub.exe |
| Full analysis: | https://app.any.run/tasks/37ee79bf-b2c2-4b0d-834f-9fcc8a9ab81a |
| 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: | May 14, 2023, 19:25:23 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 46B23E41AEBA2BB731B8AE3E22A7E5DC |
| SHA1: | A180B34C6F9CC519D1D3773904C56C3D952CA423 |
| SHA256: | C8277E88B37878917B46D509324A57846D58E285C3E06720A282E7BB34FD9BC0 |
| SSDEEP: | 6144:+2NHXf500MGQqCgPsccwxdbNNepgFVswka:1d50yzVteGjswka |
MALICIOUS
QUASAR detected by memory dumps
- stub.exe (PID: 2564)
SUSPICIOUS
Reads the Internet Settings
- stub.exe (PID: 2564)
Checks for external IP
- stub.exe (PID: 2564)
Connects to unusual port
- stub.exe (PID: 2564)
INFO
Reads Environment values
- stub.exe (PID: 2564)
Reads the computer name
- stub.exe (PID: 2564)
The process checks LSA protection
- stub.exe (PID: 2564)
Reads the machine GUID from the registry
- stub.exe (PID: 2564)
Checks supported languages
- stub.exe (PID: 2564)
Creates files or folders in the user directory
- stub.exe (PID: 2564)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(2564) stub.exe
Version1.3.0.0
C2 (2)asyfguas.con-ip.com:555
Sub_DirSubDir
Install_NameClient.exe
MutexQSR_MUTEX_ehHHLz4QY25Plj0Xry
StartupQuasar Client Startup
Tagnew2
LogDirLogs
Signature
Certificate
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
| AssemblyVersion: | 1.3.0.0 |
|---|---|
| ProductVersion: | 1.3.0.0 |
| ProductName: | - |
| OriginalFileName: | Client.exe |
| LegalTrademarks: | - |
| LegalCopyright: | - |
| InternalName: | Client.exe |
| FileVersion: | 1.3.0.0 |
| FileDescription: | - |
| CompanyName: | - |
| Comments: | - |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.3.0.0 |
| FileVersionNumber: | 1.3.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x581ae |
| UninitializedDataSize: | - |
| InitializedDataSize: | 3072 |
| CodeSize: | 352768 |
| LinkerVersion: | 8 |
| PEType: | PE32 |
| ImageFileCharacteristics: | Executable, 32-bit |
| TimeStamp: | 2023:05:08 21:49:04+00:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 08-May-2023 21:49:04 |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | - |
| FileVersion: | 1.3.0.0 |
| InternalName: | Client.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFilename: | Client.exe |
| ProductName: | - |
| ProductVersion: | 1.3.0.0 |
| Assembly Version: | 1.3.0.0 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 08-May-2023 21:49:04 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x000561B4 | 0x00056200 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.44653 |
.rsrc | 0x0005A000 | 0x00000A00 | 0x00000A00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.23597 |
.reloc | 0x0005C000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.22615 | 1171 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
33
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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2564 | "C:\Users\admin\AppData\Local\Temp\stub.exe" | C:\Users\admin\AppData\Local\Temp\stub.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.3.0.0 Modules
Quasar(PID) Process(2564) stub.exe Version1.3.0.0 C2 (2)asyfguas.con-ip.com:555 Sub_DirSubDir Install_NameClient.exe MutexQSR_MUTEX_ehHHLz4QY25Plj0Xry StartupQuasar Client Startup Tagnew2 LogDirLogs Signature Certificate | |||||||||||||||
Total events
1 460
Read events
1 460
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
2
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2564 | stub.exe | C:\Users\admin\AppData\Roaming\Logs\05-14-2023 | binary | |
MD5:E61A510F69B23A8C8C8BC7C3D84AB8F3 | SHA256:44E16D05725FA3F9BB6B28E0ACE25DEFF651A14BBF6054700EDC0731C95B54A7 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
2
DNS requests
2
Threats
4
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2564 | stub.exe | GET | 200 | 208.95.112.1:80 | http://ip-api.com/json/ | unknown | binary | 285 b | malicious |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2564 | stub.exe | 208.95.112.1:80 | ip-api.com | TUT-AS | US | malicious |
2564 | stub.exe | 5.161.113.202:555 | asyfguas.con-ip.com | Hetzner Online GmbH | US | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
ip-api.com |
| malicious |
asyfguas.con-ip.com |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2564 | stub.exe | A Network Trojan was detected | ET MALWARE Common RAT Connectivity Check Observed |
2564 | stub.exe | Potential Corporate Privacy Violation | AV POLICY Internal Host Retrieving External IP Address (ip-api. com) |
2564 | stub.exe | Device Retrieving External IP Address Detected | ET POLICY External IP Lookup ip-api.com |
— | — | Potentially Bad Traffic | ET INFO DNS Redirection Service Domain in DNS Lookup (con-ip .com) |