| File name: | Java Update Scheduler.exe |
| Full analysis: | https://app.any.run/tasks/239af410-9257-4e40-b3a5-0b91624570a0 |
| 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: | October 21, 2020, 16:30:04 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | FCB85FE998128CF3036A2474B64D7F94 |
| SHA1: | 67FA9B047D03A8DA80C7A5B1DA4C63C74B588230 |
| SHA256: | F81AD886CA42072BA1017FE74E49FD8F5920FED81F34E2CB9FF6B4F71B39BF3D |
| SSDEEP: | 49152:0DW5rsFM1kNNnAQ7rQeWU8chYI1yEoUfFza32ehyfTtBDm:0D8sFM1kNNA6ke/8chx1yiBa |
MALICIOUS
Changes the autorun value in the registry
- Java Update Scheduler.exe (PID: 956)
- WinUpdate.exe (PID: 1508)
QUASAR was detected
- WinUpdate.exe (PID: 1508)
Connects to CnC server
- WinUpdate.exe (PID: 1508)
SUSPICIOUS
Creates files in the user directory
- Java Update Scheduler.exe (PID: 956)
Starts itself from another location
- Java Update Scheduler.exe (PID: 956)
Executable content was dropped or overwritten
- Java Update Scheduler.exe (PID: 956)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
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: | 2020:10:21 18:04:56+02:00 |
| PEType: | PE32 |
| LinkerVersion: | 8 |
| CodeSize: | 2894848 |
| InitializedDataSize: | 60928 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x2c4b2e |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 2.8.261.12 |
| ProductVersionNumber: | 2.8.261.12 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| Comments: | - |
| CompanyName: | Java |
| FileDescription: | Java Update Scheduler |
| FileVersion: | 2.8.261.12 |
| InternalName: | jusched |
| LegalCopyright: | Copyright 2020 |
| LegalTrademarks: | Java |
| OriginalFileName: | jusched |
| ProductName: | Java Update Scheduler |
| ProductVersion: | 2.8.261.12 |
| AssemblyVersion: | 2.8.261.12 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 21-Oct-2020 16:04:56 |
| Comments: | - |
| CompanyName: | Java |
| FileDescription: | Java Update Scheduler |
| FileVersion: | 2.8.261.12 |
| InternalName: | jusched |
| LegalCopyright: | Copyright 2020 |
| LegalTrademarks: | Java |
| OriginalFilename: | jusched |
| ProductName: | Java Update Scheduler |
| ProductVersion: | 2.8.261.12 |
| Assembly Version: | 2.8.261.12 |
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: | 21-Oct-2020 16:04:56 |
| 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 | 0x002C2B34 | 0x002C2C00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.09078 |
.rsrc | 0x002C6000 | 0x0000EBD0 | 0x0000EC00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.44815 |
.reloc | 0x002D6000 | 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 | 5.18029 | 1751 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
2 | 5.39659 | 2440 | Latin 1 / Western European | UNKNOWN | RT_ICON |
3 | 5.46566 | 4264 | Latin 1 / Western European | UNKNOWN | RT_ICON |
4 | 5.0284 | 9640 | Latin 1 / Western European | UNKNOWN | RT_ICON |
5 | 7.98676 | 39713 | Latin 1 / Western European | UNKNOWN | RT_ICON |
Imports
mscoree.dll |
Total processes
37
Monitored processes
2
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 956 | "C:\Users\admin\AppData\Local\Temp\Java Update Scheduler.exe" | C:\Users\admin\AppData\Local\Temp\Java Update Scheduler.exe | explorer.exe | ||||||||||||
User: admin Company: Java Integrity Level: MEDIUM Description: Java Update Scheduler Exit code: 0 Version: 2.8.261.12 Modules
| |||||||||||||||
| 1508 | "C:\Users\admin\AppData\Roaming\SubDir\WinUpdate.exe" | C:\Users\admin\AppData\Roaming\SubDir\WinUpdate.exe | Java Update Scheduler.exe | ||||||||||||
User: admin Company: Java Integrity Level: MEDIUM Description: Java Update Scheduler Exit code: 0 Version: 2.8.261.12 Modules
| |||||||||||||||
Total events
50
Read events
28
Write events
22
Delete events
0
Modification events
| (PID) Process: | (956) Java Update Scheduler.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13B\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (956) Java Update Scheduler.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Java Update Scheduler |
Value: "C:\Users\admin\AppData\Local\Temp\Java Update Scheduler.exe" | |||
| (PID) Process: | (1508) WinUpdate.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\13B\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
| (PID) Process: | (1508) WinUpdate.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Java Update Scheduler |
Value: "C:\Users\admin\AppData\Roaming\SubDir\WinUpdate.exe" | |||
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 956 | Java Update Scheduler.exe | C:\Users\admin\AppData\Roaming\SubDir\WinUpdate.exe | executable | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
36
DNS requests
9
Threats
11
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 |
|---|---|---|---|---|---|---|
1508 | WinUpdate.exe | 3.13.191.225:10858 | 0.tcp.ngrok.io | — | US | malicious |
1508 | WinUpdate.exe | 3.134.39.220:10858 | 0.tcp.ngrok.io | — | US | shared |
1508 | WinUpdate.exe | 3.22.30.40:10858 | 0.tcp.ngrok.io | — | US | malicious |
1508 | WinUpdate.exe | 3.17.7.232:10858 | 0.tcp.ngrok.io | — | US | malicious |
1508 | WinUpdate.exe | 3.14.182.203:10858 | 0.tcp.ngrok.io | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
0.tcp.ngrok.io |
| malicious |
dns.msftncsi.com |
| shared |
Threats
PID | Process | Class | Message |
|---|---|---|---|
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
1508 | WinUpdate.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (Quasar CnC) |
1508 | WinUpdate.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (Quasar CnC) |
1508 | WinUpdate.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (Quasar CnC) |
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
1508 | WinUpdate.exe | A Network Trojan was detected | ET TROJAN Observed Malicious SSL Cert (Quasar CnC) |
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
1052 | svchost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |