| File name: | 7fe80e04473465d9f615ff5b47b0d79e7b1b0f43cee6d249e0ca695073a5f7fa |
| Full analysis: | https://app.any.run/tasks/f43e6d06-3539-4b15-9340-89f5a2be9d68 |
| Verdict: | Malicious activity |
| Threats: | A backdoor is a type of cybersecurity threat that allows attackers to secretly compromise a system and conduct malicious activities, such as stealing data and modifying files. Backdoors can be difficult to detect, as they often use legitimate system applications to evade defense mechanisms. Threat actors often utilize special malware, such as PlugX, to establish backdoors on target devices. |
| Analysis date: | May 16, 2025, 12:38:38 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32+ executable (DLL) (console) x86-64, for MS Windows, 6 sections |
| MD5: | FC057B47B3BEA3B1E5410B326AC55315 |
| SHA1: | EF6AE6A21FC87EA548D2425AD9149AD88EFEBA4C |
| SHA256: | 7FE80E04473465D9F615FF5B47B0D79E7B1B0F43CEE6D249E0CA695073A5F7FA |
| SSDEEP: | 12288:c30EE8jpGp3SHax/jrXq6p0knXeVmpT/Ph5mqaKY7tn+WZ2WXezepk+SIB+R:bEE80pT/pp0XmT/Ph5pYZtzXezepAl |
MALICIOUS
SILVERFOX has been detected (SURICATA)
- explorer.exe (PID: 5492)
Runs injected code in another process
- rundll32.exe (PID: 7352)
Application was injected by another process
- explorer.exe (PID: 5492)
Connects to the CnC server
- explorer.exe (PID: 5492)
SUSPICIOUS
Uses RUNDLL32.EXE to load library
- explorer.exe (PID: 5492)
Connects to unusual port
- explorer.exe (PID: 5492)
Payload loading activity detected
- explorer.exe (PID: 5492)
Searches for installed software
- explorer.exe (PID: 5492)
Contacting a server suspected of hosting an CnC
- explorer.exe (PID: 5492)
INFO
Creates files in the program directory
- explorer.exe (PID: 5492)
Reads the software policy settings
- slui.exe (PID: 7420)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (87.3) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (6.3) |
| .exe | | | DOS Executable Generic (6.3) |
EXIF
EXE
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2025:04:08 01:19:43+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware, DLL |
| PEType: | PE32+ |
| LinkerVersion: | 14.29 |
| CodeSize: | 185856 |
| InitializedDataSize: | 337920 |
| UninitializedDataSize: | - |
| EntryPoint: | 0xc1e0 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows command line |
Total processes
133
Monitored processes
5
Malicious processes
1
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5492 | C:\WINDOWS\Explorer.EXE | C:\Windows\explorer.exe | — | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Explorer Version: 10.0.19041.3758 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7172 | 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 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7352 | "C:\WINDOWS\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\7fe80e04473465d9f615ff5b47b0d79e7b1b0f43cee6d249e0ca695073a5f7fa.dll, #1 | C:\Windows\System32\rundll32.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7388 | C:\WINDOWS\system32\SppExtComObj.exe -Embedding | C:\Windows\System32\SppExtComObj.Exe | — | svchost.exe | |||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: KMS Connection Broker Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7420 | "C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent | C:\Windows\System32\slui.exe | SppExtComObj.Exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Activation Client Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
1 095
Read events
1 087
Write events
2
Delete events
6
Modification events
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers |
| Operation: | delete value | Name: | BackgroundHistoryPath0 |
Value: C:\Windows\web\wallpaper\Windows\img0.jpg | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers |
| Operation: | delete value | Name: | BackgroundHistoryPath1 |
Value: | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers |
| Operation: | delete value | Name: | BackgroundHistoryPath2 |
Value: | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers |
| Operation: | delete value | Name: | BackgroundHistoryPath3 |
Value: | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers |
| Operation: | delete value | Name: | BackgroundHistoryPath4 |
Value: | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers |
| Operation: | write | Name: | BackgroundHistoryPath0 |
Value: C:\Windows\web\wallpaper\Windows\img0.jpg | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\Network |
| Operation: | delete value | Name: | INSTALLTIME |
Value: | |||
| (PID) Process: | (5492) explorer.exe | Key: | HKEY_CURRENT_USER\Network |
| Operation: | write | Name: | INSTALLTIME |
Value: 35002E0031003600 | |||
Executable files
0
Suspicious files
2
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7352 | rundll32.exe | C:\Users\Public\Downloads\bb.jpg | binary | |
MD5:8DD7EC06A0473B75AF7B2BFF8848F39C | SHA256:FB4ACD3185571B379FB7768CE8488DEFC92FBB5861A758C31CED8836A24369F4 | |||
| 5492 | explorer.exe | C:\ProgramData\kernelquick.sys | binary | |
MD5:AE50B29A0B8DCC411F24F1863B0EAFDE | SHA256:6B4BBBCE480FBC50D39A8EC4B72CDB7D781B151921E063DD899FD9B736ADCF68 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
23
DNS requests
17
Threats
18
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 2.16.168.124:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
— | — | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
8012 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
8012 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 2.16.168.124:80 | crl.microsoft.com | Akamai International B.V. | RU | whitelisted |
— | — | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5492 | explorer.exe | 8.210.193.196:7777 | dsh.fvsrchps.cn | Alibaba US Technology Co., Ltd. | HK | malicious |
3216 | svchost.exe | 172.211.123.248:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
6544 | svchost.exe | 20.190.159.128:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 2.23.77.188:80 | ocsp.digicert.com | AKAMAI-AS | DE | whitelisted |
2104 | svchost.exe | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
dsh.fvsrchps.cn |
| unknown |
client.wns.windows.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
5492 | explorer.exe | A Network Trojan was detected | ET MALWARE Win32/ProcessKiller CnC Initialization M2 |
5492 | explorer.exe | Potentially Bad Traffic | PAYLOAD [ANY.RUN] XORed Windows executable has been loaded |
5492 | explorer.exe | Potentially Bad Traffic | PAYLOAD [ANY.RUN] XORed Windows executable has been loaded |
5492 | explorer.exe | Malware Command and Control Activity Detected | ET MALWARE Winos4.0 Framework CnC Login Message |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox TCP Init Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | ET MALWARE Winos4.0 Framework CnC Login Message CnC Server Response |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Encrypted Client Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet |
5492 | explorer.exe | Malware Command and Control Activity Detected | BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet |