File name:

139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe

Full analysis: https://app.any.run/tasks/893ab13a-bf13-4a35-a2e3-3c3eab7ebb87
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.

Malware Trends Tracker     >>>
Analysis date: May 16, 2025, 09:12:48
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
payload
silverfox
backdoor
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32+ executable (GUI) x86-64, for MS Windows, 8 sections
MD5:

8030E60EBED7DF5D76E3CFD3223435C6

SHA1:

0920B2A959387B700D0DD2878BBFB80D84E3CC74

SHA256:

139466A8596FE3E2F172B28E5A7437A400FBA6C5B6D85D83359101ED68E95A5F

SSDEEP:

98304:AQ0+EWJ0N/43EhW82Wd68czAzER2SLgx4RybqZpNCzOPTgLPXgfLqxt+ZwkKkWQB:T0GKI

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Executing a file with an untrusted certificate

      • 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 7348)

    • Runs injected code in another process

      • 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 7348)

    • Application was injected by another process

      • explorer.exe (PID: 5492)

    • Connects to the CnC server

      • explorer.exe (PID: 5492)

    • SILVERFOX has been detected (SURICATA)

      • explorer.exe (PID: 5492)

  • SUSPICIOUS

    • Payload loading activity detected

      • explorer.exe (PID: 5492)

    • Connects to unusual port

      • 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

    • The sample compiled with english language support

      • 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 7348)

    • Checks supported languages

      • 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe (PID: 7348)

    • Creates files in the program directory

      • explorer.exe (PID: 5492)

    • Checks proxy server information

      • slui.exe (PID: 7916)

    • Reads the software policy settings

      • slui.exe (PID: 7916)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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: 2025:05:16 00:37:54+00:00
ImageFileCharacteristics: Executable, Large address aware
PEType: PE32+
LinkerVersion: 10
CodeSize: 1494016
InitializedDataSize: 1121280
UninitializedDataSize: -
EntryPoint: 0x147014
OSVersion: 5.2
ImageVersion: -
SubsystemVersion: 5.2
Subsystem: Windows GUI
FileVersionNumber: 2.2.3.8
ProductVersionNumber: 5.9.3.3
FileFlagsMask: 0x0000
FileFlags: (none)
FileOS: Unknown (0)
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: English (U.S.)
CharacterSet: Unicode
FileVersion: 2.2.3.8
ProductVersion: 5.9.3.3
FileDescription: PowerPoint Viewer, Inc.
ProductName: PowerPoint Viewer
LegalCopyright: Copyright (c) 2024
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
126
Monitored processes
3
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start 139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe no specs #SILVERFOX explorer.exe slui.exe

Process information

PID
CMD
Path
Indicators
Parent process
5492C:\WINDOWS\Explorer.EXEC:\Windows\explorer.exe
—
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Explorer
Version:
10.0.19041.3758 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\iconcodecservice.dll
c:\windows\system32\mswsock.dll
c:\windows\system32\dnsapi.dll
c:\windows\system32\rasadhlp.dll
c:\windows\system32\fwpuclnt.dll
c:\windows\explorer.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
7348"C:\Users\admin\Desktop\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe" C:\Users\admin\Desktop\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
PowerPoint Viewer, Inc.
Version:
2.2.3.8
Modules
Images
c:\users\admin\desktop\139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\msimg32.dll
c:\windows\system32\imm32.dll
c:\windows\system32\gdi32.dll
7916C:\WINDOWS\System32\slui.exe -EmbeddingC:\Windows\System32\slui.exe
svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Activation Client
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
Total events
3 953
Read events
3 940
Write events
7
Delete events
6

Modification events

(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\Shell\Bags\1\Desktop
Operation:writeName:IconLayouts
Value:
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
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\Shell\Bags\1\Desktop
Operation:writeName:IconNameVersion
Value:
1
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\OneDrive\Accounts
Operation:writeName:LastUpdate
Value:
9901276800000000
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
Operation:delete valueName:BackgroundHistoryPath0
Value:
C:\Windows\web\wallpaper\Windows\img0.jpg
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
Operation:delete valueName:BackgroundHistoryPath1
Value:
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
Operation:delete valueName:BackgroundHistoryPath2
Value:
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
Operation:delete valueName:BackgroundHistoryPath3
Value:
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
Operation:delete valueName:BackgroundHistoryPath4
Value:
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
Operation:writeName:BackgroundHistoryPath0
Value:
C:\Windows\web\wallpaper\Windows\img0.jpg
(PID) Process:(5492) explorer.exeKey:HKEY_CURRENT_USER\Network
Operation:writeName:INSTALLTIME
Value:
35002E0031003600
Executable files
0
Suspicious files
2
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
7348139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exeC:\Users\Public\Downloads\bb.jpgbinary
MD5:8DD7EC06A0473B75AF7B2BFF8848F39C
SHA256:FB4ACD3185571B379FB7768CE8488DEFC92FBB5861A758C31CED8836A24369F4
5492explorer.exeC:\ProgramData\kernelquick.sysbinary
MD5:AE50B29A0B8DCC411F24F1863B0EAFDE
SHA256:6B4BBBCE480FBC50D39A8EC4B72CDB7D781B151921E063DD899FD9B736ADCF68
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
53
DNS requests
20
Threats
22

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2104
svchost.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
2104
svchost.exe
GET
200
2.19.11.120:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.1.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
2.16.168.124:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut_2010-06-23.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
2.16.168.124:80
http://crl.microsoft.com/pki/crl/products/MicTimStaPCA_2010-07-01.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Signing%20CA%202.1.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Signing%20CA%202.2.crl
unknown
—
—
whitelisted
7716
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.2.crl
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
4
System
192.168.100.255:137
—
—
—
whitelisted
2104
svchost.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
—
—
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
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
2104
svchost.exe
2.19.11.120:80
crl.microsoft.com
Elisa Oyj
NL
whitelisted
2104
svchost.exe
95.101.149.131:80
www.microsoft.com
Akamai International B.V.
NL
whitelisted
3216
svchost.exe
172.211.123.248:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
FR
whitelisted
6544
svchost.exe
40.126.53.6:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
SE
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
  • 20.73.194.208
  • 40.127.240.158
whitelisted
google.com
  • 142.250.185.142
whitelisted
dsh.fvsrchps.cn
  • 8.210.193.196
unknown
crl.microsoft.com
  • 2.19.11.120
  • 2.19.11.105
  • 2.16.168.124
  • 2.16.168.114
whitelisted
www.microsoft.com
  • 95.101.149.131
whitelisted
client.wns.windows.com
  • 172.211.123.248
whitelisted
login.live.com
  • 40.126.53.6
  • 20.190.181.5
  • 40.126.53.11
  • 40.126.53.8
  • 40.126.53.13
  • 20.190.181.3
  • 40.126.53.9
  • 40.126.53.16
whitelisted
slscr.update.microsoft.com
  • 52.149.20.212
whitelisted
fe3cr.delivery.mp.microsoft.com
  • 13.95.31.18
whitelisted
activation-v2.sls.microsoft.com
  • 40.91.76.224
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
No debug info
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Reports
139466a8596fe3e2f172b28e5a7437a400fba6c5b6d85d83359101ed68e95a5f.exe