File name:

bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe

Full analysis: https://app.any.run/tasks/0c946f86-9822-40a9-b711-29ac44146052
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: March 24, 2025, 14:01:34
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
silverfox
backdoor
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386, for MS Windows, 4 sections
MD5:

43FDA3A79887E52697D9914CF6AC8AB9

SHA1:

D2E13553801C1664845F02C87354F766AAE44BCC

SHA256:

BB0F1273A50808010F91C433982FB30D45F1F2A0297479168E166AAD17887848

SSDEEP:

49152:hNT2TO5k5U5TIbUMyzb5mf5Cm5W5OkAMeAdUh57X4FTPj6bf3gtNLbDvIMS/ONG:hNT2TOXIbUMGu5vkeA857XijebgtN3xu

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

      • bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe (PID: 7804)
  • SUSPICIOUS

    • Connects to unusual port

      • bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe (PID: 7804)
  • INFO

    • The sample compiled with chinese language support

      • bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe (PID: 7804)
    • Reads the computer name

      • bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe (PID: 7804)
    • Checks supported languages

      • bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe (PID: 7804)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable MS Visual C++ (generic) (46.3)
.exe | Win64 Executable (generic) (41)
.exe | Win32 Executable (generic) (6.6)
.exe | Generic Win/DOS Executable (2.9)
.exe | DOS Executable Generic (2.9)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2011:09:15 07:31:32+00:00
ImageFileCharacteristics: No relocs, Executable, 32-bit
PEType: PE32
LinkerVersion: 8
CodeSize: 856064
InitializedDataSize: 315392
UninitializedDataSize: -
EntryPoint: 0xab688
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 4.3.1091.400
ProductVersionNumber: 4.3.1091.400
FileFlagsMask: 0x0017
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Chinese (Simplified)
CharacterSet: Unicode
Comments: 2011-9-13 3:05:58
CompanyName: Tencent
FileDescription: QQ拼音手写输入工具
FileVersion: 4.3.1091.400
InternalName: QQPYHandInput
LegalCopyright: Copyright © 2007-2010 Tencent. All Rights Reserved.
OriginalFileName: QQPYHandInput.exe
ProductName: QQ拼音手写输入工具
ProductVersion: 4.3.1091.400
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
120
Monitored processes
2
Malicious processes
0
Suspicious processes
1

Behavior graph

Click at the process to see the details
start bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
7716"C:\Users\admin\Desktop\bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe" C:\Users\admin\Desktop\bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exeexplorer.exe
User:
admin
Company:
Tencent
Integrity Level:
MEDIUM
Description:
QQ拼音手写输入工具
Exit code:
3221226540
Version:
4.3.1091.400
Modules
Images
c:\users\admin\desktop\bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
7804"C:\Users\admin\Desktop\bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe" C:\Users\admin\Desktop\bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe
explorer.exe
User:
admin
Company:
Tencent
Integrity Level:
HIGH
Description:
QQ拼音手写输入工具
Version:
4.3.1091.400
Modules
Images
c:\users\admin\desktop\bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\user32.dll
Total events
305
Read events
304
Write events
1
Delete events
0

Modification events

(PID) Process:(7804) bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exeKey:HKEY_CURRENT_USER\SOFTWARE\Tencent\QQPinyin
Operation:writeName:SwithUserStyle
Value:
1
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

No data
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
3
TCP/UDP connections
25
DNS requests
4
Threats
17

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2104
svchost.exe
GET
200
23.48.23.156:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
unknown
POST
500
40.91.76.224:443
https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail
unknown
xml
512 b
whitelisted
POST
500
40.91.76.224:443
https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail
unknown
xml
512 b
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
20.73.194.208:443
MICROSOFT-CORP-MSN-AS-BLOCK
NL
unknown
192.168.100.255:137
unknown
2104
svchost.exe
20.73.194.208:443
MICROSOFT-CORP-MSN-AS-BLOCK
NL
unknown
4
System
192.168.100.255:138
unknown
7804
bb0f1273a50808010f91c433982fb30d45f1f2a0297479168e166aad17887848.exe
47.86.28.28:8852
US
unknown
2104
svchost.exe
23.48.23.156:80
crl.microsoft.com
Akamai International B.V.
DE
unknown
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
unknown
47.86.28.28:18853
US
unknown
47.86.28.28:18852
US
unknown
47.86.28.28:10861
US
unknown

DNS requests

Domain
IP
Reputation
google.com
  • 142.250.185.142
unknown
crl.microsoft.com
  • 23.48.23.156
  • 23.48.23.173
  • 23.48.23.169
  • 23.48.23.143
  • 23.48.23.141
  • 23.48.23.180
  • 23.48.23.176
  • 23.48.23.147
  • 23.48.23.164
unknown
settings-win.data.microsoft.com
  • 4.231.128.59
unknown
activation-v2.sls.microsoft.com
  • 40.91.76.224
unknown

Threats

PID
Process
Class
Message
Misc activity
ET HUNTING ZIP file download over raw TCP
Malware Command and Control Activity Detected
ET MALWARE Winos4.0 Framework CnC Login Message
Malware Command and Control Activity Detected
BACKDOOR [ANY.RUN] SilverFox TCP Init Packet
Malware Command and Control Activity Detected
ET MALWARE Winos4.0 Framework CnC Login Message CnC Server Response
Malware Command and Control Activity Detected
BACKDOOR [ANY.RUN] SilverFox Encrypted Client Packet
Malware Command and Control Activity Detected
BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet
Malware Command and Control Activity Detected
BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet
Malware Command and Control Activity Detected
BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet
Malware Command and Control Activity Detected
BACKDOOR [ANY.RUN] SilverFox Keep-Alive Client Packet
Malware Command and Control Activity Detected
ET MALWARE Winos4.0 Framework CnC Login Message
No debug info