File name:

Lynx Ransomware

Full analysis: https://app.any.run/tasks/c0f2aff1-b6f4-4e32-b97e-63d375393593
Verdict: Malicious activity
Threats:

Lynx is a double extortion ransomware: attackers encrypt important and sensitive data and demand a ransom for decryption simultaneously threatening to publish or sell the data. Active since mid-2024. Among techniques are terminating processes and services, privilege escalation, deleting shadow copies. Distribution by phishing, malvertising, exploiting vulnerabilities.

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Analysis date: January 06, 2025, 10:44:11
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
lynx
ransomware
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (console) Intel 80386, for MS Windows, 5 sections
MD5:

D972BBBB3EDB0E5AB5751B911F3DDA17

SHA1:

C632223F5F7A8A469BBF07EB017863BB83564B84

SHA256:

571F5DE9DD0D509ED7E5242B9B7473C2B2CBB36BA64D38B32122A0A337D6CF8B

SSDEEP:

3072:U4BBDFFFb1jQRbLuZJ3hbUXe1FXkutxL4HBc6XwYUbgxFwxtMMeX4/PHhdse:UG1jYePWXAPxL4Hm6XwYUsAnBdse

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

    • LYNX has been detected

      • Lynx Ransomware.exe (PID: 5712)

    • Renames files like ransomware

      • Lynx Ransomware.exe (PID: 5712)

    • Scans artifacts that could help determine the target

      • ONENOTE.EXE (PID: 6244)

  • SUSPICIOUS

    • Reads security settings of Internet Explorer

      • ONENOTE.EXE (PID: 6244)

    • Executes as Windows Service

      • FXSSVC.exe (PID: 6176)

  • INFO

    • Creates files or folders in the user directory

      • ONENOTE.EXE (PID: 6244)

    • Creates files in the program directory

      • Lynx Ransomware.exe (PID: 5712)
      • FXSSVC.exe (PID: 6176)

    • Reads product name

      • ONENOTE.EXE (PID: 6244)

    • Checks supported languages

      • Lynx Ransomware.exe (PID: 5712)
      • ONENOTE.EXE (PID: 6244)

    • Reads Environment values

      • ONENOTE.EXE (PID: 6244)

    • Reads Microsoft Office registry keys

      • ONENOTE.EXE (PID: 6244)

    • Sends debugging messages

      • ONENOTE.EXE (PID: 6244)

    • Reads the computer name

      • ONENOTE.EXE (PID: 6244)

    • Reads the software policy settings

      • ONENOTE.EXE (PID: 6244)

    • Checks proxy server information

      • ONENOTE.EXE (PID: 6244)

    • Reads the machine GUID from the registry

      • Lynx Ransomware.exe (PID: 5712)

    • Process checks computer location settings

      • ONENOTE.EXE (PID: 6244)

    • Reads CPU info

      • ONENOTE.EXE (PID: 6244)
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) (64.6)
.dll | Win32 Dynamic Link Library (generic) (15.4)
.exe | Win32 Executable (generic) (10.5)
.exe | Generic Win/DOS Executable (4.6)
.exe | DOS Executable Generic (4.6)

EXIF

EXE

Subsystem: Windows command line
SubsystemVersion: 6
ImageVersion: -
OSVersion: 6
EntryPoint: 0x9de7
UninitializedDataSize: -
InitializedDataSize: 49664
CodeSize: 119808
LinkerVersion: 14.37
PEType: PE32
ImageFileCharacteristics: Executable, 32-bit
TimeStamp: 2024:08:04 06:49:12+00:00
MachineType: Intel 386 or later, and compatibles
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
136
Monitored processes
5
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #LYNX lynx ransomware.exe no specs conhost.exe no specs printfilterpipelinesvc.exe no specs fxssvc.exe no specs onenote.exe

Process information

PID
CMD
Path
Indicators
Parent process
5712"C:\Users\admin\AppData\Local\Temp\Lynx Ransomware.exe" C:\Users\admin\AppData\Local\Temp\Lynx Ransomware.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\lynx ransomware.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\crypt32.dll
3540\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—Lynx Ransomware.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
9532C:\WINDOWS\system32\printfilterpipelinesvc.exe -EmbeddingC:\Windows\System32\printfilterpipelinesvc.exe—svchost.exe
User:
LOCAL SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Print Filter Pipeline Host
Version:
10.0.19041.3636 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\printfilterpipelinesvc.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
6176C:\WINDOWS\system32\fxssvc.exeC:\Windows\System32\FXSSVC.exe—services.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Fax Service
Version:
10.0.19041.3636 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\fxssvc.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\shlwapi.dll
6244/insertdoc "C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\{E4166D67-A994-4958-8F82-B0076C75DF00}.xps" 133806338755930000C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
printfilterpipelinesvc.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft OneNote
Exit code:
0
Version:
16.0.16026.20146
Modules
Images
c:\program files\microsoft office\root\office16\onenote.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\program files\common files\microsoft shared\clicktorun\appvisvsubsystems64.dll
c:\windows\system32\ole32.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\rpcrt4.dll
Total events
7 760
Read events
7 504
Write events
232
Delete events
24

Modification events

(PID) Process:(5712) Lynx Ransomware.exeKey:HKEY_CURRENT_USER\Control Panel\Desktop
Operation:writeName:Wallpaper
Value:
C:\Users\admin\AppData\Local\Temp\\background-image.jpg
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax
Operation:writeName:RedirectionGuard
Value:
1
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts
Operation:writeName:Password
Value:
00
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts
Operation:delete valueName:Password
Value:
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts
Operation:writeName:Server
Value:
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts
Operation:writeName:From
Value:
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts
Operation:writeName:User
Value:
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Security
Operation:writeName:Descriptor
Value:
010004805C000000680000000000000014000000020048000300000000001800E7020E000102000000000005200000002002000000001400030002000101000000000001000000000000140027020200010100000000000504000000010100000000000514000000010100000000000514000000
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Outbound Routing\Groups\<All devices>
Operation:writeName:Devices
Value:
(PID) Process:(6176) FXSSVC.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Outbound Routing\Rules\0:0
Operation:writeName:CountryCode
Value:
0
Executable files
0
Suspicious files
195
Text files
120
Unknown types
0

Dropped files

PID
Process
Filename
Type
5712Lynx Ransomware.exeC:\ProgramData\Adobe\ARM\Acrobat_23.001.20093\AcroRdrDCx64Upd2300820470_MUI.msp —
MD5:—
SHA256:—
5712Lynx Ransomware.exeC:\ProgramData\Adobe\ARM\Acrobat_23.001.20093\AcroRdrDCx64Upd2300820470_MUI.msp.LYNX —
MD5:—
SHA256:—
5712Lynx Ransomware.exeC:\ProgramData\Microsoft\User Account Pictures\admin.dat —
MD5:—
SHA256:—
5712Lynx Ransomware.exeC:\ProgramData\Microsoft OneDrive\setup\refcount.ini —
MD5:—
SHA256:—
5712Lynx Ransomware.exeC:\ProgramData\Microsoft\DataMart\PaidWiFi\README.txttext
MD5:4B051374CF41085B6A50968EB0C37423
SHA256:9BF2BA205A39030FB75C270FF117B3A2496CB40CBFEC44C2906D86B6E668E31B
5712Lynx Ransomware.exeC:\ProgramData\Comms\README.txttext
MD5:4B051374CF41085B6A50968EB0C37423
SHA256:9BF2BA205A39030FB75C270FF117B3A2496CB40CBFEC44C2906D86B6E668E31B
5712Lynx Ransomware.exeC:\ProgramData\Microsoft OneDrive\README.txttext
MD5:4B051374CF41085B6A50968EB0C37423
SHA256:9BF2BA205A39030FB75C270FF117B3A2496CB40CBFEC44C2906D86B6E668E31B
5712Lynx Ransomware.exeC:\ProgramData\Microsoft\DeviceSync\README.txttext
MD5:4B051374CF41085B6A50968EB0C37423
SHA256:9BF2BA205A39030FB75C270FF117B3A2496CB40CBFEC44C2906D86B6E668E31B
5712Lynx Ransomware.exeC:\ProgramData\Adobe\Temp\README.txttext
MD5:4B051374CF41085B6A50968EB0C37423
SHA256:9BF2BA205A39030FB75C270FF117B3A2496CB40CBFEC44C2906D86B6E668E31B
5712Lynx Ransomware.exeC:\ProgramData\README.txttext
MD5:4B051374CF41085B6A50968EB0C37423
SHA256:9BF2BA205A39030FB75C270FF117B3A2496CB40CBFEC44C2906D86B6E668E31B
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
12
TCP/UDP connections
40
DNS requests
20
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
6344
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D
unknown
—
—
whitelisted
—
—
GET
200
23.48.23.156:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
—
—
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
6848
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
—
—
GET
200
23.48.23.156:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
1176
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
4712
MoUsoCoreWorker.exe
GET
200
23.48.23.156:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
4712
MoUsoCoreWorker.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
6848
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
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
—
—
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
4712
MoUsoCoreWorker.exe
23.48.23.156:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
—
—
23.48.23.156:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
4712
MoUsoCoreWorker.exe
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
—
—
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
5064
SearchApp.exe
104.126.37.154:443
www.bing.com
Akamai International B.V.
DE
whitelisted
5064
SearchApp.exe
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
1076
svchost.exe
23.35.238.131:443
go.microsoft.com
AKAMAI-AS
DE
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.104.136.2
  • 51.124.78.146
whitelisted
crl.microsoft.com
  • 23.48.23.156
  • 23.48.23.143
whitelisted
www.microsoft.com
  • 184.30.21.171
whitelisted
google.com
  • 216.58.212.174
whitelisted
www.bing.com
  • 104.126.37.154
  • 104.126.37.153
  • 104.126.37.146
  • 104.126.37.144
  • 104.126.37.139
  • 104.126.37.160
  • 104.126.37.161
  • 104.126.37.145
  • 104.126.37.155
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
go.microsoft.com
  • 23.35.238.131
whitelisted
login.live.com
  • 40.126.31.73
  • 20.190.159.0
  • 20.190.159.4
  • 20.190.159.68
  • 20.190.159.2
  • 40.126.31.69
  • 40.126.31.67
  • 20.190.159.71
whitelisted
officeclient.microsoft.com
  • 52.109.32.97
whitelisted
ecs.office.com
  • 52.113.194.132
whitelisted

Threats

No threats detected
Process
Message
ONENOTE.EXE
WebView2: Failed to find an installed WebView2 runtime or non-stable Microsoft Edge installation.
ONENOTE.EXE
WebView2: Failed to find an installed WebView2 runtime or non-stable Microsoft Edge installation.
ONENOTE.EXE
WebView2: Failed to find an installed WebView2 runtime or non-stable Microsoft Edge installation.
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Reports
Lynx Ransomware