File name:

ThunderKitty-Built.exe

Full analysis: https://app.any.run/tasks/062de3a9-2212-434f-8030-05802937f5f2
Verdict: Malicious activity
Threats:

Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns.

Malware Trends Tracker     >>>
Analysis date: May 16, 2025, 17:36:16
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
skuld
stealer
antivm
golang
telegram
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32+ executable (GUI) x86-64, for MS Windows, 8 sections
MD5:

DDB717EACDFDC3C24EB2DF2724677398

SHA1:

2D558DB86BBD81B457AE783926C73C0DF0C0E4F3

SHA256:

E1EAEA80FC723C6AE674CB446CDD9B2BFD9E4093102E444EB86F0B1A4C5BDC75

SSDEEP:

98304:l8FAQwF2nQybVyMba149yEwl4ZI1yzB+358iCW6yaQyIgCbEgM3uOyPH5EtfaOhm:

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

    • SKULD has been detected

      • ThunderKitty-Built.exe (PID: 7460)

    • Steals credentials from Web Browsers

      • ThunderKitty-Built.exe (PID: 7460)

    • Starts REAGENTC.EXE to disable the Windows Recovery Environment

      • ReAgentc.exe (PID: 7896)

    • Changes the autorun value in the registry

      • ThunderKitty-Built.exe (PID: 7460)

    • Actions looks like stealing of personal data

      • ThunderKitty-Built.exe (PID: 7460)

  • SUSPICIOUS

    • Get information on the list of running processes

      • ThunderKitty-Built.exe (PID: 7460)

    • Uses TASKKILL.EXE to kill process

      • ThunderKitty-Built.exe (PID: 7460)

    • Executable content was dropped or overwritten

      • ThunderKitty-Built.exe (PID: 7460)

    • Uses TASKKILL.EXE to kill Browsers

      • ThunderKitty-Built.exe (PID: 7460)

    • The process checks if it is being run in the virtual environment

      • ThunderKitty-Built.exe (PID: 7460)

    • Multiple wallet extension IDs have been found

      • ThunderKitty-Built.exe (PID: 7460)

    • There is functionality for taking screenshot (YARA)

      • ThunderKitty-Built.exe (PID: 7460)

    • There is functionality for VM detection VirtualBox (YARA)

      • ThunderKitty-Built.exe (PID: 7460)

    • Process communicates with Telegram (possibly using it as an attacker's C2 server)

      • ThunderKitty-Built.exe (PID: 7460)

    • There is functionality for VM detection VMWare (YARA)

      • ThunderKitty-Built.exe (PID: 7460)

  • INFO

    • Checks supported languages

      • ThunderKitty-Built.exe (PID: 7460)

    • Drops encrypted JS script (Microsoft Script Encoder)

      • ThunderKitty-Built.exe (PID: 7460)

    • Creates files or folders in the user directory

      • ThunderKitty-Built.exe (PID: 7460)

    • Reads the computer name

      • ThunderKitty-Built.exe (PID: 7460)

    • Application based on Golang

      • ThunderKitty-Built.exe (PID: 7460)

    • Detects GO elliptic curve encryption (YARA)

      • ThunderKitty-Built.exe (PID: 7460)

    • Create files in a temporary directory

      • ThunderKitty-Built.exe (PID: 7460)

    • Reads the software policy settings

      • ThunderKitty-Built.exe (PID: 7460)

    • Reads the machine GUID from the registry

      • ThunderKitty-Built.exe (PID: 7460)
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: 0000:00:00 00:00:00
ImageFileCharacteristics: Executable, Large address aware
PEType: PE32+
LinkerVersion: 3
CodeSize: 5171200
InitializedDataSize: 484352
UninitializedDataSize: -
EntryPoint: 0x77ec0
OSVersion: 6.1
ImageVersion: 1
SubsystemVersion: 6.1
Subsystem: Windows GUI
No data.
screenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
166
Monitored processes
39
Malicious processes
1
Suspicious processes
1

Behavior graph

Click at the process to see the details
start #SKULD thunderkitty-built.exe tasklist.exe no specs conhost.exe no specs tasklist.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs sppextcomobj.exe no specs slui.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs taskkill.exe no specs conhost.exe no specs reagentc.exe no specs conhost.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
960\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—taskkill.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
976\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—taskkill.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
1056taskkill /F /IM vivaldi.exeC:\Windows\System32\taskkill.exe—ThunderKitty-Built.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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
1348\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—taskkill.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
1628taskkill /F /IM msedge.exeC:\Windows\System32\taskkill.exe—ThunderKitty-Built.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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
3100taskkill /F /IM epicprivacybrowser.exeC:\Windows\System32\taskkill.exe—ThunderKitty-Built.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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
4400\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—taskkill.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
4428\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—taskkill.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
5376\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—taskkill.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
5408taskkill /F /IM uran.exeC:\Windows\System32\taskkill.exe—ThunderKitty-Built.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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
Total events
5 103
Read events
5 102
Write events
1
Delete events
0

Modification events

(PID) Process:(7460) ThunderKitty-Built.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Microsoft Display Driver Manager
Value:
C:\Users\admin\AppData\Roaming\DisplayDriverUpdater.exe
Executable files
1
Suspicious files
1
Text files
3
Unknown types
0

Dropped files

PID
Process
Filename
Type
7460ThunderKitty-Built.exeC:\Users\admin\AppData\Local\Temp\ThunderKitty\Browsers\admin\Edge\Default\cookies.txttext
MD5:4E7E979B554CE1F04144AAF6C5F6A321
SHA256:DAA03BBC2A5969DD0129DD53FC3FA889BC1938DB3622C1C1B8DA9AA951401C73
7460ThunderKitty-Built.exeC:\Users\admin\AppData\Roaming\DisplayDriverUpdater.exeexecutable
MD5:DDB717EACDFDC3C24EB2DF2724677398
SHA256:E1EAEA80FC723C6AE674CB446CDD9B2BFD9E4093102E444EB86F0B1A4C5BDC75
7460ThunderKitty-Built.exeC:\Users\admin\AppData\Local\Temp\ThunderKitty\Browsers\admin\Edge\Default\history.txttext
MD5:C81D714E7822AB4D7E8327B8D547071E
SHA256:95C2BDD3CC8D4AB4623E655F47772A3F878DC2B66FF0AE16A23F9413C7C7AA31
7460ThunderKitty-Built.exeC:\Users\admin\AppData\Local\Temp\ThunderKitty.zipcompressed
MD5:994B0E233EF71C1401AEC12B478B4FCE
SHA256:306D82F779035BF7B61B00846EA112ED396479918F6E73F9153654AFFC0116A0
7460ThunderKitty-Built.exeC:\Users\admin\AppData\Local\Temp\ThunderKitty\Browsers\admin\Firefox\9kie7cg6.default-release\logins.txttext
MD5:3ABC2B9ECCDC1C9E0199A80659C0090F
SHA256:8ED25C40A8274013F5EC722DE7B1306751426F04FD138944FE2DBD083AD802DA
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
20
DNS requests
15
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
GET
200
23.48.23.169:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
—
—
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
—
—
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
6544
svchost.exe
GET
200
2.23.77.188:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
7228
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
—
—
whitelisted
7228
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
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
—
—
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
—
—
23.48.23.169:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
—
—
23.35.229.160:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
3216
svchost.exe
172.211.123.249:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
FR
whitelisted
6544
svchost.exe
40.126.32.133:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
6544
svchost.exe
2.23.77.188:80
ocsp.digicert.com
AKAMAI-AS
DE
whitelisted
7460
ThunderKitty-Built.exe
149.154.167.220:443
api.telegram.org
Telegram Messenger Inc
GB
whitelisted
7228
SIHClient.exe
4.245.163.56:443
slscr.update.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 40.127.240.158
  • 4.231.128.59
whitelisted
crl.microsoft.com
  • 23.48.23.169
  • 23.48.23.174
  • 23.48.23.181
  • 23.48.23.188
  • 23.48.23.168
  • 23.48.23.185
  • 23.48.23.177
  • 23.48.23.173
  • 23.48.23.176
whitelisted
google.com
  • 142.250.185.142
whitelisted
www.microsoft.com
  • 23.35.229.160
  • 95.101.149.131
whitelisted
client.wns.windows.com
  • 172.211.123.249
whitelisted
login.live.com
  • 40.126.32.133
  • 40.126.32.72
  • 20.190.160.2
  • 20.190.160.22
  • 20.190.160.65
  • 40.126.32.74
  • 20.190.160.20
  • 20.190.160.14
whitelisted
ocsp.digicert.com
  • 2.23.77.188
whitelisted
api.telegram.org
  • 149.154.167.220
whitelisted
slscr.update.microsoft.com
  • 4.245.163.56
whitelisted
fe3cr.delivery.mp.microsoft.com
  • 20.242.39.171
whitelisted

Threats

PID
Process
Class
Message
2196
svchost.exe
Misc activity
ET HUNTING Telegram API Domain in DNS Lookup
7460
ThunderKitty-Built.exe
Misc activity
ET HUNTING Observed Telegram API Domain (api .telegram .org in TLS SNI)
No debug info
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Reports
ThunderKitty-Built.exe