download:

/nut.exe

Full analysis: https://app.any.run/tasks/f72bc168-4795-43a4-961c-e04ac685ded9
Verdict: Malicious activity
Threats:

Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely.

Malware Trends Tracker     >>>
Analysis date: August 04, 2024, 09:28:12
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
quasar
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

232E7B89F4BE6CBC0C706F8520B1C647

SHA1:

359E0860271FC42C64F2A94593515C4111BE62B0

SHA256:

DF1A4FC766FDE3AD56195E192C5F0E33BD0EF088128CCA6C95F10E3135669963

SSDEEP:

98304:i2uiieRyd72QsLDil92m3GJEDg9/gbPMt2WP/+uu9:XmgA

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

    • Drops the executable file immediately after the start

      • nut.exe (PID: 6404)

    • Changes the autorun value in the registry

      • nut.exe (PID: 6404)
      • MusNotifyIcon.exe (PID: 6436)

    • QUASAR has been detected (YARA)

      • MusNotifyIcon.exe (PID: 6436)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • nut.exe (PID: 6404)

    • Starts itself from another location

      • nut.exe (PID: 6404)

    • Connects to unusual port

      • MusNotifyIcon.exe (PID: 6436)

  • INFO

    • Reads Environment values

      • nut.exe (PID: 6404)
      • MusNotifyIcon.exe (PID: 6436)
      • nut.exe (PID: 6756)

    • Creates files or folders in the user directory

      • nut.exe (PID: 6404)

    • Reads the computer name

      • nut.exe (PID: 6404)
      • MusNotifyIcon.exe (PID: 6436)
      • nut.exe (PID: 6756)

    • Reads the machine GUID from the registry

      • nut.exe (PID: 6404)
      • MusNotifyIcon.exe (PID: 6436)
      • nut.exe (PID: 6756)

    • Checks supported languages

      • nut.exe (PID: 6404)
      • MusNotifyIcon.exe (PID: 6436)
      • nut.exe (PID: 6756)

    • Manual execution by a user

      • nut.exe (PID: 6756)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

Quasar

(PID) Process(6436) MusNotifyIcon.exe
Version1.4.1
C2 (3)45.45.238.213:4782
play.funpass.services:4782
Sub_DirSystem32
Install_NameMusNotifyIcon.exe
Mutexa89e48a0-4af2-4df4-8993-c5a3c3b6d1f7
StartupUpdate
Tagflyud
LogDirLogs
SignatureWmFs5hZZaopOnURJAlhBzwPSjr7POS0R3K+DVCPRxsxgEGXiAHPvNp8BJ+zO5YFwwKgRkIW4MYvUbrUpnBLyH6NxmP3IEiP58OlBcrvWfAiYIxRGt59iqIlTiUBUkw+yFf34RloWclmAIRoRJ70AxfbbTSZeZZhcuP1zT196txQOZUIJOrhixZWg0J9WXxFa5AL0GM2rolIhZg0p6x+UCBTVP3835xGtGYrankGaP3C46b6etuTFQcvVmiZYS+2ev6vFNswEWi+WkUt57CnctOdIjbw8OjiDd0kR2P9U0IJL...
CertificateMIIE9DCCAtygAwIBAgIQAOG4JofKQUZCaN88Umu4xTANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTIzMDcyNTIzMTMyOFoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAoFV1fmlh5L8tsOcYJ1jAWX+GRsFJXNXaj5W7UWnlMb53kBjGgyUfctD+lZV5puERQrRPynNX...
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2023:03:12 16:16:39+00:00
ImageFileCharacteristics: Executable, 32-bit
PEType: PE32
LinkerVersion: 8
CodeSize: 3261952
InitializedDataSize: 3584
UninitializedDataSize: -
EntryPoint: 0x31e42e
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 10.0.20348.1070
ProductVersionNumber: 10.0.20348.1070
FileFlagsMask: 0x003f
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
Comments: -
CompanyName: Microsoft
FileDescription: MusNotifyIcon.exe
FileVersion: 10.0.20348.1070
InternalName: MusNotifyIcon.exe
LegalCopyright: © Microsoft Corporation. All rights reserv...
LegalTrademarks: -
OriginalFileName: MusNotifyIcon.exe
ProductName: Microsoft® Windows® Operating System
ProductVersion: 10.0.20348.1070
AssemblyVersion: 10.0.20348.1070
No data.
screenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
130
Monitored processes
3
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start nut.exe #QUASAR musnotifyicon.exe nut.exe

Process information

PID
CMD
Path
Indicators
Parent process
6404"C:\Users\admin\Desktop\nut.exe" C:\Users\admin\Desktop\nut.exe
explorer.exe
User:
admin
Company:
Microsoft
Integrity Level:
MEDIUM
Description:
MusNotifyIcon.exe
Exit code:
3
Version:
10.0.20348.1070
Modules
Images
c:\users\admin\desktop\nut.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.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
6436"C:\Users\admin\AppData\Roaming\System32\MusNotifyIcon.exe"C:\Users\admin\AppData\Roaming\System32\MusNotifyIcon.exe
nut.exe
User:
admin
Company:
Microsoft
Integrity Level:
MEDIUM
Description:
MusNotifyIcon.exe
Version:
10.0.20348.1070
Modules
Images
c:\users\admin\appdata\roaming\system32\musnotifyicon.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.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
Quasar
(PID) Process(6436) MusNotifyIcon.exe
Version1.4.1
C2 (3)45.45.238.213:4782
play.funpass.services:4782
Sub_DirSystem32
Install_NameMusNotifyIcon.exe
Mutexa89e48a0-4af2-4df4-8993-c5a3c3b6d1f7
StartupUpdate
Tagflyud
LogDirLogs
SignatureWmFs5hZZaopOnURJAlhBzwPSjr7POS0R3K+DVCPRxsxgEGXiAHPvNp8BJ+zO5YFwwKgRkIW4MYvUbrUpnBLyH6NxmP3IEiP58OlBcrvWfAiYIxRGt59iqIlTiUBUkw+yFf34RloWclmAIRoRJ70AxfbbTSZeZZhcuP1zT196txQOZUIJOrhixZWg0J9WXxFa5AL0GM2rolIhZg0p6x+UCBTVP3835xGtGYrankGaP3C46b6etuTFQcvVmiZYS+2ev6vFNswEWi+WkUt57CnctOdIjbw8OjiDd0kR2P9U0IJL...
CertificateMIIE9DCCAtygAwIBAgIQAOG4JofKQUZCaN88Umu4xTANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTIzMDcyNTIzMTMyOFoYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAoFV1fmlh5L8tsOcYJ1jAWX+GRsFJXNXaj5W7UWnlMb53kBjGgyUfctD+lZV5puERQrRPynNX...
6756"C:\Users\admin\Desktop\nut.exe" C:\Users\admin\Desktop\nut.exe
explorer.exe
User:
admin
Company:
Microsoft
Integrity Level:
HIGH
Description:
MusNotifyIcon.exe
Exit code:
2
Version:
10.0.20348.1070
Modules
Images
c:\users\admin\desktop\nut.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.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
Total events
1 265
Read events
1 263
Write events
2
Delete events
0

Modification events

(PID) Process:(6404) nut.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Update
Value:
"C:\Users\admin\AppData\Roaming\System32\MusNotifyIcon.exe"
(PID) Process:(6436) MusNotifyIcon.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Update
Value:
"C:\Users\admin\AppData\Roaming\System32\MusNotifyIcon.exe"
Executable files
1
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
6404nut.exeC:\Users\admin\AppData\Roaming\System32\MusNotifyIcon.exeexecutable
MD5:232E7B89F4BE6CBC0C706F8520B1C647
SHA256:DF1A4FC766FDE3AD56195E192C5F0E33BD0EF088128CCA6C95F10E3135669963
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
38
DNS requests
17
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
4436
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
5336
SearchApp.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D
unknown
—
—
whitelisted
4436
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
6864
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D
unknown
—
—
whitelisted
6908
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%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
1984
svchost.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
3888
svchost.exe
239.255.255.250:1900
—
—
—
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
3848
RUXIMICS.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
2120
MoUsoCoreWorker.exe
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
6436
MusNotifyIcon.exe
45.45.238.213:4782
play.funpass.services
—
—
malicious
4
System
192.168.100.255:137
—
—
—
whitelisted
1984
svchost.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
unknown
5336
SearchApp.exe
184.86.251.7:443
www.bing.com
Akamai International B.V.
DE
unknown
5336
SearchApp.exe
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.104.136.2
  • 40.127.240.158
whitelisted
google.com
  • 142.250.186.110
whitelisted
www.bing.com
  • 184.86.251.7
  • 184.86.251.13
  • 184.86.251.4
  • 184.86.251.9
  • 184.86.251.21
  • 184.86.251.20
  • 184.86.251.24
  • 184.86.251.17
  • 184.86.251.22
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
login.live.com
  • 40.126.32.134
  • 40.126.32.140
  • 40.126.32.68
  • 40.126.32.76
  • 40.126.32.136
  • 40.126.32.133
  • 40.126.32.72
  • 20.190.160.22
whitelisted
client.wns.windows.com
  • 40.113.110.67
whitelisted
th.bing.com
  • 184.86.251.7
  • 184.86.251.13
  • 184.86.251.4
  • 184.86.251.9
  • 184.86.251.21
  • 184.86.251.20
  • 184.86.251.24
  • 184.86.251.17
  • 184.86.251.22
whitelisted
fd.api.iris.microsoft.com
  • 20.223.35.26
whitelisted
arc.msn.com
  • 20.223.35.26
whitelisted
slscr.update.microsoft.com
  • 20.114.59.183
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
© 2017-2025 ANY.RUN ALL RIGHTS RESERVED
ANY.RUN
Reports
/nut.exe