File name:

ryuk.exe

Full analysis: https://app.any.run/tasks/7b9b8090-238b-48bc-9393-07cb4294ac20
Verdict: Malicious activity
Threats:

Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying.

Malware Trends Tracker     >>>
Analysis date: June 21, 2025, 22:12:07
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
ryuk
ransomware
stealer
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32+ executable (console) x86-64, for MS Windows, 7 sections
MD5:

B18709AB1066178D168EC3DE16EA8A45

SHA1:

4545D9DB1B2CF2B2DA87DFC2936511C79492CFB5

SHA256:

48E41FE2A98B4188BE62ADBDBA5D89F05D3FA84C39664217C9A78772E669FF3D

SSDEEP:

49152:puLGkfdv59gjsoqJT6QlLAM0xAMd6YTx1H:put59gc564Aq8L

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

    • RYUK mutex has been found

      • ryuk.exe (PID: 2528)

    • Uses Task Scheduler to autorun other applications

      • cmd.exe (PID: 6188)
      • cmd.exe (PID: 4892)
      • cmd.exe (PID: 6936)
      • cmd.exe (PID: 7008)

    • Create files in the Startup directory

      • cmd.exe (PID: 3652)

    • Renames files like ransomware

      • ryuk.exe (PID: 2528)

    • Steals credentials from Web Browsers

      • ryuk.exe (PID: 2528)

    • Actions looks like stealing of personal data

      • ryuk.exe (PID: 2528)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • ryuk.exe (PID: 2528)
      • cmd.exe (PID: 3652)

    • Starts CMD.EXE for commands execution

      • ryuk.exe (PID: 2528)
      • cmd.exe (PID: 4868)
      • cmd.exe (PID: 6852)

    • Uses ATTRIB.EXE to modify file attributes

      • cmd.exe (PID: 5764)
      • cmd.exe (PID: 1496)
      • cmd.exe (PID: 5528)

    • Application launched itself

      • cmd.exe (PID: 6852)
      • cmd.exe (PID: 4868)

    • Uses TASKKILL.EXE to kill process

      • cmd.exe (PID: 6852)
      • cmd.exe (PID: 4500)

    • Uses ICACLS.EXE to modify access control lists

      • cmd.exe (PID: 4884)

    • Uses REG/REGEDIT.EXE to modify registry

      • cmd.exe (PID: 4700)
      • cmd.exe (PID: 2964)
      • cmd.exe (PID: 1352)
      • cmd.exe (PID: 3640)
      • cmd.exe (PID: 6828)

    • Found strings related to reading or modifying Windows Defender settings

      • ryuk.exe (PID: 2528)

    • Uses pipe srvsvc via SMB (transferring data)

      • ryuk.exe (PID: 2528)

    • Creates file in the systems drive root

      • ryuk.exe (PID: 2528)

  • INFO

    • Creates files in the program directory

      • ryuk.exe (PID: 2528)
      • cmd.exe (PID: 6472)

    • Checks supported languages

      • ryuk.exe (PID: 2528)

    • Launching a file from the Startup directory

      • cmd.exe (PID: 3652)

    • Reads the machine GUID from the registry

      • ryuk.exe (PID: 2528)

    • Reads the computer name

      • ryuk.exe (PID: 2528)

    • Creates files or folders in the user directory

      • ryuk.exe (PID: 2528)

    • Manual execution by a user

      • notepad.exe (PID: 3028)

    • Reads security settings of Internet Explorer

      • notepad.exe (PID: 3028)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic Win/DOS Executable (50)
.exe | DOS Executable Generic (49.9)

EXIF

EXE

MachineType: AMD AMD64
TimeStamp: 2022:11:09 18:02:53+00:00
ImageFileCharacteristics: Executable, Large address aware
PEType: PE32+
LinkerVersion: 14.32
CodeSize: 622592
InitializedDataSize: 295424
UninitializedDataSize: -
EntryPoint: 0x623b0
OSVersion: 6
ImageVersion: -
SubsystemVersion: 6
Subsystem: Windows command line
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
180
Monitored processes
44
Malicious processes
1
Suspicious processes
1

Behavior graph

Click at the process to see the details
start #RYUK ryuk.exe conhost.exe no specs cmd.exe schtasks.exe no specs cmd.exe cmd.exe no specs cmd.exe schtasks.exe no specs cmd.exe no specs attrib.exe no specs cmd.exe schtasks.exe no specs cmd.exe schtasks.exe no specs cmd.exe no specs attrib.exe no specs cmd.exe no specs attrib.exe no specs cmd.exe no specs cmd.exe no specs conhost.exe no specs cmd.exe no specs cmd.exe no specs taskkill.exe no specs conhost.exe no specs cmd.exe no specs reg.exe no specs icacls.exe no specs cmd.exe no specs taskkill.exe no specs cmd.exe no specs cmd.exe no specs cmd.exe no specs cmd.exe no specs cmd.exe no specs reg.exe no specs cmd.exe no specs reg.exe no specs cmd.exe no specs reg.exe no specs cmd.exe no specs reg.exe no specs slui.exe no specs notepad.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
516\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—ryuk.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
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
1036reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /fC:\Windows\System32\reg.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Registry Console Tool
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\reg.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
1352C:\WINDOWS\system32\cmd.exe /c reg delete HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SafeBoot /va /FC:\Windows\System32\cmd.exe—ryuk.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\sechost.dll
1480icacls * /grant Everyone:(OI)(CI)F /T /C /QC:\Windows\System32\icacls.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\icacls.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
1496C:\WINDOWS\system32\cmd.exe /c attrib +h +s ryuk.exeC:\Windows\System32\cmd.exe—ryuk.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\sechost.dll
2032attrib +h +s C:\ProgramData\ryuk.exeC:\Windows\System32\attrib.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Attribute Utility
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\attrib.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\ulib.dll
c:\windows\system32\fsutilext.dll
2428C:\WINDOWS\System32\slui.exe -EmbeddingC:\Windows\System32\slui.exe—svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Activation Client
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
2528"C:\Users\admin\Desktop\ryuk.exe" C:\Users\admin\Desktop\ryuk.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Modules
Images
c:\users\admin\desktop\ryuk.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\gdi32full.dll
c:\windows\system32\msvcp_win.dll
2964C:\WINDOWS\system32\cmd.exe /c reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /fC:\Windows\System32\cmd.exe—ryuk.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\sechost.dll
2976C:\WINDOWS\system32\cmd.exe /c Copy hrmlog2 C:\ProgramData\hrmlog2C:\Windows\System32\cmd.exe—ryuk.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\advapi32.dll
Total events
31 390
Read events
31 390
Write events
0
Delete events
0

Modification events

No data
Executable files
109
Suspicious files
917
Text files
387
Unknown types
0

Dropped files

PID
Process
Filename
Type
2528ryuk.exeC:\ProgramData\Adobe\ARM\Acrobat_23.001.20093\AcroRdrDCx64Upd2300820470_MUI.msp.[Cara@onionmail.org].RYK —
MD5:—
SHA256:—
2528ryuk.exeC:\ProgramData\Microsoft\User Account Pictures\admin.dat.[Cara@onionmail.org].RYK —
MD5:—
SHA256:—
2528ryuk.exeC:\ProgramData\Microsoft OneDrive\setup\refcount.ini.[Cara@onionmail.org].RYK —
MD5:—
SHA256:—
2528ryuk.exeC:\ProgramData\ryuk.exeexecutable
MD5:B18709AB1066178D168EC3DE16EA8A45
SHA256:48E41FE2A98B4188BE62ADBDBA5D89F05D3FA84C39664217C9A78772E669FF3D
2528ryuk.exeC:\ProgramData\RyukReadMe.htmltext
MD5:CE4EFF51A051B7D03F22F4F28A97706E
SHA256:19D97C2CF647D7A31051D8BBEB082D2BF5DC7E7B70CF51A898BF269037E4110A
2528ryuk.exeC:\ProgramData\RyukReadMe.txttext
MD5:23CB6BCE418D720B600FB36625CEA4DF
SHA256:4EF805E48AC50FDA04EEFFFF3A725481151DD1DCCAF462C02105AA27F630E136
2528ryuk.exeC:\ProgramData\hrmlog1binary
MD5:5D7355073F5B5139399555E45A167022
SHA256:D3275E5CF2BDBD9A8FF19DBA4B9FC74CF9E0254D03F6218AC02B3BF4D4A4CF13
2528ryuk.exeC:\Users\admin\Desktop\RYUKIDtext
MD5:2BBA0726586E5CC01B954ECB1CFC43F5
SHA256:D47A3844EE40060852CFBFC43438F2BBED04C6539AFA60BA92E251523AF7E831
6472cmd.exeC:\ProgramData\RYUKIDtext
MD5:2BBA0726586E5CC01B954ECB1CFC43F5
SHA256:D47A3844EE40060852CFBFC43438F2BBED04C6539AFA60BA92E251523AF7E831
2528ryuk.exeC:\Users\admin\Desktop\hrmlog2binary
MD5:F05D41642BA6F5370FF510370FB1C441
SHA256:7D2A73234283E0D2B2721C54EACA58F4D02FFF9284A695C07C251285F20DFC07
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
35
DNS requests
15
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3676
svchost.exe
GET
200
2.17.190.73:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
1268
svchost.exe
GET
200
23.53.40.176:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
1268
svchost.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
1232
SIHClient.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
1232
SIHClient.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.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
1268
svchost.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
5944
MoUsoCoreWorker.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
6960
RUXIMICS.exe
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.2:445
—
—
—
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
4
System
192.168.100.2:139
—
—
—
whitelisted
4
System
192.168.100.2:137
—
—
—
whitelisted
2336
svchost.exe
172.211.123.249:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
FR
whitelisted
3676
svchost.exe
40.126.31.131:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 40.127.240.158
  • 4.231.128.59
whitelisted
google.com
  • 142.250.74.206
whitelisted
login.live.com
  • 40.126.31.131
  • 20.190.159.71
  • 40.126.31.128
  • 20.190.159.0
  • 40.126.31.1
  • 40.126.31.129
  • 40.126.31.2
  • 20.190.159.2
whitelisted
client.wns.windows.com
  • 172.211.123.249
whitelisted
ocsp.digicert.com
  • 2.17.190.73
whitelisted
crl.microsoft.com
  • 23.53.40.176
  • 23.53.40.178
whitelisted
www.microsoft.com
  • 23.35.229.160
whitelisted
nexusrules.officeapps.live.com
  • 52.111.236.23
whitelisted
slscr.update.microsoft.com
  • 52.149.20.212
whitelisted
fe3cr.delivery.mp.microsoft.com
  • 13.85.23.206
whitelisted

Threats

No threats detected
No debug info
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Reports
ryuk.exe