Analysis Overview
SHA256
7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841
Threat Level: Known bad
The file 7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841 was found to be: Known bad.
Malicious Activity Summary
Ryuk
Drops desktop.ini file(s)
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Runs net.exe
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-02-20 05:30
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-02-20 05:30
Reported
2022-02-20 06:17
Platform
win7-en-20211208
Max time kernel
160s
Max time network
26s
Command Line
Signatures
Ryuk
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Documents and Settings\Admin\Recent\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\Startup\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\History\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\T0STXTA8\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Favorites\Links\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Downloads\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\Accessories\System Tools\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\Accessories\Accessibility\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\S3IV548V\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\History\History.IE5\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\K819CMRP\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Searches\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\SendTo\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\Accessories\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\QDAZQ7UR\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\NK9YD4KU\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\FNOUQX38\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\T0STXTA8\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Documents\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Favorites\Links for United States\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Contacts\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Documents\My Pictures\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Documents\My Videos\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Favorites\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\K819CMRP\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Windows Mail\Stationery\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\T7AS43M2\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Documents\My Music\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Saved Games\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\Administrative Tools\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\RO7FJFDE\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Desktop\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\FNOUQX38\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\T7AS43M2\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Links\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\Maintenance\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\S3IV548V\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\Content.IE5\RO7FJFDE\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\Start Menu\Programs\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\NK9YD4KU\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Temporary Internet Files\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Microsoft\Feeds Cache\QDAZQ7UR\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
Enumerates physical storage devices
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
C:\Windows\system32\taskhost.exe
"taskhost.exe"
C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe
"C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe"
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "audioendpointbuilder" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "audioendpointbuilder" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
C:\Windows\SysWOW64\net.exe
"C:\Windows\System32\net.exe" stop "samss" /y
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop "samss" /y
Network
Files
memory/960-54-0x0000000076151000-0x0000000076153000-memory.dmp
memory/1108-55-0x0000000030000000-0x000000003038A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-02-20 05:30
Reported
2022-02-20 06:16
Platform
win10v2004-en-20220112
Max time kernel
185s
Max time network
201s
Command Line
Signatures
Ryuk
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\History\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\AppData\Local\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\History\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| File opened for modification | C:\Documents and Settings\Admin\3D Objects\desktop.ini | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\sihost.exe
sihost.exe
C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup
C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe
"C:\Users\Admin\AppData\Local\Temp\7a08d89337170c61788759dcb0d9287551a338b592ebd915cd0249be33736841.exe"
C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
Network
| Country | Destination | Domain | Proto |
| NL | 92.123.77.56:80 | tcp | |
| NL | 67.26.105.254:80 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| NL | 104.80.224.57:443 | tcp | |
| US | 93.184.220.29:80 | tcp | |
| US | 8.8.8.8:53 | crl4.digicert.com | udp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |
| US | 93.184.220.29:80 | crl4.digicert.com | tcp |