Analysis Overview
SHA256
74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcd
Threat Level: Known bad
The file 74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Disables Task Manager via registry modification
Disables cmd.exe use via registry modification
Checks computer location settings
Sets desktop wallpaper using registry
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Kills process with taskkill
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-06 01:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-06 01:01
Reported
2024-11-06 01:03
Platform
win7-20241010-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty" | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Disables Task Manager via registry modification
Disables cmd.exe use via registry modification
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "1" | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Control Panel\Desktop\Wallpaper | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Enumerates physical storage devices
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious behavior: CmdExeWriteProcessMemorySpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\regsvr32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe
"C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C taskkill /F /IM rundll32.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C regsvr32 user32.dll
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C rundll32 user32.dll
C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" user32.dll
C:\Windows\system32\taskkill.exe
taskkill /F /IM rundll32.exe
C:\Windows\system32\regsvr32.exe
regsvr32 user32.dll
C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" user32.dll
C:\Windows\system32\rundll32.exe
rundll32 user32.dll
Network
Files
memory/2000-0-0x000007FEF611E000-0x000007FEF611F000-memory.dmp
memory/2000-1-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp
memory/2000-2-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp
memory/2000-3-0x000007FEF611E000-0x000007FEF611F000-memory.dmp
memory/2000-4-0x000007FEF5E60000-0x000007FEF67FD000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-06 01:01
Reported
2024-11-06 01:03
Platform
win10v2004-20241007-en
Max time kernel
99s
Max time network
99s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "empty" | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Disables Task Manager via registry modification
Disables cmd.exe use via registry modification
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableCMD = "1" | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\Desktop\Wallpaper | C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe | N/A |
Enumerates physical storage devices
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskkill.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe
"C:\Users\Admin\AppData\Local\Temp\74bd6ba5807d3181a8608f30ec3b27d050510e3a39a41cdf20bdfa03b147efcdN.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C taskkill /F /IM rundll32.exe
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C regsvr32 user32.dll
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C rundll32 user32.dll
C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" user32.dll
C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" user32.dll
C:\Windows\system32\taskkill.exe
taskkill /F /IM rundll32.exe
C:\Windows\system32\regsvr32.exe
regsvr32 user32.dll
C:\Windows\system32\rundll32.exe
rundll32 user32.dll
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 105.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
Files
memory/1952-0-0x00007FFCED675000-0x00007FFCED676000-memory.dmp
memory/1952-1-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp
memory/1952-2-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp
memory/1952-3-0x00007FFCED675000-0x00007FFCED676000-memory.dmp
memory/1952-4-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp
memory/1952-6-0x00007FFCED3C0000-0x00007FFCEDD61000-memory.dmp