Analysis Overview
SHA256
4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c
Threat Level: Shows suspicious behavior
The file 4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Writes to the Master Boot Record (MBR)
Unsigned PE
Suspicious use of WriteProcessMemory
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 07:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 07:13
Reported
2024-05-26 07:16
Platform
win7-20231129-en
Max time kernel
120s
Max time network
120s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.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\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe
"C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c taskkill /f /im "4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe" &start "" "4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe" &exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im "4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe"
C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe
"4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe"
Network
| Country | Destination | Domain | Proto |
| CN | 124.221.189.58:9001 | tcp |
Files
memory/2936-3-0x0000000000290000-0x0000000000291000-memory.dmp
memory/2936-5-0x0000000000290000-0x0000000000291000-memory.dmp
memory/2936-4-0x0000000000290000-0x0000000000291000-memory.dmp
memory/2936-2-0x0000000000290000-0x0000000000291000-memory.dmp
memory/2936-1-0x0000000000290000-0x0000000000291000-memory.dmp
memory/2936-0-0x0000000000290000-0x0000000000291000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32.lib
| MD5 | 031ad1ecd93701d39265771942ec716c |
| SHA1 | cb3ef507bf0e848894fbb96a29bfc94a0c302152 |
| SHA256 | 9a7fde2ea7883701bf858e0daef74d787a31c3cbd9f1171cec0a3a382ee9e6ba |
| SHA512 | 374dab32b6304834c7acd8b5e6701ece016bf57d3abdd416ef2b63f7cbda24c9e59f9dfc27b6823ac6256bbab38aace74334dec7d57f1ef6cb9b80c239003bae |
memory/2572-11-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2572-14-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2572-13-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2572-12-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2572-10-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2572-15-0x0000000003990000-0x0000000003991000-memory.dmp
memory/2572-19-0x0000000003990000-0x0000000003991000-memory.dmp
memory/2572-18-0x0000000003990000-0x0000000003991000-memory.dmp
memory/2572-17-0x0000000003990000-0x0000000003991000-memory.dmp
memory/2572-16-0x0000000003990000-0x0000000003991000-memory.dmp
memory/2572-20-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2572-21-0x0000000003990000-0x0000000003991000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 07:13
Reported
2024-05-26 07:16
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.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\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\taskkill.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe
"C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c taskkill /f /im "4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe" &start "" "4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe" &exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im "4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe"
C:\Users\Admin\AppData\Local\Temp\4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe
"4b65976bb96e78fd4f16ba4c1cdddc1f6c5202a53cba52abcd28f5fb4a30ac7c.exe"
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 | 232.168.11.51.in-addr.arpa | udp |
| CN | 124.221.189.58:9001 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| BE | 88.221.83.224:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 224.83.221.88.in-addr.arpa | udp |
| BE | 88.221.83.224:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.98.74.40.in-addr.arpa | udp |
Files
memory/4144-2-0x0000000002810000-0x0000000002811000-memory.dmp
memory/4144-7-0x0000000002810000-0x0000000002811000-memory.dmp
memory/4144-5-0x0000000002810000-0x0000000002811000-memory.dmp
memory/4144-4-0x0000000002810000-0x0000000002811000-memory.dmp
memory/4144-3-0x0000000002810000-0x0000000002811000-memory.dmp
memory/4144-6-0x0000000002810000-0x0000000002811000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32.lib
| MD5 | 031ad1ecd93701d39265771942ec716c |
| SHA1 | cb3ef507bf0e848894fbb96a29bfc94a0c302152 |
| SHA256 | 9a7fde2ea7883701bf858e0daef74d787a31c3cbd9f1171cec0a3a382ee9e6ba |
| SHA512 | 374dab32b6304834c7acd8b5e6701ece016bf57d3abdd416ef2b63f7cbda24c9e59f9dfc27b6823ac6256bbab38aace74334dec7d57f1ef6cb9b80c239003bae |
memory/2164-14-0x0000000002A60000-0x0000000002A61000-memory.dmp
memory/2164-13-0x0000000002A60000-0x0000000002A61000-memory.dmp
memory/2164-12-0x0000000002A60000-0x0000000002A61000-memory.dmp
memory/2164-10-0x0000000002A60000-0x0000000002A61000-memory.dmp
memory/2164-11-0x0000000002A60000-0x0000000002A61000-memory.dmp
memory/2164-16-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-17-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-15-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-18-0x0000000002A60000-0x0000000002A61000-memory.dmp
memory/2164-21-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-22-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-20-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-19-0x00000000039E0000-0x00000000039E1000-memory.dmp
memory/2164-23-0x0000000003A20000-0x0000000003A21000-memory.dmp