Analysis Overview
SHA256
33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918
Threat Level: Shows suspicious behavior
The file 33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
Writes to the Master Boot Record (MBR)
Unsigned PE
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-26 08:26
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-26 08:26
Reported
2024-05-26 08:28
Platform
win7-20240419-en
Max time kernel
120s
Max time network
121s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.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\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.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\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe
"C:\Users\Admin\AppData\Local\Temp\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c taskkill /f /im "33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe" &start "" "33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe" &exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im "33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe"
C:\Users\Admin\AppData\Local\Temp\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe
"33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe"
Network
| Country | Destination | Domain | Proto |
| CN | 124.221.189.58:9001 | tcp |
Files
memory/2128-0-0x0000000000400000-0x0000000000A31000-memory.dmp
memory/2128-3-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2128-8-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2128-7-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2128-6-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2128-5-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2128-4-0x0000000000250000-0x0000000000251000-memory.dmp
memory/2128-9-0x0000000000400000-0x0000000000A31000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32.lib
| MD5 | 031ad1ecd93701d39265771942ec716c |
| SHA1 | cb3ef507bf0e848894fbb96a29bfc94a0c302152 |
| SHA256 | 9a7fde2ea7883701bf858e0daef74d787a31c3cbd9f1171cec0a3a382ee9e6ba |
| SHA512 | 374dab32b6304834c7acd8b5e6701ece016bf57d3abdd416ef2b63f7cbda24c9e59f9dfc27b6823ac6256bbab38aace74334dec7d57f1ef6cb9b80c239003bae |
memory/2608-11-0x0000000000400000-0x0000000000A31000-memory.dmp
memory/2608-14-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-18-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-17-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-16-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-15-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-13-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-23-0x00000000039A0000-0x00000000039A1000-memory.dmp
memory/2608-22-0x00000000039A0000-0x00000000039A1000-memory.dmp
memory/2608-21-0x00000000039A0000-0x00000000039A1000-memory.dmp
memory/2608-20-0x00000000039A0000-0x00000000039A1000-memory.dmp
memory/2608-19-0x00000000039A0000-0x00000000039A1000-memory.dmp
memory/2608-24-0x0000000000400000-0x0000000000A31000-memory.dmp
memory/2608-25-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/2608-26-0x00000000039A0000-0x00000000039A1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-26 08:26
Reported
2024-05-26 08:28
Platform
win10v2004-20240508-en
Max time kernel
133s
Max time network
126s
Command Line
Signatures
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.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\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.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\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe
"C:\Users\Admin\AppData\Local\Temp\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c taskkill /f /im "33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe" &start "" "33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe" &exit
C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im "33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe"
C:\Users\Admin\AppData\Local\Temp\33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe
"33ff116d90d0b6ba22a3494893aacfbc09cbdeff9fd23176c0cf2b2c1e0da918.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4036,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=1960 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| CN | 124.221.189.58:9001 | tcp | |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 44.56.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.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 | 92.16.208.104.in-addr.arpa | udp |
Files
memory/4972-0-0x0000000000400000-0x0000000000A31000-memory.dmp
memory/4972-6-0x00000000028C0000-0x00000000028C1000-memory.dmp
memory/4972-5-0x00000000028C0000-0x00000000028C1000-memory.dmp
memory/4972-4-0x00000000028C0000-0x00000000028C1000-memory.dmp
memory/4972-3-0x00000000028C0000-0x00000000028C1000-memory.dmp
memory/4972-7-0x0000000000400000-0x0000000000A31000-memory.dmp
memory/4440-8-0x0000000000400000-0x0000000000A31000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32.lib
| MD5 | 031ad1ecd93701d39265771942ec716c |
| SHA1 | cb3ef507bf0e848894fbb96a29bfc94a0c302152 |
| SHA256 | 9a7fde2ea7883701bf858e0daef74d787a31c3cbd9f1171cec0a3a382ee9e6ba |
| SHA512 | 374dab32b6304834c7acd8b5e6701ece016bf57d3abdd416ef2b63f7cbda24c9e59f9dfc27b6823ac6256bbab38aace74334dec7d57f1ef6cb9b80c239003bae |
memory/4440-16-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-15-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-14-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-13-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-12-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-11-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-17-0x0000000000400000-0x0000000000A31000-memory.dmp
memory/4440-18-0x0000000002870000-0x0000000002871000-memory.dmp
memory/4440-19-0x0000000003920000-0x0000000003921000-memory.dmp