Analysis Overview
SHA256
809ccbd6dc5ce0e1e654f8dc89aa5de50e3bebc9bd6d5c69259eecf9240d8a43
Threat Level: Known bad
The file KarolinaUtility.exe was found to be: Known bad.
Malicious Activity Summary
njRAT/Bladabindi
Modifies Windows Firewall
Checks computer location settings
Executes dropped EXE
Drops startup file
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in System32 directory
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-28 12:34
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-28 12:34
Reported
2024-04-28 12:37
Platform
win10v2004-20240419-en
Max time kernel
150s
Max time network
54s
Command Line
Signatures
njRAT/Bladabindi
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9832c3e9cd3e821e5314be8029b17d5eWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9832c3e9cd3e821e5314be8029b17d5eWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Program Files (x86)\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe
"C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe"
C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
C:\Windows\SysWOW64\netsh.exe
netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp |
Files
memory/4460-0-0x0000000000CC0000-0x0000000001040000-memory.dmp
memory/4460-1-0x00000000746B0000-0x0000000074C61000-memory.dmp
memory/4460-2-0x00000000746B0000-0x0000000074C61000-memory.dmp
memory/4460-3-0x0000000003340000-0x0000000003350000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\server.exe
| MD5 | b1fd40e0d774fc34ca7e3f19aabf6ab1 |
| SHA1 | 938e853894b0d5f157557bedfa531d49c1771f99 |
| SHA256 | 809ccbd6dc5ce0e1e654f8dc89aa5de50e3bebc9bd6d5c69259eecf9240d8a43 |
| SHA512 | d70f95b2bff8af647115cb958180f1ef327ad57f48f22a4113480bd818005de55f2457c381c9486adb21e2340efe56dc2803a21ecb55075b8e1a5e1513b946c2 |
memory/2216-14-0x0000000000450000-0x00000000007D0000-memory.dmp
memory/4460-17-0x00000000746B0000-0x0000000074C61000-memory.dmp
memory/4460-16-0x0000000000CC0000-0x0000000001040000-memory.dmp
memory/2216-18-0x00000000746B0000-0x0000000074C61000-memory.dmp
C:\Users\Admin\AppData\Roaming\app
| MD5 | 7eb860abfe2281298575b5216ef42bc6 |
| SHA1 | d4dfd7ac22dcd07da34306c40b4e5367a969cda5 |
| SHA256 | 83d46461bf45f00cb4fc5df9679b2bd82dbf54eeb022ca1711eefb4b2e7b7689 |
| SHA512 | 427bfc41f0514ee10d400eea38f22f6fac6f9d5ecd84ad7adb1161ff9355e47c04ff411e172fafcd23c137ad1528ed2f2cb95d247613ae5550c089633f18994d |
memory/2216-46-0x0000000000450000-0x00000000007D0000-memory.dmp
memory/2216-47-0x00000000746B0000-0x0000000074C61000-memory.dmp
memory/2216-48-0x00000000034A0000-0x00000000034B0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-28 12:34
Reported
2024-04-28 12:37
Platform
win11-20240419-en
Max time kernel
150s
Max time network
150s
Command Line
Signatures
njRAT/Bladabindi
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9832c3e9cd3e821e5314be8029b17d5eWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9832c3e9cd3e821e5314be8029b17d5eWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Explower.exe | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\server.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe
"C:\Users\Admin\AppData\Local\Temp\KarolinaUtility.exe"
C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
C:\Windows\SysWOW64\netsh.exe
netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| US | 8.8.8.8:53 | cxcs.microsoft.net | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp | |
| N/A | 127.0.0.1:13595 | tcp |
Files
memory/4480-0-0x00000000009C0000-0x0000000000D40000-memory.dmp
memory/4480-1-0x0000000074450000-0x0000000074A01000-memory.dmp
memory/4480-2-0x0000000074450000-0x0000000074A01000-memory.dmp
memory/4480-3-0x00000000037E0000-0x00000000037F0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\server.exe
| MD5 | b1fd40e0d774fc34ca7e3f19aabf6ab1 |
| SHA1 | 938e853894b0d5f157557bedfa531d49c1771f99 |
| SHA256 | 809ccbd6dc5ce0e1e654f8dc89aa5de50e3bebc9bd6d5c69259eecf9240d8a43 |
| SHA512 | d70f95b2bff8af647115cb958180f1ef327ad57f48f22a4113480bd818005de55f2457c381c9486adb21e2340efe56dc2803a21ecb55075b8e1a5e1513b946c2 |
memory/4480-17-0x0000000074450000-0x0000000074A01000-memory.dmp
memory/4072-16-0x0000000000FD0000-0x0000000001350000-memory.dmp
memory/4480-15-0x00000000009C0000-0x0000000000D40000-memory.dmp
memory/4072-19-0x00000000040E0000-0x00000000040F0000-memory.dmp
memory/4072-18-0x0000000074450000-0x0000000074A01000-memory.dmp
C:\Users\Admin\AppData\Roaming\app
| MD5 | 7eb860abfe2281298575b5216ef42bc6 |
| SHA1 | d4dfd7ac22dcd07da34306c40b4e5367a969cda5 |
| SHA256 | 83d46461bf45f00cb4fc5df9679b2bd82dbf54eeb022ca1711eefb4b2e7b7689 |
| SHA512 | 427bfc41f0514ee10d400eea38f22f6fac6f9d5ecd84ad7adb1161ff9355e47c04ff411e172fafcd23c137ad1528ed2f2cb95d247613ae5550c089633f18994d |
memory/4072-47-0x0000000000FD0000-0x0000000001350000-memory.dmp
memory/4072-49-0x00000000040E0000-0x00000000040F0000-memory.dmp
memory/4072-48-0x0000000074450000-0x0000000074A01000-memory.dmp