Analysis Overview
SHA256
90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4
Threat Level: Known bad
The file 90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe was found to be: Known bad.
Malicious Activity Summary
njRAT/Bladabindi
Njrat family
Drops startup file
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Scheduled Task/Job: Scheduled Task
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-28 08:10
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-28 08:10
Reported
2024-09-28 08:13
Platform
win7-20240903-en
Max time kernel
149s
Max time network
144s
Command Line
Signatures
njRAT/Bladabindi
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.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 |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dllhost.exe\" .." | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dllhost.exe\" .." | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Server.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Server.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Server.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe
"C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe"
C:\Users\Admin\AppData\Roaming\Dllhost.exe
"C:\Users\Admin\AppData\Roaming\Dllhost.exe"
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
C:\Windows\system32\taskeng.exe
taskeng.exe {18FD357F-F648-4A3E-ACEA-6CF2E75FEA91} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp |
Files
memory/2216-0-0x0000000074CA1000-0x0000000074CA2000-memory.dmp
memory/2216-1-0x0000000074CA0000-0x000000007524B000-memory.dmp
memory/2216-2-0x0000000074CA0000-0x000000007524B000-memory.dmp
C:\Users\Admin\AppData\Roaming\Dllhost.exe
| MD5 | 82a9a2a48d290eea02ea5f46a8f31dfb |
| SHA1 | dc20b8cd4f74b9a63cf2d90c5cbbd21839945c89 |
| SHA256 | 90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4 |
| SHA512 | e3988c2ee085cf228603f70b54eaadca3a9ba5caa72661eaed7eb20217042b52c2539bf77bd4c40e7165d02bcdb605379c94f279fa671beaaaed49b59d5cc833 |
memory/2812-10-0x0000000074CA0000-0x000000007524B000-memory.dmp
memory/2812-11-0x0000000074CA0000-0x000000007524B000-memory.dmp
memory/2812-12-0x0000000074CA0000-0x000000007524B000-memory.dmp
memory/2216-13-0x0000000074CA0000-0x000000007524B000-memory.dmp
memory/2216-14-0x0000000074CA0000-0x000000007524B000-memory.dmp
memory/2812-17-0x0000000074CA0000-0x000000007524B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-28 08:10
Reported
2024-09-28 08:13
Platform
win10v2004-20240802-en
Max time kernel
150s
Max time network
150s
Command Line
Signatures
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.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 |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dllhost.exe\" .." | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dllhost.exe\" .." | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Server.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Server.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\Server.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4840 wrote to memory of 4156 | N/A | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe |
| PID 4840 wrote to memory of 4156 | N/A | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe |
| PID 4840 wrote to memory of 4156 | N/A | C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe | C:\Users\Admin\AppData\Roaming\Dllhost.exe |
| PID 4156 wrote to memory of 2256 | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4156 wrote to memory of 2256 | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.exe | C:\Windows\SysWOW64\schtasks.exe |
| PID 4156 wrote to memory of 2256 | N/A | C:\Users\Admin\AppData\Roaming\Dllhost.exe | C:\Windows\SysWOW64\schtasks.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe
"C:\Users\Admin\AppData\Local\Temp\90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4.exe"
C:\Users\Admin\AppData\Roaming\Dllhost.exe
"C:\Users\Admin\AppData\Roaming\Dllhost.exe"
C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| N/A | 192.168.234.154:5555 | tcp | |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| N/A | 192.168.234.154:5555 | tcp | |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp | |
| N/A | 192.168.234.154:5555 | tcp |
Files
memory/4840-0-0x0000000074EF2000-0x0000000074EF3000-memory.dmp
memory/4840-1-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/4840-2-0x0000000074EF0000-0x00000000754A1000-memory.dmp
C:\Users\Admin\AppData\Roaming\Dllhost.exe
| MD5 | 82a9a2a48d290eea02ea5f46a8f31dfb |
| SHA1 | dc20b8cd4f74b9a63cf2d90c5cbbd21839945c89 |
| SHA256 | 90a3ee4bb184d38630de9018450ed6be6fdeb2e6b562ccd04fc88f0ad0c865f4 |
| SHA512 | e3988c2ee085cf228603f70b54eaadca3a9ba5caa72661eaed7eb20217042b52c2539bf77bd4c40e7165d02bcdb605379c94f279fa671beaaaed49b59d5cc833 |
memory/4156-12-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/4156-14-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/4840-13-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/4156-17-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/3296-20-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/3296-21-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/3296-22-0x0000000074EF0000-0x00000000754A1000-memory.dmp
memory/3296-24-0x0000000074EF0000-0x00000000754A1000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Server.exe.log
| MD5 | 42157868488d3ef98c00e3fa12f064be |
| SHA1 | aad391be9ac3f6ce1ced49583690486a5f4186fb |
| SHA256 | b9520170e84597186ba5cc223b9c2773f70d0cda088950bae2182e3b2237995c |
| SHA512 | 8f4a4bd63ceefc34158ea23f3a73dcc2848eeacdba8355d1251a96b4e0c18e2f3b0c4939be359f874f81fe4ee63283b8be43a70fe2dbaa2e64784333d10a2471 |