Analysis Overview
SHA256
ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e
Threat Level: Known bad
The file ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe was found to be: Known bad.
Malicious Activity Summary
njRAT/Bladabindi
Njrat family
Drops startup file
Executes dropped EXE
Checks computer location settings
Adds Run key to start application
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-20 19:26
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-20 19:26
Reported
2024-01-20 19:29
Platform
win7-20231129-en
Max time kernel
149s
Max time network
139s
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:\Windows\Dllhost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | C:\Windows\Dllhost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Dllhost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." | C:\Windows\Dllhost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." | C:\Windows\Dllhost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Dllhost.exe | C:\Windows\Dllhost.exe | N/A |
| File created | C:\Windows\Dllhost.exe | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | N/A |
| N/A | N/A | C:\Windows\Dllhost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1924 wrote to memory of 2140 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
| PID 1924 wrote to memory of 2140 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
| PID 1924 wrote to memory of 2140 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
| PID 1924 wrote to memory of 2140 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe
"C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe"
C:\Windows\Dllhost.exe
"C:\Windows\Dllhost.exe"
Network
| Country | Destination | Domain | Proto |
| RU | 178.187.164.4:7777 | tcp | |
| RU | 178.187.164.4:7777 | tcp | |
| RU | 178.187.164.4:7777 | tcp | |
| RU | 178.187.164.4:7777 | tcp | |
| RU | 178.187.164.4:7777 | tcp | |
| RU | 178.187.164.4:7777 | tcp |
Files
memory/1924-0-0x0000000000A50000-0x0000000000A62000-memory.dmp
memory/1924-1-0x0000000074830000-0x0000000074F1E000-memory.dmp
memory/1924-2-0x00000000048B0000-0x00000000048F0000-memory.dmp
C:\Windows\Dllhost.exe
| MD5 | 1722c8695ca31163d93c6cf56f0c8530 |
| SHA1 | aa81bc701216ec1441565275c0bfab69376757a6 |
| SHA256 | ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e |
| SHA512 | 50830a24bb50df4db8f78522f9b4f65f689fc75d6503c1b4c8a4bb7a662e340adf3f80211523d90a4b838c1fc00d1dc01b1711ab954670b2f0ff609e9d926a1d |
memory/2140-9-0x0000000000BD0000-0x0000000000BE2000-memory.dmp
memory/1924-10-0x0000000074830000-0x0000000074F1E000-memory.dmp
memory/2140-11-0x0000000074830000-0x0000000074F1E000-memory.dmp
memory/2140-12-0x0000000000430000-0x0000000000470000-memory.dmp
memory/2140-14-0x0000000074830000-0x0000000074F1E000-memory.dmp
memory/2140-15-0x0000000000430000-0x0000000000470000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-20 19:26
Reported
2024-01-20 19:29
Platform
win10v2004-20231215-en
Max time kernel
155s
Max time network
158s
Command Line
Signatures
njRAT/Bladabindi
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.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:\Windows\Dllhost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe | C:\Windows\Dllhost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Dllhost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." | C:\Windows\Dllhost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." | C:\Windows\Dllhost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Dllhost.exe | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | N/A |
| File opened for modification | C:\Windows\Dllhost.exe | C:\Windows\Dllhost.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | N/A |
| N/A | N/A | C:\Windows\Dllhost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: 33 | N/A | C:\Windows\Dllhost.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\Dllhost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1520 wrote to memory of 1840 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
| PID 1520 wrote to memory of 1840 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
| PID 1520 wrote to memory of 1840 | N/A | C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe | C:\Windows\Dllhost.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe
"C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe"
C:\Windows\Dllhost.exe
"C:\Windows\Dllhost.exe"
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 27.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| RU | 178.187.164.4:7777 | tcp | |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.171.91.138.in-addr.arpa | udp |
| RU | 178.187.164.4:7777 | tcp | |
| US | 8.8.8.8:53 | 172.178.17.96.in-addr.arpa | udp |
| RU | 178.187.164.4:7777 | tcp | |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| RU | 178.187.164.4:7777 | tcp | |
| US | 8.8.8.8:53 | 178.113.50.184.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| RU | 178.187.164.4:7777 | tcp | |
| RU | 178.187.164.4:7777 | tcp | |
| US | 8.8.8.8:53 | 252.15.104.51.in-addr.arpa | udp |
Files
memory/1520-1-0x0000000074A30000-0x00000000751E0000-memory.dmp
memory/1520-0-0x0000000000A30000-0x0000000000A42000-memory.dmp
memory/1520-2-0x0000000005470000-0x000000000550C000-memory.dmp
memory/1520-3-0x0000000005460000-0x0000000005470000-memory.dmp
memory/1520-4-0x0000000005CC0000-0x0000000006264000-memory.dmp
memory/1520-5-0x0000000005810000-0x00000000058A2000-memory.dmp
C:\Windows\Dllhost.exe
| MD5 | 1722c8695ca31163d93c6cf56f0c8530 |
| SHA1 | aa81bc701216ec1441565275c0bfab69376757a6 |
| SHA256 | ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e |
| SHA512 | 50830a24bb50df4db8f78522f9b4f65f689fc75d6503c1b4c8a4bb7a662e340adf3f80211523d90a4b838c1fc00d1dc01b1711ab954670b2f0ff609e9d926a1d |
memory/1520-15-0x0000000074A30000-0x00000000751E0000-memory.dmp
memory/1840-16-0x0000000074A30000-0x00000000751E0000-memory.dmp
memory/1840-17-0x00000000050A0000-0x00000000050B0000-memory.dmp
memory/1840-19-0x0000000005250000-0x000000000525A000-memory.dmp
memory/1840-20-0x0000000074A30000-0x00000000751E0000-memory.dmp