njrat | 96e30854291106be006144eedc27a30465aecc71b440a9c066a4b0703cf15f80

General

Target
Server.exe
Size 23KB
Sample261001-2vbgmatcjg
SHA256 96e30854291106be006144eedc27a30465aecc71b440a9c066a4b0703cf15f80
MD5 9e6caa79b7fe99563e48021b8d37c87e
SHA1 645eb41b8278f377ad69fbdf533f308a08d005ba
SHA512 f5fb0edec78bcd8d5fa521141daddd193e76c1f980d6a056287060fca4fb84a10aa3c0a15938f0822723697c1cdca7deb4abf0bf5e99fcd0a8bb893583aeb57d
SSDEEP 384:8zve0MWfSJUQb6IRGSqCYnxTL0+86pg/i8BD9BmRvR6JZlbw8hqIusZzZXc:2RmmGtqQ+xRpcnuv
TLSH
T132B22A4E3FA98956D4BC07748AA5965003B491830413EE2FCDC564CBAFB37D92D4CAF9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery njrat persistence privilege_escalation trojan

Malware Config

Signatures

Family: njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
700	netsh.exe

Creates a file in the Startup directory 1 TTPs 2 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a400dbd1c95fbfafc4f489d96913d089.exe	Server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a400dbd1c95fbfafc4f489d96913d089.exe	Server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2322150968-3922673059-3248713381-1000\Software\Microsoft\Windows\CurrentVersion\Run\a400dbd1c95fbfafc4f489d96913d089 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Server.exe\" .."	Server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a400dbd1c95fbfafc4f489d96913d089 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Server.exe\" .."	Server.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Server.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Server.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe
Token: 33	3844	Server.exe
Token: SeIncBasePriorityPrivilege	3844	Server.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 3844 wrote to memory of 700	3844	Server.exe	82

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Creates a file in the Startup directory
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3844
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:700

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe" ..
1⤵
- System Location Discovery: System Language Discovery
PID:1404