njrat | 1048b9978e4e8d928c8f5c057c0c1ac6213b4f456b6cf83558e213742f780bea

General

Target

Server.exe
Size

23KB
MD5

1011ca14bd55e56a16a393744aefcc47
SHA1

912b56d8a53e77db250a904c68afb00f39a98429
SHA256

1048b9978e4e8d928c8f5c057c0c1ac6213b4f456b6cf83558e213742f780bea
SHA512

e093b3d79e56691637bf00cf4d1610a3891b7f9501d9874a3ed5fd8f2056a758f6e3270e9435cbe02cf5c2cb37bc07436959d402f76ef11173f93545229d73b3
SSDEEP

384:FweXCQIreJig/8Z7SS1fEBpng6tgL2IBPZVmRvR6JZlbw8hqIusZzZVT:aLq411eRpcnuq

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
5100	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b86f87cbaaa618da21a2bbbc7c7dfc60.exe	Server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b86f87cbaaa618da21a2bbbc7c7dfc60.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b86f87cbaaa618da21a2bbbc7c7dfc60 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Server.exe\" .."	Server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b86f87cbaaa618da21a2bbbc7c7dfc60 = "\"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

System Location Discovery: System Language Discovery 1 TTPs 2 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

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe
Token: 33	2436	Server.exe
Token: SeIncBasePriorityPrivilege	2436	Server.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2436 wrote to memory of 5100	2436	Server.exe	84
PID 2436 wrote to memory of 5100	2436	Server.exe	84
PID 2436 wrote to memory of 5100	2436	Server.exe	84

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2436
- 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:5100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2436-0-0x00000000750F2000-0x00000000750F3000-memory.dmp

Filesize
4KB

Download
memory/2436-1-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/2436-2-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/2436-4-0x00000000750F2000-0x00000000750F3000-memory.dmp

Filesize
4KB

Download
memory/2436-5-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download
memory/2436-6-0x00000000750F0000-0x00000000756A1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads