njrat | bb8065309db684a81570b42a0bb4b0b160fea37eb4117d9296fccb678ea5ec2e

General

Target

system.exe
Size

23KB
MD5

e170c80d53dfec6413f3bb13cf2505b8
SHA1

32d0c64ac85166bf71a9f24ea091f470c5b471b9
SHA256

bb8065309db684a81570b42a0bb4b0b160fea37eb4117d9296fccb678ea5ec2e
SHA512

2926bb37d421cde19653b8b4f0e78469fc415f2d4f8b0b3072728e1a1b70d62d88dec1a2b7affa413631ae0c242ed1e4fe0ca137f5cdf0abee5fd7a07525541c
SSDEEP

384:N8aLWS0dABLYVq6RxP8MDFF09vK563gRMmJKUv0mRvR6JZlbw8hqIusZzZ0U:uXcwt3tRpcnuq

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
4260	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\09a96e8bdcc22f9e796248ee9591454a.exe	system.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\09a96e8bdcc22f9e796248ee9591454a.exe	system.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\09a96e8bdcc22f9e796248ee9591454a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\09a96e8bdcc22f9e796248ee9591454a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe\" .."	system.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	system.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe
Token: 33	4440	system.exe
Token: SeIncBasePriorityPrivilege	4440	system.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 4260	4440	system.exe	86
PID 4440 wrote to memory of 4260	4440	system.exe	86
PID 4440 wrote to memory of 4260	4440	system.exe	86

C:\Users\Admin\AppData\Local\Temp\system.exe
"C:\Users\Admin\AppData\Local\Temp\system.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:4440
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\system.exe" "system.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:4260

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/4440-0-0x0000000075502000-0x0000000075503000-memory.dmp

Filesize
4KB

Download
memory/4440-1-0x0000000075500000-0x0000000075AB1000-memory.dmp

Filesize
5.7MB

Download
memory/4440-2-0x0000000075500000-0x0000000075AB1000-memory.dmp

Filesize
5.7MB

Download
memory/4440-4-0x0000000075502000-0x0000000075503000-memory.dmp

Filesize
4KB

Download
memory/4440-5-0x0000000075500000-0x0000000075AB1000-memory.dmp

Filesize
5.7MB

Download
memory/4440-6-0x0000000075500000-0x0000000075AB1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads