njrat | d7c2bc3fe230c0e2cd2ab3f1f784d8127d808dd8b2c619fc835a2db3aeb65787

General

Target

Server.exe
Size

23KB
MD5

66d5cbbaff5b74e3f7003a530a89846f
SHA1

895dc8a5c6e45a252b03b5806f8a6e24dfca515a
SHA256

d7c2bc3fe230c0e2cd2ab3f1f784d8127d808dd8b2c619fc835a2db3aeb65787
SHA512

41d2bdbc2e8968fb683306ea75dfd9add1e0c848dd6481378b06f143989b9559443e9c87922ebfd21158444e1507b5cc3fa3a5c36411b34f4c511c07fb7fc766
SSDEEP

384:20jeCIYTNQZUuQnJXJeCXlwhPQ6VgDOwBHhdmRvR6JZlbw8hqIusZzZMh:x3jNAU/ZVX6Rpcnu/

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
2968	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f08a00efc4f4aa02755de8472666c19b.exe	Server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f08a00efc4f4aa02755de8472666c19b.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\f08a00efc4f4aa02755de8472666c19b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Server.exe\" .."	Server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\f08a00efc4f4aa02755de8472666c19b = "\"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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe
Token: 33	964	Server.exe
Token: SeIncBasePriorityPrivilege	964	Server.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 2968	964	Server.exe	84
PID 964 wrote to memory of 2968	964	Server.exe	84
PID 964 wrote to memory of 2968	964	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:964
- 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:2968

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/964-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/964-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/964-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/964-4-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/964-5-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/964-6-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads