njrat | c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366

General

Target

c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
Size

23KB
MD5

ff2c4f921fab4f4900acb9c9fecb6ec0
SHA1

e385387ead5c0f7c626de00fb716dea1c6e8e9e3
SHA256

c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366
SHA512

5a34cf6ad696b41e8b0d3d2272c214673ed5ed1aa0c6560793bcb4a2cc6646c8d8d419a557a7a4a46e2f2447568110b3cd9aaa36737d6061e6653ebbeee38e8e
SSDEEP

384:kslUlEvOEJ8xWwYJOMiOBZEdj1567gtwi5HhbQmRvR6JZlbw8hqIusZzZif:teEvwIlLMRpcnuH

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

Processes:

netsh.exe

pid process

4684 netsh.exe

pid	process
4684	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid process

3584 server.exe

pid	process
3584	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

server.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7c2c57ac23031a96b734c5b4f1cc3f93 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7c2c57ac23031a96b734c5b4f1cc3f93 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Processes:

netsh.exe

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

Processes:

c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exeserver.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
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 27 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe
Token: 33	3584	server.exe
Token: SeIncBasePriorityPrivilege	3584	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exeserver.exe

description	pid	process	target process
PID 224 wrote to memory of 3584	224	c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe	server.exe
PID 224 wrote to memory of 3584	224	c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe	server.exe
PID 224 wrote to memory of 3584	224	c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe	server.exe
PID 3584 wrote to memory of 4684	3584	server.exe	netsh.exe
PID 3584 wrote to memory of 4684	3584	server.exe	netsh.exe
PID 3584 wrote to memory of 4684	3584	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
"C:\Users\Admin\AppData\Local\Temp\c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3584
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4684

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

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
ff2c4f921fab4f4900acb9c9fecb6ec0

SHA1
e385387ead5c0f7c626de00fb716dea1c6e8e9e3

SHA256
c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366

SHA512
5a34cf6ad696b41e8b0d3d2272c214673ed5ed1aa0c6560793bcb4a2cc6646c8d8d419a557a7a4a46e2f2447568110b3cd9aaa36737d6061e6653ebbeee38e8e

Download Submit
memory/224-0-0x0000000075562000-0x0000000075563000-memory.dmp

Filesize
4KB

Download
memory/224-1-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/224-2-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/224-13-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/3584-12-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/3584-14-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/3584-15-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads