njrat | 6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab

General

Target

6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe
Size

37KB
MD5

0a47d55f7619dc132fe38e03be2f91ca
SHA1

1038cb66aae449f5b0f9731bb0deac6f3cc3d864
SHA256

6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab
SHA512

3b97c0f59d4ac6d7e840ccb106e911eb28734c558f8b0f745632c5cc1aeaf14a3892daa90981c7f66da0e13305fdbd53ef72595c53c5a18c5af7a289a86446f8
SSDEEP

384:k0aIiudjtD+P3V+y0b3+LCtf1QseiXFrAF+rMRTyN/0L+EcoinblneHQM3epzX4K:TFmV10b3+LCtCViVrM+rMRa8NuWut

Score

10^/10

njrat man discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Man

C2

0.tcp.eu.ngrok.io:10698

Mutex

630e28d3c8152ab68e951a8968693173

Attributes

reg_key
630e28d3c8152ab68e951a8968693173
splitter
|'|'|

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
2808	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	server.exe

Loads dropped DLL 1 IoCs

pid	Process
1988	6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
41	0.tcp.eu.ngrok.io
2	0.tcp.eu.ngrok.io
21	0.tcp.eu.ngrok.io

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

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 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	6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe
Token: 33	2260	server.exe
Token: SeIncBasePriorityPrivilege	2260	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 2260	1988	6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe	31
PID 1988 wrote to memory of 2260	1988	6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe	31
PID 1988 wrote to memory of 2260	1988	6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe	31
PID 1988 wrote to memory of 2260	1988	6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe	31
PID 2260 wrote to memory of 2808	2260	server.exe	32
PID 2260 wrote to memory of 2808	2260	server.exe	32
PID 2260 wrote to memory of 2808	2260	server.exe	32
PID 2260 wrote to memory of 2808	2260	server.exe	32

C:\Users\Admin\AppData\Local\Temp\6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe
"C:\Users\Admin\AppData\Local\Temp\6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Roaming\server.exe
  "C:\Users\Admin\AppData\Roaming\server.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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

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

1

T1562.004

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\server.exe

Filesize
37KB

MD5
0a47d55f7619dc132fe38e03be2f91ca

SHA1
1038cb66aae449f5b0f9731bb0deac6f3cc3d864

SHA256
6f31ca947c494c4413151a81a41e936ab7edd17a6a15f08682e5595cfd90afab

SHA512
3b97c0f59d4ac6d7e840ccb106e911eb28734c558f8b0f745632c5cc1aeaf14a3892daa90981c7f66da0e13305fdbd53ef72595c53c5a18c5af7a289a86446f8

Download Submit
memory/1988-0-0x0000000074531000-0x0000000074532000-memory.dmp

Filesize
4KB

Download
memory/1988-1-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1988-2-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1988-12-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2260-11-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2260-10-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2260-13-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/2260-14-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads