njrat | c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31f

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-10-2024 08:23

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General

Target

c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe
Size

37KB
MD5

0e78a49bf12394a06cf511f72d76c040
SHA1

6bac7cc2f03a22654151501a02570b41a9db4365
SHA256

c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31f
SHA512

f5a5797326eae328f3876889c1e4f07d7fb853df6dd1a06545696c2fcc59ae1a9fc1b28f1c4a3b1f592016c31ac20c0704531d8d68b8208040f2b1aef1c0e962
SSDEEP

384:ckaIiudjtD+P3V+y0b3+LCtf1QseiXFrAF+rMRTyN/0L+EcoinblneHQM3epzXV2:fFmV10b3+LCtCViVrM+rMRa8Nuzyt

Score

10^/10

njrat man discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Man

0.tcp.eu.ngrok.io:11347

Mutex

658861a468f9c892637f296b375f895a

Attributes

reg_key
658861a468f9c892637f296b375f895a
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
2872	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	server.exe

Loads dropped DLL 1 IoCs

pid	Process
2124	c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe

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

Web Service

T1102

flow	ioc
2	0.tcp.eu.ngrok.io
7	0.tcp.eu.ngrok.io
27	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	c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe
2824	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2824	server.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe
Token: 33	2824	server.exe
Token: SeIncBasePriorityPrivilege	2824	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2824	2124	c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe	30
PID 2124 wrote to memory of 2824	2124	c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe	30
PID 2124 wrote to memory of 2824	2124	c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe	30
PID 2124 wrote to memory of 2824	2124	c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe	30
PID 2824 wrote to memory of 2872	2824	server.exe	31
PID 2824 wrote to memory of 2872	2824	server.exe	31
PID 2824 wrote to memory of 2872	2824	server.exe	31
PID 2824 wrote to memory of 2872	2824	server.exe	31

C:\Users\Admin\AppData\Local\Temp\c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe
"C:\Users\Admin\AppData\Local\Temp\c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31fN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- 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 behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2824
- - 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:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

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

Filesize
37KB

MD5
0e78a49bf12394a06cf511f72d76c040

SHA1
6bac7cc2f03a22654151501a02570b41a9db4365

SHA256
c8d3c048a92b468514343ac258e5c8047ea66ef3b54e4f4200f7243de06ae31f

SHA512
f5a5797326eae328f3876889c1e4f07d7fb853df6dd1a06545696c2fcc59ae1a9fc1b28f1c4a3b1f592016c31ac20c0704531d8d68b8208040f2b1aef1c0e962

Download Submit
memory/2124-0-0x0000000074F51000-0x0000000074F52000-memory.dmp

Filesize
4KB

Download
memory/2124-1-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/2124-2-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/2124-10-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-11-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-12-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-13-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download