njrat | 040473f2b73f8947306d2fa9d99c441447026a56ddcdce11720c17be62e000a8

Analysis

max time kernel
149s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 11:04

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General

Target

Client.exe
Size

31KB
MD5

eb6401a1d957dce189e9a1ad06f41172
SHA1

ed58fef2021887c89e2c183d648325e5103eb2dd
SHA256

040473f2b73f8947306d2fa9d99c441447026a56ddcdce11720c17be62e000a8
SHA512

9417fb14d0a8eee31fa6d38df314b9842b01365b0e04885f770da02552125e006cdea6de2ae779db616c0247c41406b8c4c00fca8eb6b646c816e50c35230af6
SSDEEP

768:55JEpBZhjzOzx5+R4s/Hu56HdAbiTinvaTQmIDUu0tiEUj:6D6uukAbiT6oQVkwj

Score

10^/10

njrat mybot discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBot

127.0.0.1:6522

Mutex

ba8bb006c6a684a6e6ce01b11f9779df

Attributes

reg_key
ba8bb006c6a684a6e6ce01b11f9779df
splitter
Y262SUCZ4UJJ

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
2736	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2824	WindowsServices.exe

Loads dropped DLL 1 IoCs

pid	Process
2124	Client.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

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	Client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WindowsServices.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

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

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2824	2124	Client.exe	30
PID 2124 wrote to memory of 2824	2124	Client.exe	30
PID 2124 wrote to memory of 2824	2124	Client.exe	30
PID 2124 wrote to memory of 2824	2124	Client.exe	30
PID 2824 wrote to memory of 2736	2824	WindowsServices.exe	31
PID 2824 wrote to memory of 2736	2824	WindowsServices.exe	31
PID 2824 wrote to memory of 2736	2824	WindowsServices.exe	31
PID 2824 wrote to memory of 2736	2824	WindowsServices.exe	31

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe
  "C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\WindowsServices.exe" "WindowsServices.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2736

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

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\WindowsServices.exe

Filesize
31KB

MD5
eb6401a1d957dce189e9a1ad06f41172

SHA1
ed58fef2021887c89e2c183d648325e5103eb2dd

SHA256
040473f2b73f8947306d2fa9d99c441447026a56ddcdce11720c17be62e000a8

SHA512
9417fb14d0a8eee31fa6d38df314b9842b01365b0e04885f770da02552125e006cdea6de2ae779db616c0247c41406b8c4c00fca8eb6b646c816e50c35230af6

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/2124-11-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-10-0x0000000074F50000-0x00000000754FB000-memory.dmp

Filesize
5.7MB

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