njrat | 430d6a10f2a37a3a8957e5fabfda4f3c7fa9af76bc4b2c020638f023e06f0267

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 16:19

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General

Target

Server.exe
Size

93KB
MD5

77e8ae03f54ed1ce413314dbb8e00435
SHA1

398ce9204237c30280dce2f3d6cfed34946383c0
SHA256

430d6a10f2a37a3a8957e5fabfda4f3c7fa9af76bc4b2c020638f023e06f0267
SHA512

6a679cd51e75ed9374cd17da763f180fd370e7d86fa88475a75eb1b07bd4f0e4f72b4fdf006345af3c0086a1978a358ade19a3ca422d892e41c3d0a47032b159
SSDEEP

768:gY3wI7yZnDQMMpAZrGSt6udttXy4sahkGJiXxrjEtCdnl2pi1Rz4Rk3wsGdpTgS7:II+ZD3rGWNd7dhkhjEwzGi1dDoDTgS

Score

10^/10

njrat noip discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

noip

hakim32.ddns.net:2000

mahmoudabu9pos.ddns.net:27005

Mutex

fdce5dfdbb5ec4d4d26d1b02578ff07b

Attributes

reg_key
fdce5dfdbb5ec4d4d26d1b02578ff07b
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 3 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2804	netsh.exe
3012	netsh.exe
2708	netsh.exe

Drops startup file 4 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fdce5dfdbb5ec4d4d26d1b02578ff07bWindows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fdce5dfdbb5ec4d4d26d1b02578ff07bWindows Update.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
1436	server.exe

Loads dropped DLL 2 IoCs

pid	Process
1556	Server.exe
1556	Server.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Explower.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\Explower.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 9 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 queried	\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
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
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
Key value enumerated	\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 5 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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe
1436	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1436	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe
Token: 33	1436	server.exe
Token: SeIncBasePriorityPrivilege	1436	server.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 1436	1556	Server.exe	30
PID 1556 wrote to memory of 1436	1556	Server.exe	30
PID 1556 wrote to memory of 1436	1556	Server.exe	30
PID 1556 wrote to memory of 1436	1556	Server.exe	30
PID 1436 wrote to memory of 2804	1436	server.exe	31
PID 1436 wrote to memory of 2804	1436	server.exe	31
PID 1436 wrote to memory of 2804	1436	server.exe	31
PID 1436 wrote to memory of 2804	1436	server.exe	31
PID 1436 wrote to memory of 3012	1436	server.exe	33
PID 1436 wrote to memory of 3012	1436	server.exe	33
PID 1436 wrote to memory of 3012	1436	server.exe	33
PID 1436 wrote to memory of 3012	1436	server.exe	33
PID 1436 wrote to memory of 2708	1436	server.exe	34
PID 1436 wrote to memory of 2708	1436	server.exe	34
PID 1436 wrote to memory of 2708	1436	server.exe	34
PID 1436 wrote to memory of 2708	1436	server.exe	34

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Users\Admin\AppData\Roaming\server.exe
  "C:\Users\Admin\AppData\Roaming\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1436
- - 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:2804
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe"
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3012
- - 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:2708

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

C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
bbcd2be775370c1e106e66d077a93f3b

SHA1
a44b6a98f30e3275fc304bc3b29e0eab8ae47f20

SHA256
a7aa76f137ba550c381cfb8e5195a01963ae49db167e1cd1e0a8b902ed81eda1

SHA512
bb6e0d1f24253a9525fd538debf8ca68eb7078cb8539140c184331a854ecdea192fbcc314c4154a0a474c9aec41a79efeb8150922454c3c9e71eeb5297ae2f72

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

Filesize
93KB

MD5
77e8ae03f54ed1ce413314dbb8e00435

SHA1
398ce9204237c30280dce2f3d6cfed34946383c0

SHA256
430d6a10f2a37a3a8957e5fabfda4f3c7fa9af76bc4b2c020638f023e06f0267

SHA512
6a679cd51e75ed9374cd17da763f180fd370e7d86fa88475a75eb1b07bd4f0e4f72b4fdf006345af3c0086a1978a358ade19a3ca422d892e41c3d0a47032b159

Download Submit
memory/1436-16-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1436-14-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1436-27-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1436-26-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1436-28-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1556-0-0x0000000074531000-0x0000000074532000-memory.dmp

Filesize
4KB

Download
memory/1556-1-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1556-2-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1556-15-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download