njrat | 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708

Analysis

max time kernel
144s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04/12/2024, 06:07

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General

Target

7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
Size

1.2MB
MD5

0892da2c8fbf043ae276100f9c7ec8ba
SHA1

7237c52c96efcfa0105f0cdaf37245f0b29685de
SHA256

7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708
SHA512

c547262992a16e873c39997f6e892d0959474efc78d99330160fa82621a732f297100fe73ecb3d520e4053087bbd9428f11be695d8f83c02a08be3dd010bc77e
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95G:Jh+ZkldoPK8YaW7CaZ7IHG

Score

10^/10

njrat redlanhopto discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

redlanhopto

redlan.hopto.org:5553

Mutex

d25d360449d7bab3069e1b77b3a914a3

Attributes

reg_key
d25d360449d7bab3069e1b77b3a914a3
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
2652	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
712	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0036000000015d48-15.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2468 set thread context of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 712 set thread context of 1504	712	data.exe	39

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 7 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	data.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2448	schtasks.exe
1508	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
712	data.exe
712	data.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe
Token: 33	2960	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2960	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
712	data.exe
712	data.exe
712	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
712	data.exe
712	data.exe
712	data.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2468 wrote to memory of 2960	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	30
PID 2960 wrote to memory of 2652	2960	RegAsm.exe	32
PID 2960 wrote to memory of 2652	2960	RegAsm.exe	32
PID 2960 wrote to memory of 2652	2960	RegAsm.exe	32
PID 2960 wrote to memory of 2652	2960	RegAsm.exe	32
PID 2468 wrote to memory of 2448	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	35
PID 2468 wrote to memory of 2448	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	35
PID 2468 wrote to memory of 2448	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	35
PID 2468 wrote to memory of 2448	2468	7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe	35
PID 2032 wrote to memory of 712	2032	taskeng.exe	38
PID 2032 wrote to memory of 712	2032	taskeng.exe	38
PID 2032 wrote to memory of 712	2032	taskeng.exe	38
PID 2032 wrote to memory of 712	2032	taskeng.exe	38
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1504	712	data.exe	39
PID 712 wrote to memory of 1508	712	data.exe	40
PID 712 wrote to memory of 1508	712	data.exe	40
PID 712 wrote to memory of 1508	712	data.exe	40
PID 712 wrote to memory of 1508	712	data.exe	40

C:\Users\Admin\AppData\Local\Temp\7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
"C:\Users\Admin\AppData\Local\Temp\7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2960
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" "RegAsm.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2652
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2448

C:\Windows\system32\taskeng.exe
taskeng.exe {236E3398-68D0-4E09-92FE-6442191E8A5A} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:712
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1504
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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\chkdsk\data.exe

Filesize
1.2MB

MD5
b1cc65705a46a069a40af6979ef1dad8

SHA1
fe13287e16ff07bdbf80244e8e7eb948658fe3bf

SHA256
c9b36c8f61f8ee135b6dcfa83d65b47b588f3460f65bdde655ac64e332d9ef5f

SHA512
15d03d4528db3ea248399b66f5325ea29652d5f3ae5cdc760de3c4e5836d5b9598fcd3238375cec51d54bb574ea584187d6c11a34cccc27a03081064b43a5502

Download Submit
memory/2468-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2960-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2960-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2960-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2960-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2960-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2960-10-0x0000000073CC2000-0x0000000073CC4000-memory.dmp

Filesize
8KB

Download
memory/2960-11-0x0000000073CC2000-0x0000000073CC4000-memory.dmp

Filesize
8KB

Download