njrat | 2455874f6a28b18906b92b5ebfbc233062cc1c1cd50b2519640c3baa2ffca7f6

Analysis

max time kernel
149s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-10-2024 07:26

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General

Target

4225674c595b9ebd56b40e02b56fa4bc.exe
Size

31KB
MD5

4225674c595b9ebd56b40e02b56fa4bc
SHA1

2d61675ed36658d37795ea2572b31df6b75c53c4
SHA256

2455874f6a28b18906b92b5ebfbc233062cc1c1cd50b2519640c3baa2ffca7f6
SHA512

777ac78dbba50f1735c53b744645766966490a59c69763c9607961881f18052a00bface987ce9f69a747d2d2e9f2ea56b48f68e36ce43d13e291753598c679a6
SSDEEP

768:ZlB4IZBDTuzxZ+KKczDNpHvhR/QmIDUu0tiLUj:6c6lhjQVkRj

Score

10^/10

njrat mybot discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBot

45.152.161.204:6522

Mutex

3a242e02f9e01cc69f94bf51247fa2cb

Attributes

reg_key
3a242e02f9e01cc69f94bf51247fa2cb
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

Processes:

netsh.exe

pid	Process
2440	netsh.exe

Drops startup file 2 IoCs

Processes:

WindowsServices.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3a242e02f9e01cc69f94bf51247fa2cb.exe	WindowsServices.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3a242e02f9e01cc69f94bf51247fa2cb.exe	WindowsServices.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsServices.exe

pid	Process
2084	WindowsServices.exe

Loads dropped DLL 1 IoCs

Processes:

4225674c595b9ebd56b40e02b56fa4bc.exe

pid	Process
876	4225674c595b9ebd56b40e02b56fa4bc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WindowsServices.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\3a242e02f9e01cc69f94bf51247fa2cb = "\"C:\\ProgramData\\WindowsServices.exe\" .."	WindowsServices.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\3a242e02f9e01cc69f94bf51247fa2cb = "\"C:\\ProgramData\\WindowsServices.exe\" .."	WindowsServices.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

Processes:

netsh.exe

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

Processes:

netsh.exe4225674c595b9ebd56b40e02b56fa4bc.exeWindowsServices.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4225674c595b9ebd56b40e02b56fa4bc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WindowsServices.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

WindowsServices.exe

description	pid	Process
Token: SeDebugPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe
Token: 33	2084	WindowsServices.exe
Token: SeIncBasePriorityPrivilege	2084	WindowsServices.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

4225674c595b9ebd56b40e02b56fa4bc.exeWindowsServices.exe

description	pid	Process	procid_target
PID 876 wrote to memory of 2084	876	4225674c595b9ebd56b40e02b56fa4bc.exe	30
PID 876 wrote to memory of 2084	876	4225674c595b9ebd56b40e02b56fa4bc.exe	30
PID 876 wrote to memory of 2084	876	4225674c595b9ebd56b40e02b56fa4bc.exe	30
PID 876 wrote to memory of 2084	876	4225674c595b9ebd56b40e02b56fa4bc.exe	30
PID 2084 wrote to memory of 2440	2084	WindowsServices.exe	32
PID 2084 wrote to memory of 2440	2084	WindowsServices.exe	32
PID 2084 wrote to memory of 2440	2084	WindowsServices.exe	32
PID 2084 wrote to memory of 2440	2084	WindowsServices.exe	32

C:\Users\Admin\AppData\Local\Temp\4225674c595b9ebd56b40e02b56fa4bc.exe
"C:\Users\Admin\AppData\Local\Temp\4225674c595b9ebd56b40e02b56fa4bc.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:876
- C:\ProgramData\WindowsServices.exe
  "C:\ProgramData\WindowsServices.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\WindowsServices.exe" "WindowsServices.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\ProgramData\WindowsServices.exe

Filesize
31KB

MD5
4225674c595b9ebd56b40e02b56fa4bc

SHA1
2d61675ed36658d37795ea2572b31df6b75c53c4

SHA256
2455874f6a28b18906b92b5ebfbc233062cc1c1cd50b2519640c3baa2ffca7f6

SHA512
777ac78dbba50f1735c53b744645766966490a59c69763c9607961881f18052a00bface987ce9f69a747d2d2e9f2ea56b48f68e36ce43d13e291753598c679a6

Download Submit
memory/876-0-0x0000000074F61000-0x0000000074F62000-memory.dmp

Filesize
4KB

Download
memory/876-1-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/876-2-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/876-10-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-11-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-13-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-12-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-15-0x0000000074F60000-0x000000007550B000-memory.dmp

Filesize
5.7MB

Download