njrat | 3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717

General

Target

3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe
Size

23KB
MD5

e31c0b9b4e622689403675985761b9c0
SHA1

56931405ba252d390706d6d09687edfd8e0c8001
SHA256

3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717
SHA512

e39e066f6934dc20e40c235438d247a768b02d35378bf936fce4f9c05ea831bbc082445cc382ce3e2af9fdec8965d86519f2c4947822059cd20856f54261adce
SSDEEP

384:8oWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIn:r7O89p2rRpcnud

Score

10^/10

njrat hacked discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

10.10.1.11:5552

Mutex

7657c14284185fbd3fb108b43c7467ba

Attributes

reg_key
7657c14284185fbd3fb108b43c7467ba
splitter
|'|'|

Signatures

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
2292	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2544	server.exe

Loads dropped DLL 1 IoCs

pid	Process
2568	3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.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 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	3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe
Token: 33	2544	server.exe
Token: SeIncBasePriorityPrivilege	2544	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 2544	2568	3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe	31
PID 2568 wrote to memory of 2544	2568	3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe	31
PID 2568 wrote to memory of 2544	2568	3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe	31
PID 2568 wrote to memory of 2544	2568	3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe	31
PID 2544 wrote to memory of 2292	2544	server.exe	32
PID 2544 wrote to memory of 2292	2544	server.exe	32
PID 2544 wrote to memory of 2292	2544	server.exe	32
PID 2544 wrote to memory of 2292	2544	server.exe	32

C:\Users\Admin\AppData\Local\Temp\3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe
"C:\Users\Admin\AppData\Local\Temp\3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
23KB

MD5
e31c0b9b4e622689403675985761b9c0

SHA1
56931405ba252d390706d6d09687edfd8e0c8001

SHA256
3f8b1f4d1c42bcaed4a709ef637e7f6853c6715dfb0d12b484dec5fdee2c8717

SHA512
e39e066f6934dc20e40c235438d247a768b02d35378bf936fce4f9c05ea831bbc082445cc382ce3e2af9fdec8965d86519f2c4947822059cd20856f54261adce

Download Submit
memory/2544-11-0x0000000074920000-0x0000000074ECB000-memory.dmp

Filesize
5.7MB

Download
memory/2544-10-0x0000000074920000-0x0000000074ECB000-memory.dmp

Filesize
5.7MB

Download
memory/2544-13-0x0000000074920000-0x0000000074ECB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-0-0x0000000074921000-0x0000000074922000-memory.dmp

Filesize
4KB

Download
memory/2568-1-0x0000000074920000-0x0000000074ECB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-2-0x0000000074920000-0x0000000074ECB000-memory.dmp

Filesize
5.7MB

Download
memory/2568-12-0x0000000074920000-0x0000000074ECB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads