njrat | a7c87bea2e797dfe4af4a97a0e23aa3625e24f58d5e0b9067558fb8dab6f42cd

General

Target

sample.exe
Size

29KB
MD5

e364b1cc1166cd2b1abd2ddc45350238
SHA1

a06d63e608a73acda0d2ac11ff8151d4b6293454
SHA256

9360b296799be39b9e497fe82463f5f593a3bbcde957a3d673a52f3b5516ef6f
SHA512

2b4e5bf0b0ee856c758540fe64e11e8999d777e266e9d67513b53ff170c6927294e8e7eda7b3d2844d52ad19f8fedeec52fcaad7cdf2b85ace9e68066793247d
SSDEEP

384:EmCftl7ndJoc8e9v55Do7mmmqDspHe4qGBsbh0w4wlAokw9OhgOL1vYRGOZzPZYU:GD7zoc86xi74q8HeoBKh0p29SgR5D

Score

10^/10

njrat hacked by fares discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed By Fares

C2

yoryounes.no-ip.biz:1177

Mutex

785d05353c980cbe0ee2249e87829808

Attributes

reg_key
785d05353c980cbe0ee2249e87829808
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
2084	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2548	winlogon.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\785d05353c980cbe0ee2249e87829808 = "\"C:\\Windows\\winlogon.exe\" .."	winlogon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\785d05353c980cbe0ee2249e87829808 = "\"C:\\Windows\\winlogon.exe\" .."	winlogon.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\winlogon.exe	sample.exe
File opened for modification	C:\Windows\winlogon.exe	sample.exe
File created	C:\Windows\winlogon.exe.tmp	winlogon.exe
File opened for modification	C:\Windows\winlogon.exe.tmp	winlogon.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	sample.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlogon.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe
2548	winlogon.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	winlogon.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2548	2580	sample.exe	30
PID 2580 wrote to memory of 2548	2580	sample.exe	30
PID 2580 wrote to memory of 2548	2580	sample.exe	30
PID 2580 wrote to memory of 2548	2580	sample.exe	30
PID 2548 wrote to memory of 2084	2548	winlogon.exe	31
PID 2548 wrote to memory of 2084	2548	winlogon.exe	31
PID 2548 wrote to memory of 2084	2548	winlogon.exe	31
PID 2548 wrote to memory of 2084	2548	winlogon.exe	31

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580
- C:\Windows\winlogon.exe
  "C:\Windows\winlogon.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\winlogon.exe" "winlogon.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2084

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

C:\Windows\winlogon.exe

Filesize
29KB

MD5
e364b1cc1166cd2b1abd2ddc45350238

SHA1
a06d63e608a73acda0d2ac11ff8151d4b6293454

SHA256
9360b296799be39b9e497fe82463f5f593a3bbcde957a3d673a52f3b5516ef6f

SHA512
2b4e5bf0b0ee856c758540fe64e11e8999d777e266e9d67513b53ff170c6927294e8e7eda7b3d2844d52ad19f8fedeec52fcaad7cdf2b85ace9e68066793247d

Download Submit
memory/2548-11-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2548-12-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2548-10-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2548-13-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2580-0-0x0000000074161000-0x0000000074162000-memory.dmp

Filesize
4KB

Download
memory/2580-1-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2580-3-0x0000000074160000-0x000000007470B000-memory.dmp

Filesize
5.7MB

Download
memory/2580-9-0x0000000074160000-0x000000007470B000-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