njrat | 3825fe6fd9e8754b3d4a374b8c73884647c6898d5e1220a0fe89b1a3dc8e35c4

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/12/2024, 02:46

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General

Target

55e2016fcb659bdf0f46a24ef2876609.exe
Size

93KB
MD5

55e2016fcb659bdf0f46a24ef2876609
SHA1

5afb69f26ddf1884372643a2b00d16a481fc7c26
SHA256

3825fe6fd9e8754b3d4a374b8c73884647c6898d5e1220a0fe89b1a3dc8e35c4
SHA512

4de0fb035b904bd2557d48aacfea53346748e0dbda86b710ee86796c374c37fd35e50f4d8b05cd1c058f95665894629f8848f4bce45378c00ced771baaea3e46
SSDEEP

1536:jwWmC+xhUa9urgOB9RNvM4jEwzGi1dDID0gS:cWgUa9urgONdGi1dmt

Score

10^/10

njrat owned discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Owned

hakim32.ddns.net:2000

167.71.56.116:22342

Mutex

24983f03fb74576bbc5af6aa1085b23d

Attributes

reg_key
24983f03fb74576bbc5af6aa1085b23d
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
2868	netsh.exe
2852	netsh.exe
2796	netsh.exe

Drops startup file 6 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\24983f03fb74576bbc5af6aa1085b23dWindows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.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\24983f03fb74576bbc5af6aa1085b23dWindows Update.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2088	server.exe

Loads dropped DLL 2 IoCs

pid	Process
3012	55e2016fcb659bdf0f46a24ef2876609.exe
3012	55e2016fcb659bdf0f46a24ef2876609.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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Explower.exe	server.exe
File opened for modification	C:\Program Files (x86)\Explower.exe	server.exe

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 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 queried	\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
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	55e2016fcb659bdf0f46a24ef2876609.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
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe
2088	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2088	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe
Token: 33	2088	server.exe
Token: SeIncBasePriorityPrivilege	2088	server.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2088	3012	55e2016fcb659bdf0f46a24ef2876609.exe	30
PID 3012 wrote to memory of 2088	3012	55e2016fcb659bdf0f46a24ef2876609.exe	30
PID 3012 wrote to memory of 2088	3012	55e2016fcb659bdf0f46a24ef2876609.exe	30
PID 3012 wrote to memory of 2088	3012	55e2016fcb659bdf0f46a24ef2876609.exe	30
PID 2088 wrote to memory of 2868	2088	server.exe	31
PID 2088 wrote to memory of 2868	2088	server.exe	31
PID 2088 wrote to memory of 2868	2088	server.exe	31
PID 2088 wrote to memory of 2868	2088	server.exe	31
PID 2088 wrote to memory of 2852	2088	server.exe	33
PID 2088 wrote to memory of 2852	2088	server.exe	33
PID 2088 wrote to memory of 2852	2088	server.exe	33
PID 2088 wrote to memory of 2852	2088	server.exe	33
PID 2088 wrote to memory of 2796	2088	server.exe	34
PID 2088 wrote to memory of 2796	2088	server.exe	34
PID 2088 wrote to memory of 2796	2088	server.exe	34
PID 2088 wrote to memory of 2796	2088	server.exe	34

C:\Users\Admin\AppData\Local\Temp\55e2016fcb659bdf0f46a24ef2876609.exe
"C:\Users\Admin\AppData\Local\Temp\55e2016fcb659bdf0f46a24ef2876609.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2088
- - 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:2868
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2852
- - 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:2796

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 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
8fc22f973bec7f0525710dcf02f05edf

SHA1
418f88fe2c59f8d9579994aec4034d785e8ac00c

SHA256
ba0e21ceb11b1ec62709b0141373ce65de5a156b822c9b6d3c3f9ed9ab224a46

SHA512
ac280118b4b0ee9643ecc464bfc91682ccccd530efa81dcc3d9471044305d59de661f865560206f089822299cb431dbad9f81a16ad667251375746d406f2b44d

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

Filesize
93KB

MD5
55e2016fcb659bdf0f46a24ef2876609

SHA1
5afb69f26ddf1884372643a2b00d16a481fc7c26

SHA256
3825fe6fd9e8754b3d4a374b8c73884647c6898d5e1220a0fe89b1a3dc8e35c4

SHA512
4de0fb035b904bd2557d48aacfea53346748e0dbda86b710ee86796c374c37fd35e50f4d8b05cd1c058f95665894629f8848f4bce45378c00ced771baaea3e46

Download Submit
memory/2088-15-0x0000000074B50000-0x00000000750FB000-memory.dmp

Filesize
5.7MB

Download
memory/2088-16-0x0000000074B50000-0x00000000750FB000-memory.dmp

Filesize
5.7MB

Download
memory/2088-43-0x0000000074B50000-0x00000000750FB000-memory.dmp

Filesize
5.7MB

Download
memory/3012-0-0x0000000074B51000-0x0000000074B52000-memory.dmp

Filesize
4KB

Download
memory/3012-1-0x0000000074B50000-0x00000000750FB000-memory.dmp

Filesize
5.7MB

Download
memory/3012-2-0x0000000074B50000-0x00000000750FB000-memory.dmp

Filesize
5.7MB

Download
memory/3012-14-0x0000000074B50000-0x00000000750FB000-memory.dmp

Filesize
5.7MB

Download