njrat | 8280702dae2acdb7ffe64077ff710b22474109e5adbd0b600f333f3902fd7ff9

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/12/2024, 14:09

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General

Target

Nursultan.exe
Size

93KB
MD5

73c7a3c03ab43cd390c64e04374c43d9
SHA1

661c1d5642647432a69c1471803a007592b16543
SHA256

8280702dae2acdb7ffe64077ff710b22474109e5adbd0b600f333f3902fd7ff9
SHA512

2cd13500928ce9179b5c8ddec0c5e07713754e8e8665f973e4006a374e210aa30c5bb5763807dc91d22cf89952f4a7ca6eda992ac3bfae684b3cf7754e087b0c
SSDEEP

1536:axGq+8Tnc7iXQj5piFejEwzGi1dDIDngS:axXTnkiXE4Vi1dOg

Score

10^/10

njrat hacked discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

hakim32.ddns.net:2000

127.0.0.1:5552

Mutex

20b7dddd28527b3a08b870ea6749495d

Attributes

reg_key
20b7dddd28527b3a08b870ea6749495d
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
320	netsh.exe

Drops startup file 4 IoCs

description	ioc	Process
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\20b7dddd28527b3a08b870ea6749495dWindows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\20b7dddd28527b3a08b870ea6749495dWindows Update.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2064	server.exe

Loads dropped DLL 2 IoCs

pid	Process
1628	Nursultan.exe
1628	Nursultan.exe

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	server.exe
File opened for modification	C:\autorun.inf	server.exe
File created	F:\autorun.inf	server.exe
File opened for modification	F:\autorun.inf	server.exe

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 queried	\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 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	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nursultan.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe
2064	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2064	server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe
Token: 33	2064	server.exe
Token: SeIncBasePriorityPrivilege	2064	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2064	1628	Nursultan.exe	30
PID 1628 wrote to memory of 2064	1628	Nursultan.exe	30
PID 1628 wrote to memory of 2064	1628	Nursultan.exe	30
PID 1628 wrote to memory of 2064	1628	Nursultan.exe	30
PID 2064 wrote to memory of 320	2064	server.exe	31
PID 2064 wrote to memory of 320	2064	server.exe	31
PID 2064 wrote to memory of 320	2064	server.exe	31
PID 2064 wrote to memory of 320	2064	server.exe	31

C:\Users\Admin\AppData\Local\Temp\Nursultan.exe
"C:\Users\Admin\AppData\Local\Temp\Nursultan.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops autorun.inf file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2064
- - 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:320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

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

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
53ce6d1ae8885b5d12e654469f456c83

SHA1
9d8b30c523ddef4d24134072b27716bec7d94d6f

SHA256
d7ebf92ad6e3bc44fbc3cfbb234ef4afafd7ea339f712229641a2849b6f87ce2

SHA512
c15df9281e9ccbb8d30e24e751b77a030e734f8cda4bd9482d3ca02f6b23e463a8e90ddd78a582ca059e57b8d0492c22583d792bc7368094ffc06e12cd145d9d

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

Filesize
93KB

MD5
73c7a3c03ab43cd390c64e04374c43d9

SHA1
661c1d5642647432a69c1471803a007592b16543

SHA256
8280702dae2acdb7ffe64077ff710b22474109e5adbd0b600f333f3902fd7ff9

SHA512
2cd13500928ce9179b5c8ddec0c5e07713754e8e8665f973e4006a374e210aa30c5bb5763807dc91d22cf89952f4a7ca6eda992ac3bfae684b3cf7754e087b0c

Download Submit
memory/1628-0-0x0000000074051000-0x0000000074052000-memory.dmp

Filesize
4KB

Download
memory/1628-1-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/1628-2-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/1628-14-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/2064-15-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/2064-16-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/2064-17-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/2064-31-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download
memory/2064-32-0x0000000074050000-0x00000000745FB000-memory.dmp

Filesize
5.7MB

Download