njrat | d5fb76293655ab1fbc2f9cfb03b286adc2e428117a4f596e23548316746cb04b

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 10:03

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General

Target

maria.exe
Size

164KB
MD5

1636678632f7d7f3bd1965bfe1a51c08
SHA1

e57f920beaec6462178c0ec5e577d8a12b9251b6
SHA256

56cf1856341fb63bffc8571f5044e8ef535ea8cb3710003e1006962ed9c5202b
SHA512

3dbf54e12616ff750daaade42ba7af6ba86101d5280d052a73343f6d391bcd30cc0ebc56f99c065881b9886201073450d59fbcc211d2d323d1b0a126d4e2965e
SSDEEP

3072:JvNPKxdSvpuWtYjSO6Q6WLISwVkTpl653UhXidG0G:xNPKxduuGYjVd6WsSwVKW3UhyE0

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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
2896	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\54b3bd64a921ac17b700167e29dd1edf.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\54b3bd64a921ac17b700167e29dd1edf.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
988	server.exe

Loads dropped DLL 2 IoCs

pid	Process
2128	maria.exe
2128	maria.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\chrome = "C:\\Users\\Admin\\AppData\\Roaming\\google \\chrome.exe"	maria.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\54b3bd64a921ac17b700167e29dd1edf = "\"C:\\ProgramData\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\54b3bd64a921ac17b700167e29dd1edf = "\"C:\\ProgramData\\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	maria.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 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	maria.exe
Token: SeDebugPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe
Token: 33	988	server.exe
Token: SeIncBasePriorityPrivilege	988	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 988	2128	maria.exe	31
PID 2128 wrote to memory of 988	2128	maria.exe	31
PID 2128 wrote to memory of 988	2128	maria.exe	31
PID 2128 wrote to memory of 988	2128	maria.exe	31
PID 988 wrote to memory of 2896	988	server.exe	32
PID 988 wrote to memory of 2896	988	server.exe	32
PID 988 wrote to memory of 2896	988	server.exe	32
PID 988 wrote to memory of 2896	988	server.exe	32

C:\Users\Admin\AppData\Local\Temp\maria.exe
"C:\Users\Admin\AppData\Local\Temp\maria.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2128
- C:\ProgramData\server.exe
  "C:\ProgramData\server.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:988
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2896

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

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Downloads

\ProgramData\server.exe

Filesize
164KB

MD5
1636678632f7d7f3bd1965bfe1a51c08

SHA1
e57f920beaec6462178c0ec5e577d8a12b9251b6

SHA256
56cf1856341fb63bffc8571f5044e8ef535ea8cb3710003e1006962ed9c5202b

SHA512
3dbf54e12616ff750daaade42ba7af6ba86101d5280d052a73343f6d391bcd30cc0ebc56f99c065881b9886201073450d59fbcc211d2d323d1b0a126d4e2965e

Download Submit
memory/988-14-0x00000000741C0000-0x000000007476B000-memory.dmp

Filesize
5.7MB

Download
memory/988-18-0x00000000741C0000-0x000000007476B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-0-0x00000000741C1000-0x00000000741C2000-memory.dmp

Filesize
4KB

Download
memory/2128-1-0x00000000741C0000-0x000000007476B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-2-0x00000000741C0000-0x000000007476B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-15-0x00000000741C0000-0x000000007476B000-memory.dmp

Filesize
5.7MB

Download
memory/2128-16-0x00000000741C0000-0x000000007476B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads