njrat | 5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/02/2025, 07:58

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General

Target

am.exe
Size

93KB
MD5

59b40a406af1b307f204b246371db9bf
SHA1

8448937d6dcd4868082a2e09fd6ff582d9c73c70
SHA256

5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b
SHA512

1c392cda14f386a45b20f08f2f5ec3a6fcfd06f649cfe21c1f3f9ce6a31e4485cb5598c41c2b4cbcf312bc67ca0db41e1dc887caeeabd325f6259ee85cf49fec
SSDEEP

768:WY3TmdD9O/pBcxYsbae6GIXb9pDX2KC98PL0OXLeuXxrjEtCdnl2pi1Rz4Rk3Y7E:hm3Ox6baIa9R/j00ljEwzGi1dDuD6gS

Score

10^/10

njrat bavilla defense_evasion discovery persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

bavilla

hakim32.ddns.net:2000

192.168.1.15:5552

Mutex

522259726718d1753f479b9af3c0b6f5

Attributes

reg_key
522259726718d1753f479b9af3c0b6f5
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 3 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2928	netsh.exe
2768	netsh.exe
3068	netsh.exe

Drops startup file 4 IoCs

description	ioc	Process
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\522259726718d1753f479b9af3c0b6f5Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\522259726718d1753f479b9af3c0b6f5Windows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe

Executes dropped EXE 3 IoCs

pid	Process
2524	server.exe
2876	StUpdate.exe
1980	StUpdate.exe

Loads dropped DLL 8 IoCs

pid	Process
1740	am.exe
1740	am.exe
2876	StUpdate.exe
2876	StUpdate.exe
2876	StUpdate.exe
1980	StUpdate.exe
1980	StUpdate.exe
1980	StUpdate.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 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 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
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

System Location Discovery: System Language Discovery 1 TTPs 8 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	am.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2908	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe
2524	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2524	1740	am.exe	30
PID 1740 wrote to memory of 2524	1740	am.exe	30
PID 1740 wrote to memory of 2524	1740	am.exe	30
PID 1740 wrote to memory of 2524	1740	am.exe	30
PID 2524 wrote to memory of 3068	2524	server.exe	31
PID 2524 wrote to memory of 3068	2524	server.exe	31
PID 2524 wrote to memory of 3068	2524	server.exe	31
PID 2524 wrote to memory of 3068	2524	server.exe	31
PID 2524 wrote to memory of 2928	2524	server.exe	33
PID 2524 wrote to memory of 2928	2524	server.exe	33
PID 2524 wrote to memory of 2928	2524	server.exe	33
PID 2524 wrote to memory of 2928	2524	server.exe	33
PID 2524 wrote to memory of 2768	2524	server.exe	35
PID 2524 wrote to memory of 2768	2524	server.exe	35
PID 2524 wrote to memory of 2768	2524	server.exe	35
PID 2524 wrote to memory of 2768	2524	server.exe	35
PID 2524 wrote to memory of 2908	2524	server.exe	37
PID 2524 wrote to memory of 2908	2524	server.exe	37
PID 2524 wrote to memory of 2908	2524	server.exe	37
PID 2524 wrote to memory of 2908	2524	server.exe	37
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 2876	2596	taskeng.exe	41
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42
PID 2596 wrote to memory of 1980	2596	taskeng.exe	42

C:\Users\Admin\AppData\Local\Temp\am.exe
"C:\Users\Admin\AppData\Local\Temp\am.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2524
- - 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:3068
- - 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:2928
- - 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:2768
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2908

C:\Windows\system32\taskeng.exe
taskeng.exe {F334E06A-3117-433A-87B8-A83FD0F68C55} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
  C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
  C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
93KB

MD5
59b40a406af1b307f204b246371db9bf

SHA1
8448937d6dcd4868082a2e09fd6ff582d9c73c70

SHA256
5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b

SHA512
1c392cda14f386a45b20f08f2f5ec3a6fcfd06f649cfe21c1f3f9ce6a31e4485cb5598c41c2b4cbcf312bc67ca0db41e1dc887caeeabd325f6259ee85cf49fec

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

Filesize
4B

MD5
c6bdbc9d86009ccf7e8de878c9603213

SHA1
2a4b8716f978f2d107bcd8294b486a5ee45afe6e

SHA256
36a067fdfcee95eb270f0b72e3b9e40d52c907d749fb9a8490d82f8ee56b29eb

SHA512
c42a52cd8837e2533b3d5ec97639f0c94287e3d7a6c73635c21df50eba8483b60df15bf262a308836875cd9afed504e7f98a2f6b254e4181fe548b1853d42256

Download Submit
memory/1740-0-0x0000000074AB1000-0x0000000074AB2000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-2-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/1740-16-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2524-15-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2524-14-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download
memory/2524-25-0x0000000074AB0000-0x000000007505B000-memory.dmp

Filesize
5.7MB

Download