njrat | 5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06/02/2025, 06:36

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General

Target

5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.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
2596	netsh.exe
2788	netsh.exe
2616	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\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

Executes dropped EXE 4 IoCs

pid	Process
2408	server.exe
1028	StUpdate.exe
1136	StUpdate.exe
2284	StUpdate.exe

Loads dropped DLL 11 IoCs

pid	Process
908	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe
908	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe
1028	StUpdate.exe
1028	StUpdate.exe
1028	StUpdate.exe
1136	StUpdate.exe
1136	StUpdate.exe
1136	StUpdate.exe
2284	StUpdate.exe
2284	StUpdate.exe
2284	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 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
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
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 9 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	netsh.exe
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	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.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
2016	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe
2408	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2408	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe
Token: 33	2408	server.exe
Token: SeIncBasePriorityPrivilege	2408	server.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 908 wrote to memory of 2408	908	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe	29
PID 908 wrote to memory of 2408	908	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe	29
PID 908 wrote to memory of 2408	908	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe	29
PID 908 wrote to memory of 2408	908	5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe	29
PID 2408 wrote to memory of 2596	2408	server.exe	30
PID 2408 wrote to memory of 2596	2408	server.exe	30
PID 2408 wrote to memory of 2596	2408	server.exe	30
PID 2408 wrote to memory of 2596	2408	server.exe	30
PID 2408 wrote to memory of 2788	2408	server.exe	32
PID 2408 wrote to memory of 2788	2408	server.exe	32
PID 2408 wrote to memory of 2788	2408	server.exe	32
PID 2408 wrote to memory of 2788	2408	server.exe	32
PID 2408 wrote to memory of 2616	2408	server.exe	33
PID 2408 wrote to memory of 2616	2408	server.exe	33
PID 2408 wrote to memory of 2616	2408	server.exe	33
PID 2408 wrote to memory of 2616	2408	server.exe	33
PID 2408 wrote to memory of 2016	2408	server.exe	34
PID 2408 wrote to memory of 2016	2408	server.exe	34
PID 2408 wrote to memory of 2016	2408	server.exe	34
PID 2408 wrote to memory of 2016	2408	server.exe	34
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1028	2104	taskeng.exe	39
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 1136	2104	taskeng.exe	40
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41
PID 2104 wrote to memory of 2284	2104	taskeng.exe	41

C:\Users\Admin\AppData\Local\Temp\5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe
"C:\Users\Admin\AppData\Local\Temp\5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:908
- 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:2408
- - 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:2596
- - 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:2788
- - 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:2616
- - 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:2016

C:\Windows\system32\taskeng.exe
taskeng.exe {3634B9B2-1DCA-41D3-BB32-02C44C0BF7D0} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2104
- 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:1028
- 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:1136
- 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:2284

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\Roaming\app

Filesize
4B

MD5
3eb8a6afa534fadc147aa70dea76e863

SHA1
03b827d99098f69c9f126679598f7166c99d1624

SHA256
d3d1d98df443947ab0b52378acbb5f5c21593677b45f0403b3831c93d8be7fca

SHA512
b9d20e1f18dd2dc9a71e436e5c27854196f1f8f0adfbf59aed9d70ab83b88c2c39958720508e87d98f8cb23dcb7bbaa81825406439edcc07b6d2ee310acd4327

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

Filesize
93KB

MD5
59b40a406af1b307f204b246371db9bf

SHA1
8448937d6dcd4868082a2e09fd6ff582d9c73c70

SHA256
5f1eaaa7781758b4830a2c576234d1687f95c1b058b48d833a4d71f2fa970d6b

SHA512
1c392cda14f386a45b20f08f2f5ec3a6fcfd06f649cfe21c1f3f9ce6a31e4485cb5598c41c2b4cbcf312bc67ca0db41e1dc887caeeabd325f6259ee85cf49fec

Download Submit
memory/908-0-0x00000000748E1000-0x00000000748E2000-memory.dmp

Filesize
4KB

Download
memory/908-1-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Filesize
5.7MB

Download
memory/908-2-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Filesize
5.7MB

Download
memory/908-14-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-15-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-16-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-25-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Filesize
5.7MB

Download