njrat | d7108405eebedbd1d610c13bd7dae066a7ca5497f7e1c8c977a92b8401083709

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:09

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General

Target

2bb7c2979e9372d006198745f13bf5c6.exe
Size

37KB
MD5

2bb7c2979e9372d006198745f13bf5c6
SHA1

1c4b3f17b3d2640976d9126fdcc42344bb2b9cf3
SHA256

d5673188c792f3265504fbb7fd9f01a016443b24e3f16321b92c2f8cd2781e99
SHA512

c8e17bc5dca8d462f96a6bfea459f6e8c73a35978e55db2f3e34b14a221595c9ba9acf27c838b906b6ae6c66afc73967d28508da0e754ec10dfe4e26ba14b46b
SSDEEP

384:c0bKMizdhjnBhFbJ8ycPpbfbLwCwEfrAF+rMRTyN/0L+EcoinblneHQM3epzXTNp:bbghlLJfcPpb/FwyrM+rMRa8NuNVt

Score

10^/10

njrat cracked defense_evasion discovery persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Cracked

2.tcp.ngrok.io:15489

Mutex

bfcd93b9dd810793ea187614b1cdc5e8

Attributes

reg_key
bfcd93b9dd810793ea187614b1cdc5e8
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2884	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bfcd93b9dd810793ea187614b1cdc5e8.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bfcd93b9dd810793ea187614b1cdc5e8.exe	system.exe

Executes dropped EXE 1 IoCs

pid	Process
1664	system.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2bb7c2979e9372d006198745f13bf5c6.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\bfcd93b9dd810793ea187614b1cdc5e8 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\bfcd93b9dd810793ea187614b1cdc5e8 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .."	system.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
2	2.tcp.ngrok.io
5	2.tcp.ngrok.io
11	2.tcp.ngrok.io

Drops autorun.inf file 1 TTPs 5 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	system.exe
File opened for modification	C:\autorun.inf	system.exe
File created	D:\autorun.inf	system.exe
File created	F:\autorun.inf	system.exe
File opened for modification	F:\autorun.inf	system.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	2bb7c2979e9372d006198745f13bf5c6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe
1664	system.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1664	system.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe
Token: 33	1664	system.exe
Token: SeIncBasePriorityPrivilege	1664	system.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1664	2068	2bb7c2979e9372d006198745f13bf5c6.exe	31
PID 2068 wrote to memory of 1664	2068	2bb7c2979e9372d006198745f13bf5c6.exe	31
PID 2068 wrote to memory of 1664	2068	2bb7c2979e9372d006198745f13bf5c6.exe	31
PID 2068 wrote to memory of 1664	2068	2bb7c2979e9372d006198745f13bf5c6.exe	31
PID 1664 wrote to memory of 2884	1664	system.exe	32
PID 1664 wrote to memory of 2884	1664	system.exe	32
PID 1664 wrote to memory of 2884	1664	system.exe	32
PID 1664 wrote to memory of 2884	1664	system.exe	32

C:\Users\Admin\AppData\Local\Temp\2bb7c2979e9372d006198745f13bf5c6.exe
"C:\Users\Admin\AppData\Local\Temp\2bb7c2979e9372d006198745f13bf5c6.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Roaming\system.exe
  "C:\Users\Admin\AppData\Roaming\system.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - 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:1664
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\system.exe" "system.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

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

Replication Through Removable Media

T1091

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\system.exe

Filesize
37KB

MD5
2bb7c2979e9372d006198745f13bf5c6

SHA1
1c4b3f17b3d2640976d9126fdcc42344bb2b9cf3

SHA256
d5673188c792f3265504fbb7fd9f01a016443b24e3f16321b92c2f8cd2781e99

SHA512
c8e17bc5dca8d462f96a6bfea459f6e8c73a35978e55db2f3e34b14a221595c9ba9acf27c838b906b6ae6c66afc73967d28508da0e754ec10dfe4e26ba14b46b

Download Submit
memory/1664-11-0x0000000074A00000-0x0000000074FAB000-memory.dmp

Filesize
5.7MB

Download
memory/1664-12-0x0000000074A00000-0x0000000074FAB000-memory.dmp

Filesize
5.7MB

Download
memory/1664-22-0x0000000074A00000-0x0000000074FAB000-memory.dmp

Filesize
5.7MB

Download
memory/2068-0-0x0000000074A01000-0x0000000074A02000-memory.dmp

Filesize
4KB

Download
memory/2068-1-0x0000000074A00000-0x0000000074FAB000-memory.dmp

Filesize
5.7MB

Download
memory/2068-2-0x0000000074A00000-0x0000000074FAB000-memory.dmp

Filesize
5.7MB

Download
memory/2068-10-0x0000000074A00000-0x0000000074FAB000-memory.dmp

Filesize
5.7MB

Download