njrat | 233542a5a45357568fc6cd9d4559362afcefa19291617e0995a195586f4bd2f8

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-04-2024 16:47

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General

Target

6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe
Size

37KB
MD5

871722db5b9b702357b675e48e491193
SHA1

ec5cf5b57414fa8253a842bb06fc6822b85e399d
SHA256

6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8
SHA512

9757a9bfc13b23a30590dfc145f837c22fffad56f1c47ca7354ddded78c8afc2418b0a5ce0f0add6aaf59354355577141a1b05115b8faf5d978445570a58b478
SSDEEP

384:GstKUiDtblmJEpRGyEf7JfJuQCY6iXQrAF+rMRTyN/0L+EcoinblneHQM3epzXIf:5tiHpR9Ef7JsQCFiArM+rMRa8NuCFt

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

5.tcp.eu.ngrok.io:11024

Mutex

886e4e6cf55be20a7d674097273f111d

Attributes

reg_key
886e4e6cf55be20a7d674097273f111d
splitter
|'|'|

Signatures

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
2524	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\886e4e6cf55be20a7d674097273f111d.exe	ESET Service.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\886e4e6cf55be20a7d674097273f111d.exe	ESET Service.exe

Executes dropped EXE 1 IoCs

pid	Process
2516	ESET Service.exe

Loads dropped DLL 1 IoCs

pid	Process
3012	6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.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-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\886e4e6cf55be20a7d674097273f111d = "\"C:\\Users\\Admin\\AppData\\Roaming\\ESET Service.exe\" .."	ESET Service.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\886e4e6cf55be20a7d674097273f111d = "\"C:\\Users\\Admin\\AppData\\Roaming\\ESET Service.exe\" .."	ESET Service.exe

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

Web Service

T1102

flow	ioc
2	5.tcp.eu.ngrok.io
22	5.tcp.eu.ngrok.io
39	5.tcp.eu.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	ESET Service.exe
File opened for modification	C:\autorun.inf	ESET Service.exe
File created	D:\autorun.inf	ESET Service.exe
File created	F:\autorun.inf	ESET Service.exe
File opened for modification	F:\autorun.inf	ESET Service.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2720	taskkill.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe
2516	ESET Service.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2516	ESET Service.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	ESET Service.exe
Token: SeDebugPrivilege	2720	taskkill.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe
Token: 33	2516	ESET Service.exe
Token: SeIncBasePriorityPrivilege	2516	ESET Service.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2516	3012	6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe	28
PID 3012 wrote to memory of 2516	3012	6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe	28
PID 3012 wrote to memory of 2516	3012	6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe	28
PID 3012 wrote to memory of 2516	3012	6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe	28
PID 2516 wrote to memory of 2524	2516	ESET Service.exe	29
PID 2516 wrote to memory of 2524	2516	ESET Service.exe	29
PID 2516 wrote to memory of 2524	2516	ESET Service.exe	29
PID 2516 wrote to memory of 2524	2516	ESET Service.exe	29
PID 2516 wrote to memory of 2720	2516	ESET Service.exe	31
PID 2516 wrote to memory of 2720	2516	ESET Service.exe	31
PID 2516 wrote to memory of 2720	2516	ESET Service.exe	31
PID 2516 wrote to memory of 2720	2516	ESET Service.exe	31

C:\Users\Admin\AppData\Local\Temp\6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe
"C:\Users\Admin\AppData\Local\Temp\6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Users\Admin\AppData\Roaming\ESET Service.exe
  "C:\Users\Admin\AppData\Roaming\ESET Service.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops autorun.inf file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\ESET Service.exe" "ESET Service.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2524
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM taskmgr.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2720

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

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

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

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\ESET Service.exe

Filesize
37KB

MD5
871722db5b9b702357b675e48e491193

SHA1
ec5cf5b57414fa8253a842bb06fc6822b85e399d

SHA256
6f3d6bf9ee09bd4cd6af117cca33965c33b99a7380d8de14450b7d4a3cd499b8

SHA512
9757a9bfc13b23a30590dfc145f837c22fffad56f1c47ca7354ddded78c8afc2418b0a5ce0f0add6aaf59354355577141a1b05115b8faf5d978445570a58b478

Download Submit
memory/2516-11-0x0000000074D40000-0x00000000752EB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-12-0x0000000000BF0000-0x0000000000C30000-memory.dmp

Filesize
256KB

Download
memory/2516-13-0x0000000074D40000-0x00000000752EB000-memory.dmp

Filesize
5.7MB

Download
memory/2516-23-0x0000000074D40000-0x00000000752EB000-memory.dmp

Filesize
5.7MB

Download
memory/3012-0-0x0000000074D40000-0x00000000752EB000-memory.dmp

Filesize
5.7MB

Download
memory/3012-2-0x0000000000370000-0x00000000003B0000-memory.dmp

Filesize
256KB

Download
memory/3012-1-0x0000000074D40000-0x00000000752EB000-memory.dmp

Filesize
5.7MB

Download
memory/3012-10-0x0000000074D40000-0x00000000752EB000-memory.dmp

Filesize
5.7MB

Download