njrat | 39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52

Analysis

max time kernel
147s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 01:05

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General

Target
39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe
Size 114KB
Sample240527-bfqpwsbf53
SHA256 39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52
MD5 2bc33e129d53f2d2a3a6387910d73111
SHA1 567e478405352dfa7aca5da09e65ac8c679abc7d
SHA512 0c6d82669d5d14f9fbc0a327079fc7c1ac6ebf2530933887d7298c3da2ca5988be7da83c14cbd9e12944d79cf940787869770a4ffcc7f5df261fe66192ef0df1
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMz:P5eznsjsguGDFqGZ2rz
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

neuf

doddyfire.linkpc.net:10000

Mutex

e1a87040f2026369a233f9ae76301b7b

Attributes

reg_key
e1a87040f2026369a233f9ae76301b7b
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
1964	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe

Executes dropped EXE 2 IoCs

pid	Process
2660	chargeable.exe
4340	chargeable.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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe"	39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 4340	2660	chargeable.exe	97

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe
Token: 33	4340	chargeable.exe
Token: SeIncBasePriorityPrivilege	4340	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 912 wrote to memory of 2660	912	39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe	94
PID 912 wrote to memory of 2660	912	39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe	94
PID 912 wrote to memory of 2660	912	39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe	94
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 2660 wrote to memory of 4340	2660	chargeable.exe	97
PID 4340 wrote to memory of 1964	4340	chargeable.exe	98
PID 4340 wrote to memory of 1964	4340	chargeable.exe	98
PID 4340 wrote to memory of 1964	4340	chargeable.exe	98

C:\Users\Admin\AppData\Local\Temp\39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe
"C:\Users\Admin\AppData\Local\Temp\39972599e9f197a89cafc40a5a6d7311bd5102588102c4b6107003cb6cc1cb52.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:912
- C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
  "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2660
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4340
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:1964

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

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

chargeable.exe

Path C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
Size 114KB
SHA256 6e4804551083303c01ef66d0f04a2a59d7d9aaf5aba36adbdbc573efd7b53645
MD5 1d808e61a89a8eed7cce33d956adfe4d
SHA1 7652214ae07c76d9635f6e779337a3c685708d1b
SHA512 6b3b336e41227698fd18cef8d59a7176f031e1df6b57eef48353e61cafde51234db3f0fcab70f619d0c889f0749b63776d13d4a1c79c45933e56905696f64efa
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMp:P5eznsjsguGDFqGZ2rp
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/912-0-0x0000000075412000-0x0000000075413000-memory.dmp

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memory/912-1-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/912-2-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/912-17-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/2660-18-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/2660-19-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/2660-24-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/4340-20-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/4340-23-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/4340-25-0x0000000075410000-0x00000000759C1000-memory.dmp

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memory/4340-26-0x0000000075410000-0x00000000759C1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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