njrat | a6eb4359bb5990a5db17e3e00b1cc6f9459e06fb50494672320d9eafb8da0019

Analysis

max time kernel
114s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
17/07/2024, 00:51

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General

Target
3efc93c40883d70d0cee9f7107723200N.exe
Size 116KB
Sample240717-a7teesybrm
SHA256 a6eb4359bb5990a5db17e3e00b1cc6f9459e06fb50494672320d9eafb8da0019
MD5 3efc93c40883d70d0cee9f7107723200
SHA1 a4cba8f4a9de9a133631319fa6c3fd6a5ad0b7ef
SHA512 1b397da9e3429cef4be412b5c1e317ddc81ff2a541f4dfde9cca36c7a7aba4e76860959dc44d8db3c4334b447ffb009551a6112c0a7d0c9a978ca5cd8d9244ff
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZbe:P5eznsjsguGDFqGZ2rDLk
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf evasion persistence privilege_escalation 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
3728	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-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	3efc93c40883d70d0cee9f7107723200N.exe

Executes dropped EXE 2 IoCs

pid	Process
2284	chargeable.exe
4432	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-1-5-21-384068567-2943195810-3631207890-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	3efc93c40883d70d0cee9f7107723200N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3efc93c40883d70d0cee9f7107723200N.exe"	3efc93c40883d70d0cee9f7107723200N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2284 set thread context of 4432	2284	chargeable.exe	97

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

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe
Token: 33	4432	chargeable.exe
Token: SeIncBasePriorityPrivilege	4432	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2284	2820	3efc93c40883d70d0cee9f7107723200N.exe	94
PID 2820 wrote to memory of 2284	2820	3efc93c40883d70d0cee9f7107723200N.exe	94
PID 2820 wrote to memory of 2284	2820	3efc93c40883d70d0cee9f7107723200N.exe	94
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 2284 wrote to memory of 4432	2284	chargeable.exe	97
PID 4432 wrote to memory of 3728	4432	chargeable.exe	98
PID 4432 wrote to memory of 3728	4432	chargeable.exe	98
PID 4432 wrote to memory of 3728	4432	chargeable.exe	98

C:\Users\Admin\AppData\Local\Temp\3efc93c40883d70d0cee9f7107723200N.exe
"C:\Users\Admin\AppData\Local\Temp\3efc93c40883d70d0cee9f7107723200N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2820
- 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:2284
- - 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:4432
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      PID:3728

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

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

chargeable.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\chargeable.exe.log
Size 400B
SHA256 c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd
MD5 0a9b4592cd49c3c21f6767c2dabda92f
SHA1 f534297527ae5ccc0ecb2221ddeb8e58daeb8b74
SHA512 6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307
MD5 SHA1 SHA512

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chargeable.exe

Path C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
Size 117KB
SHA256 8b9bab2fd610ed619d755d490db3db665da8e9a3a4fa152454e932d73e1d3648
MD5 5ba5bf7dc35bb917d388ed87de04fd16
SHA1 f3882553ba44f064a2ae93cb6c0b6f6d10e6a4a8
SHA512 15d96322733a9a32a8f71edbdbfd08a9dc36b481602df54a546f1156eaed0ab7091254fba154802439bbc9709232bdcb339322f613ade762fd1dc10db5885653
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZbB:P5eznsjsguGDFqGZ2rDLH
MD5 SHA1 SHA512 SSDEEP

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memory/2284-19-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/2284-18-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/2284-25-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/2820-2-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/2820-17-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/2820-0-0x0000000074A42000-0x0000000074A43000-memory.dmp

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memory/2820-1-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/4432-20-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/4432-24-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/4432-26-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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memory/4432-27-0x0000000074A40000-0x0000000074FF1000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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