Malware Analysis Report

2025-01-22 14:03

Sample ID 240228-2cre5afd2t
Target Neironka.exe
SHA256 abb16828f2ac53b4a92aa200510f07eafc2c1653c7623d311a8b1f51c005b7e3
Tags
njrat hacked persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

abb16828f2ac53b4a92aa200510f07eafc2c1653c7623d311a8b1f51c005b7e3

Threat Level: Known bad

The file Neironka.exe was found to be: Known bad.

Malicious Activity Summary

njrat hacked persistence trojan

njRAT/Bladabindi

Executes dropped EXE

Checks computer location settings

Drops startup file

Adds Run key to start application

Drops file in Windows directory

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-28 22:26

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-28 22:26

Reported

2024-02-28 22:28

Platform

win10v2004-20240226-en

Max time kernel

96s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Neironka.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Neironka.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\notpad.exe C:\Windows\notpad.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\notpad.exe C:\Windows\notpad.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\notpad.url C:\Windows\notpad.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\notpad.exe N/A
N/A N/A C:\Windows\notpad.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\notpad.exe = "\"C:\\Windows\\notpad.exe\" .." C:\Windows\notpad.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\notpad.exe = "\"C:\\Windows\\notpad.exe\" .." C:\Windows\notpad.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\notpad.exe C:\Windows\notpad.exe N/A
File created C:\Windows\notpad.exe C:\Users\Admin\AppData\Local\Temp\Neironka.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\taskkill.exe N/A
N/A N/A C:\Windows\SYSTEM32\taskkill.exe N/A
N/A N/A C:\Windows\SYSTEM32\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A
Token: 33 N/A C:\Windows\notpad.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\notpad.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1060 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\Neironka.exe C:\Windows\notpad.exe
PID 1060 wrote to memory of 4992 N/A C:\Users\Admin\AppData\Local\Temp\Neironka.exe C:\Windows\notpad.exe
PID 1060 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\Neironka.exe C:\Windows\System32\cmd.exe
PID 1060 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\Neironka.exe C:\Windows\System32\cmd.exe
PID 2772 wrote to memory of 2788 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\choice.exe
PID 2772 wrote to memory of 2788 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\choice.exe
PID 4992 wrote to memory of 3472 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\taskkill.exe
PID 4992 wrote to memory of 3472 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\taskkill.exe
PID 4992 wrote to memory of 4408 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 4408 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3152 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3152 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3700 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\taskkill.exe
PID 4992 wrote to memory of 3700 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\taskkill.exe
PID 4992 wrote to memory of 4296 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 4296 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3288 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3288 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3132 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\taskkill.exe
PID 4992 wrote to memory of 3132 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\taskkill.exe
PID 4992 wrote to memory of 3684 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 3684 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 816 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe
PID 4992 wrote to memory of 816 N/A C:\Windows\notpad.exe C:\Windows\SYSTEM32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Neironka.exe

"C:\Users\Admin\AppData\Local\Temp\Neironka.exe"

C:\Windows\notpad.exe

"C:\Windows\notpad.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 5 & Del "C:\Users\Admin\AppData\Local\Temp\Neironka.exe"

C:\Windows\system32\choice.exe

choice /C Y /N /D Y /T 5

C:\Windows\SYSTEM32\taskkill.exe

taskkill /f im Wireshark.exe

C:\Windows\SYSTEM32\schtasks.exe

schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f

C:\Windows\SYSTEM32\schtasks.exe

schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\Windows\notpad.exe

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2256,i,9172343514068348080,519219714517961765,262144 --variations-seed-version /prefetch:8

C:\Windows\SYSTEM32\taskkill.exe

taskkill /f im Wireshark.exe

C:\Windows\SYSTEM32\schtasks.exe

schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f

C:\Windows\SYSTEM32\schtasks.exe

schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\Windows\notpad.exe

C:\Windows\notpad.exe

C:\Windows\notpad.exe

C:\Windows\SYSTEM32\taskkill.exe

taskkill /f im Wireshark.exe

C:\Windows\SYSTEM32\schtasks.exe

schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f

C:\Windows\SYSTEM32\schtasks.exe

schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\Windows\notpad.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
N/A 192.168.2.133:666 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
N/A 192.168.2.133:666 tcp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 190.178.17.96.in-addr.arpa udp
N/A 192.168.2.133:666 tcp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp

Files

memory/1060-1-0x000000001BF90000-0x000000001C45E000-memory.dmp

memory/1060-0-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/1060-2-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/1060-4-0x0000000001610000-0x0000000001620000-memory.dmp

memory/1060-3-0x00000000015D0000-0x00000000015E6000-memory.dmp

memory/1060-5-0x000000001C460000-0x000000001C506000-memory.dmp

C:\Windows\notpad.exe

MD5 6d6279f8865426ea33d2453ec643c6d8
SHA1 5ff7ae59215460ee4c3a48291dc5ec8f4b009a1d
SHA256 abb16828f2ac53b4a92aa200510f07eafc2c1653c7623d311a8b1f51c005b7e3
SHA512 938bbaa2f8f676d52bbcc899e4daaaa21f5d28a03b0d0544c3cd60813558dbcc523fc8d1a203f6e73d78ca97f88d35077af4c651efba8c7d7f9ac8bf549a0949

memory/4992-15-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/4992-16-0x0000000000AE0000-0x0000000000AF0000-memory.dmp

memory/4992-18-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/1060-17-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/4992-22-0x000000001BC30000-0x000000001BCCC000-memory.dmp

memory/4992-23-0x000000001AEF0000-0x000000001AEF8000-memory.dmp

memory/4992-27-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/4992-28-0x0000000000AE0000-0x0000000000AF0000-memory.dmp

memory/4848-30-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/4848-31-0x0000000001A10000-0x0000000001A20000-memory.dmp

memory/4848-32-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp

memory/4848-34-0x00007FFEDA3D0000-0x00007FFEDAD71000-memory.dmp