Malware Analysis Report

2025-03-15 06:23

Sample ID 241004-tex2pashrq
Target ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN
SHA256 ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508e
Tags
hacked njrat discovery 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508e

Threat Level: Known bad

The file ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN was found to be: Known bad.

Malicious Activity Summary

hacked njrat discovery trojan

Njrat family

njRAT/Bladabindi

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Modifies registry class

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-04 15:58

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-04 15:58

Reported

2024-10-04 16:01

Platform

win7-20240903-en

Max time kernel

117s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\_auto_file C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\_auto_file\ C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\_auto_file\shell\Read C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\_auto_file\shell C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\_auto_file\shell\Read\command C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2232 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2788 wrote to memory of 2136 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2788 wrote to memory of 2136 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2788 wrote to memory of 2136 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2788 wrote to memory of 2136 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe

"C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe"

C:\Windows\SysWOW64\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\NWA

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe

"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\NWA"

Network

N/A

Files

memory/2232-0-0x0000000074F51000-0x0000000074F52000-memory.dmp

memory/2232-1-0x0000000074F50000-0x00000000754FB000-memory.dmp

memory/2232-2-0x0000000074F50000-0x00000000754FB000-memory.dmp

memory/2232-5-0x0000000074F50000-0x00000000754FB000-memory.dmp

C:\Users\Admin\AppData\Roaming\NWA

MD5 c57af69431740be4a691d5d749265c90
SHA1 1dcf40896ee9a465a9408a58f2e8896fe55fa3ee
SHA256 ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508e
SHA512 d861c392677e6b044109093db58562cb5c73a8eefc52ed978cae927a64291c49aea7bbafe2b3afa6426d75c49172f1651fe639a04afe45daa07759612948cae8

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

MD5 80b21b3cde468a62959430473e27cefa
SHA1 86ae76c611c16aa6f817c7ab1b385aa54bc41013
SHA256 0e902c061323e717392730bbc81fe6f9cb80abcbec430af30d47dbc24835964d
SHA512 bf861a703a6e3edba87e3deace2c518d62a0455ff4cbbb19ff4c92c6c73fae13c315b76e86c83b2fe760ea678385243cbd30dee085c174fefea7a47fe0b455f2

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-04 15:58

Reported

2024-10-04 16:01

Platform

win10v2004-20240802-en

Max time kernel

96s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe"

Signatures

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\OpenWith.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe

"C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe"

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 27.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 66.209.201.84.in-addr.arpa udp
US 52.111.227.13:443 tcp
US 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/3660-0-0x0000000074A82000-0x0000000074A83000-memory.dmp

memory/3660-1-0x0000000074A80000-0x0000000075031000-memory.dmp

memory/3660-2-0x0000000074A80000-0x0000000075031000-memory.dmp

memory/3660-6-0x0000000074A80000-0x0000000075031000-memory.dmp