Malware Analysis Report

2025-03-15 06:22

Sample ID 241004-tc9mpsxcpe
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/Bladabindi

Njrat family

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 15:55

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 15:55

Reported

2024-10-04 15:58

Platform

win7-20240903-en

Max time kernel

110s

Max time network

21s

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:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe N/A
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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_Classes\Local Settings C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\_auto_file C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\_auto_file\ C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\_auto_file\shell\Read C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\_auto_file\shell C:\Windows\SysWOW64\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_CLASSES\_auto_file\shell\Read\command C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000_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

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 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 1088 wrote to memory of 2204 N/A C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2816 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2204 wrote to memory of 2816 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2204 wrote to memory of 2816 N/A C:\Windows\SysWOW64\rundll32.exe C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
PID 2204 wrote to memory of 2816 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/1088-0-0x00000000743C1000-0x00000000743C2000-memory.dmp

memory/1088-1-0x00000000743C0000-0x000000007496B000-memory.dmp

memory/1088-2-0x00000000743C0000-0x000000007496B000-memory.dmp

memory/1088-5-0x00000000743C0000-0x000000007496B000-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 6f81f8465428ae258c4b5e86c32e10f1
SHA1 6721568f1aa4356fdced4a2205537ee433b3306c
SHA256 db8bd4601085aa1b90aa587cb3a0932db0e8ffaa826fd866a3521d539606d623
SHA512 63270d7f81df627f268eef886b55cac8a232b044621a71cb885347b8cd36bce30174b01fc0cb58dddd649a7a9225453315f8798d0cee0b3389c79882cec1beaa

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-04 15:55

Reported

2024-10-04 15:57

Platform

win10v2004-20240802-en

Max time kernel

92s

Max time network

94s

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-1-5-21-2392887640-1187051047-2909758433-1000_Classes\Local Settings C:\Users\Admin\AppData\Local\Temp\ef66e195b16d21be098863d08ef732915df47835b42b7641a7fc915f690b508eN.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000_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 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 68.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 67.209.201.84.in-addr.arpa udp

Files

memory/3132-0-0x00000000753E2000-0x00000000753E3000-memory.dmp

memory/3132-1-0x00000000753E0000-0x0000000075991000-memory.dmp

memory/3132-2-0x00000000753E0000-0x0000000075991000-memory.dmp

memory/3132-6-0x00000000753E0000-0x0000000075991000-memory.dmp