njrat | 55268aba21741e673432fd0008b19725a32191a14212cff94440a2df4e0f92fe

Analysis

max time kernel
23s
max time network
16s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
28-01-2025 12:04

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General

Target

Nursultan.exe
Size

17.5MB
MD5

186878f03c828104ae806baba96aeb97
SHA1

1913e0299b2fc42f275b13cac435b78e3b6f37df
SHA256

55268aba21741e673432fd0008b19725a32191a14212cff94440a2df4e0f92fe
SHA512

b9e4c4109ea9386d394d72e6dfcf3d4a020ba2591844dfe114482e50d72613e6c7b32ec2c40606bc63c9185d8728c115587897ddb3379bc09cdf4b5ec8737ad8
SSDEEP

393216:aquA/JFQOEKdqGdVgT7uOPXtWV0HVvvoP7cI/NG1CMkCCk3BrS:apMKOEKd9dK7uOPXtW8otAwMkCCuB2

Score

10^/10

njrat agilenet discovery trojan

Malware Config

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Obfuscated with Agile.Net obfuscator 2 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral1/files/0x0006000000045512-4.dat	agile_net
behavioral1/memory/4124-9-0x0000000000400000-0x0000000001592000-memory.dmp	agile_net

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nursultan.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3454535599-122122096-1812617400-1000_Classes\Local Settings	Nursultan.exe
Key created	\REGISTRY\USER\S-1-5-21-3454535599-122122096-1812617400-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2616	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 21 IoCs

pid	Process
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe
704	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 704 wrote to memory of 2616	704	OpenWith.exe	90
PID 704 wrote to memory of 2616	704	OpenWith.exe	90

C:\Users\Admin\AppData\Local\Temp\Nursultan.exe
"C:\Users\Admin\AppData\Local\Temp\Nursultan.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:4124

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:704
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\Bunifu.Licensing.dll
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Bunifu.Licensing.dll

Filesize
1.3MB

MD5
2b2740e0c34a46de31cf9da8a75d77cf

SHA1
242324f1112e6387cda41686291b6e9a415eeb8c

SHA256
a9be91cae167702885a5ca74273db779e3e391e2e604cc03779ed403c53ebe43

SHA512
605eb300b159e6ed2ee872b6ee378eed7dde6541000221fcd94d52057be91cb3c7dd65c7203f05e0718303b157b6fb941498b5e653501f97f0417d459da6bc40

Download Submit
memory/4124-9-0x0000000000400000-0x0000000001592000-memory.dmp

Filesize
17.6MB

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