njrat | 4c426b57772aa2d212791ab542196910baf6c66120d0353b5bb2bfb6a5214717

Analysis

max time kernel
94s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-03-2024 11:41

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General

Target

cryptedfile.exe
Size

418KB
MD5

4826f9695be9d30cc7ab41e08ef55219
SHA1

565e8c2e3933f6410b14e20c2f80e9f3436977f2
SHA256

4c426b57772aa2d212791ab542196910baf6c66120d0353b5bb2bfb6a5214717
SHA512

705d2b02b1aaac665a4420b0c78e8328ad738634c3f0390c05a0d919205eb995687ceb5b57b7a2d36c8c0ac76d10fa45563ec7c32dd2937a98c533181e4eedc7
SSDEEP

12288:OREkD5DFr/cp9gxh/xiAa5HLL4UYUdcpc3RrC2HvGjyuXAu:OR1vUbXKyup

Score

10^/10

njrat trojan

Malware Config

Signatures

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

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	cryptedfile.exe

Executes dropped EXE 1 IoCs

pid	Process
1480	WindowsServices.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\WindowsServices.exe	cryptedfile.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 1480	3036	cryptedfile.exe	83
PID 3036 wrote to memory of 1480	3036	cryptedfile.exe	83

C:\Users\Admin\AppData\Local\Temp\cryptedfile.exe
"C:\Users\Admin\AppData\Local\Temp\cryptedfile.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\WindowsServices.exe
  "C:\Windows\WindowsServices.exe"
  2⤵
  - Executes dropped EXE
  PID:1480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\WindowsServices.exe

Filesize
418KB

MD5
4826f9695be9d30cc7ab41e08ef55219

SHA1
565e8c2e3933f6410b14e20c2f80e9f3436977f2

SHA256
4c426b57772aa2d212791ab542196910baf6c66120d0353b5bb2bfb6a5214717

SHA512
705d2b02b1aaac665a4420b0c78e8328ad738634c3f0390c05a0d919205eb995687ceb5b57b7a2d36c8c0ac76d10fa45563ec7c32dd2937a98c533181e4eedc7

Download Submit
memory/1480-18-0x00007FF9749F0000-0x00007FF9754B1000-memory.dmp

Filesize
10.8MB

Download
memory/1480-19-0x00007FF9749F0000-0x00007FF9754B1000-memory.dmp

Filesize
10.8MB

Download
memory/3036-0-0x000001FA4DD00000-0x000001FA4DD62000-memory.dmp

Filesize
392KB

Download
memory/3036-1-0x000001FA4E100000-0x000001FA4E110000-memory.dmp

Filesize
64KB

Download
memory/3036-2-0x000001FA4E150000-0x000001FA4E15E000-memory.dmp

Filesize
56KB

Download
memory/3036-3-0x00007FF9749F0000-0x00007FF9754B1000-memory.dmp

Filesize
10.8MB

Download
memory/3036-4-0x000001FA4E160000-0x000001FA4E170000-memory.dmp

Filesize
64KB

Download
memory/3036-17-0x00007FF9749F0000-0x00007FF9754B1000-memory.dmp

Filesize
10.8MB

Download