njrat | 4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617

General

Target

4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
Size

552KB
MD5

391982de84741e4f4f663370774cda90
SHA1

97719efa9c451da3cfc7c5b4292f541589b92207
SHA256

4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617
SHA512

b306eed58e4c0a02bec466029179e76629014d31f6de1fc809ef862609e719eae82a5e698fca43ba948a4df24bf779612c9294775c3941afcc711ff67a4ac2a7
SSDEEP

12288:R32kYn9YFZBsws0rwfQpP9p/yFUk6l6X3cWCauQWannR8fO:RGk69IS0rw4pP9p416QMaBnRCO

Score

10^/10

njrat oct discovery trojan

Malware Config

Extracted

Family

njrat

Version

0.7.3

Botnet

OCT

C2

film.royalprop.trade:8109

Mutex

update.exe

Attributes

reg_key
update.exe
splitter
0987

Signatures

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

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sftp.url	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe

AutoIT Executable 5 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/728-1-0x0000000000400000-0x0000000000569000-memory.dmp	autoit_exe
behavioral2/memory/728-2-0x0000000000400000-0x0000000000569000-memory.dmp	autoit_exe
behavioral2/memory/728-3-0x0000000000400000-0x0000000000569000-memory.dmp	autoit_exe
behavioral2/memory/728-4-0x0000000000400000-0x0000000000569000-memory.dmp	autoit_exe
behavioral2/memory/728-17-0x0000000000400000-0x0000000000569000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 728 set thread context of 1772	728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe	101

System Location Discovery: System Language Discovery 1 TTPs 2 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	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe
Token: 33	1772	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1772	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 728 wrote to memory of 1772	728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe	101
PID 728 wrote to memory of 1772	728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe	101
PID 728 wrote to memory of 1772	728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe	101
PID 728 wrote to memory of 1772	728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe	101
PID 728 wrote to memory of 1772	728	4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe	101

C:\Users\Admin\AppData\Local\Temp\4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe
"C:\Users\Admin\AppData\Local\Temp\4efef6b7867e96d28b5f0e776f183fba83f3eb21f240186a569b21e110296617N.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:728
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/728-17-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/728-1-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/728-2-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/728-3-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/728-4-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/728-10-0x0000000000A90000-0x0000000000A91000-memory.dmp

Filesize
4KB

Download
memory/728-0-0x0000000000400000-0x0000000000569000-memory.dmp

Filesize
1.4MB

Download
memory/1772-11-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1772-18-0x0000000074F42000-0x0000000074F43000-memory.dmp

Filesize
4KB

Download
memory/1772-19-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1772-20-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1772-21-0x0000000074F42000-0x0000000074F43000-memory.dmp

Filesize
4KB

Download
memory/1772-22-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download
memory/1772-23-0x0000000074F40000-0x00000000754F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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