njrat | 5839b984aaa69c0df2e7803897dd293f8b3499a30ecee0734369b823c26472ee

General

Target

bTsx.exe
Size

23KB
MD5

1b8c2a6753fdc3fddc2c6eec9f6f6609
SHA1

1654029a5e9784ebba410a1476ca75c291fdf3bf
SHA256

5839b984aaa69c0df2e7803897dd293f8b3499a30ecee0734369b823c26472ee
SHA512

8d95d8e244e0c1fa251efb2f82748378403e1dc0130695766876c158f5ab2560b5100f325b4f7c8b61bfba5e9976e2fc256a85e9d7015a1b65349c10ac6c0388
SSDEEP

384:mGwz6+T4IjWZFNwXU0eiNUBdvt6lgT+lLOhXxQmRvR6JZlbw8hqIusZzZ7k:STbC81NgRpcnuT

Score

10^/10

njrat hotel evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Hotel

C2

191.233.28.7:1024

Mutex

240a11a4369c749c42e89558b6a85116

Attributes

reg_key
240a11a4369c749c42e89558b6a85116
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 2 TTPs 2 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1440	netsh.exe
2664	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	server.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	bTsx.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\240a11a4369c749c42e89558b6a85116 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\240a11a4369c749c42e89558b6a85116 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2744	PING.EXE

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2696	server.exe
Token: 33	2696	server.exe
Token: SeIncBasePriorityPrivilege	2696	server.exe
Token: 33	2696	server.exe
Token: SeIncBasePriorityPrivilege	2696	server.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2696	1992	bTsx.exe	28
PID 1992 wrote to memory of 2696	1992	bTsx.exe	28
PID 1992 wrote to memory of 2696	1992	bTsx.exe	28
PID 1992 wrote to memory of 2696	1992	bTsx.exe	28
PID 2696 wrote to memory of 2664	2696	server.exe	29
PID 2696 wrote to memory of 2664	2696	server.exe	29
PID 2696 wrote to memory of 2664	2696	server.exe	29
PID 2696 wrote to memory of 2664	2696	server.exe	29
PID 2696 wrote to memory of 1440	2696	server.exe	32
PID 2696 wrote to memory of 1440	2696	server.exe	32
PID 2696 wrote to memory of 1440	2696	server.exe	32
PID 2696 wrote to memory of 1440	2696	server.exe	32
PID 2696 wrote to memory of 1180	2696	server.exe	33
PID 2696 wrote to memory of 1180	2696	server.exe	33
PID 2696 wrote to memory of 1180	2696	server.exe	33
PID 2696 wrote to memory of 1180	2696	server.exe	33
PID 1180 wrote to memory of 2744	1180	cmd.exe	36
PID 1180 wrote to memory of 2744	1180	cmd.exe	36
PID 1180 wrote to memory of 2744	1180	cmd.exe	36
PID 1180 wrote to memory of 2744	1180	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\bTsx.exe
"C:\Users\Admin\AppData\Local\Temp\bTsx.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2664
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Modifies Windows Firewall
    PID:1440
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /c ping 0 -n 2 & del "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1180
  - - C:\Windows\SysWOW64\PING.EXE
      ping 0 -n 2
      4⤵
      Runs ping.exe
      PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
1b8c2a6753fdc3fddc2c6eec9f6f6609

SHA1
1654029a5e9784ebba410a1476ca75c291fdf3bf

SHA256
5839b984aaa69c0df2e7803897dd293f8b3499a30ecee0734369b823c26472ee

SHA512
8d95d8e244e0c1fa251efb2f82748378403e1dc0130695766876c158f5ab2560b5100f325b4f7c8b61bfba5e9976e2fc256a85e9d7015a1b65349c10ac6c0388

Download Submit
memory/1992-0-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1992-1-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/1992-2-0x0000000000870000-0x00000000008B0000-memory.dmp

Filesize
256KB

Download
memory/1992-11-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2696-10-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2696-12-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2696-13-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download
memory/2696-14-0x0000000074F20000-0x00000000754CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads