njrat | b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e

General

Target

b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe
Size

24KB
MD5

9cf8c4a53d5e1c1646b07fd9a20f3df5
SHA1

5b6bf82acb11421e90cede493d99931b750f23cd
SHA256

b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e
SHA512

f21bcb90dfb9db76e09323152ad8bf5bee9f3a07c403e05e4f99efc557a318782a04af2140d73cef0c54f8fc9b3680b4881a2867470ff4fafd1b2f726cab9851
SSDEEP

384:HcqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZt6bR:830py6vhxaRpcnun1

Score

10^/10

njrat nesck discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

nesck

C2

gfknoux.localto.net:3435

Mutex

fda26501f9b381c7e35e3965cc3cee82

Attributes

reg_key
fda26501f9b381c7e35e3965cc3cee82
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2712	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fda26501f9b381c7e35e3965cc3cee82.exe	wsappx.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fda26501f9b381c7e35e3965cc3cee82.exe	wsappx.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	wsappx.exe

Loads dropped DLL 1 IoCs

pid	Process
2684	b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\fda26501f9b381c7e35e3965cc3cee82 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\wsappx.exe\" .."	wsappx.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\fda26501f9b381c7e35e3965cc3cee82 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\wsappx.exe\" .."	wsappx.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wsappx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe
Token: 33	2728	wsappx.exe
Token: SeIncBasePriorityPrivilege	2728	wsappx.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2728	2684	b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe	30
PID 2684 wrote to memory of 2728	2684	b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe	30
PID 2684 wrote to memory of 2728	2684	b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe	30
PID 2684 wrote to memory of 2728	2684	b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe	30
PID 2728 wrote to memory of 2712	2728	wsappx.exe	31
PID 2728 wrote to memory of 2712	2728	wsappx.exe	31
PID 2728 wrote to memory of 2712	2728	wsappx.exe	31
PID 2728 wrote to memory of 2712	2728	wsappx.exe	31

C:\Users\Admin\AppData\Local\Temp\b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe
"C:\Users\Admin\AppData\Local\Temp\b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\wsappx.exe
  "C:\Users\Admin\AppData\Local\Temp\wsappx.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\wsappx.exe" "wsappx.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2712

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
24KB

MD5
9cf8c4a53d5e1c1646b07fd9a20f3df5

SHA1
5b6bf82acb11421e90cede493d99931b750f23cd

SHA256
b88ea99a578d819000485da4b80ee871488088804481dc91698986c0c90f7c9e

SHA512
f21bcb90dfb9db76e09323152ad8bf5bee9f3a07c403e05e4f99efc557a318782a04af2140d73cef0c54f8fc9b3680b4881a2867470ff4fafd1b2f726cab9851

Download Submit
memory/2684-0-0x0000000074901000-0x0000000074902000-memory.dmp

Filesize
4KB

Download
memory/2684-1-0x0000000074900000-0x0000000074EAB000-memory.dmp

Filesize
5.7MB

Download
memory/2684-2-0x0000000074900000-0x0000000074EAB000-memory.dmp

Filesize
5.7MB

Download
memory/2684-10-0x0000000074900000-0x0000000074EAB000-memory.dmp

Filesize
5.7MB

Download
memory/2728-11-0x0000000074900000-0x0000000074EAB000-memory.dmp

Filesize
5.7MB

Download
memory/2728-12-0x0000000074900000-0x0000000074EAB000-memory.dmp

Filesize
5.7MB

Download
memory/2728-14-0x0000000074900000-0x0000000074EAB000-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