njrat | 1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850

General

Target

1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe
Size

23KB
MD5

01a63bd3805aa0def9d903784072b386
SHA1

0bbb04ec5a764512e1a042826fbaacfe03ade9ff
SHA256

1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850
SHA512

f00e169a6a7b60848c99e694275fdb330d031f51c8049238f487629c51063d86ab8afa4378d8e0ca7d4f03865214782bb1073620a966046d1f204bd31fcd7988
SSDEEP

384:7oWtkEwn65rgjAsGipk58D16xgXakhbZD0mRvR6JZlbw8hqIusZzZID:U7O89pbrRpcnu5

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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

Processes:

netsh.exe

pid	Process
3156	netsh.exe

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

Processes:

1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid	Process
4124	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

server.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"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

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

Processes:

netsh.exe

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

Processes:

server.exenetsh.exe1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

server.exe

description	pid	Process
Token: SeDebugPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe
Token: 33	4124	server.exe
Token: SeIncBasePriorityPrivilege	4124	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exeserver.exe

description	pid	Process	procid_target
PID 4512 wrote to memory of 4124	4512	1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe	94
PID 4512 wrote to memory of 4124	4512	1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe	94
PID 4512 wrote to memory of 4124	4512	1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe	94
PID 4124 wrote to memory of 3156	4124	server.exe	101
PID 4124 wrote to memory of 3156	4124	server.exe	101
PID 4124 wrote to memory of 3156	4124	server.exe	101

C:\Users\Admin\AppData\Local\Temp\1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe
"C:\Users\Admin\AppData\Local\Temp\1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4512
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4124
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3156

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

Query Registry

1

T1012

System Information Discovery

2

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

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

Filesize
23KB

MD5
01a63bd3805aa0def9d903784072b386

SHA1
0bbb04ec5a764512e1a042826fbaacfe03ade9ff

SHA256
1ef5eda9c6b16e272c67b76ff44a76fda8cb6ab18058fc81ebb5bb5440af7850

SHA512
f00e169a6a7b60848c99e694275fdb330d031f51c8049238f487629c51063d86ab8afa4378d8e0ca7d4f03865214782bb1073620a966046d1f204bd31fcd7988

Download Submit
memory/4124-15-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4124-16-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4124-17-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4124-18-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4124-19-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4512-0-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/4512-1-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4512-2-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4512-12-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/4512-13-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4512-14-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads