njrat | 442b754a305ad773be58a16f2ec8440082308acc7ae274cee8e11c7aebf34488

General

Target

888.exe
Size

287KB
MD5

62ada7de61b1bc0166c0b210b69e9bb3
SHA1

c42a2cad5ecfc2c2c897161b8e875d7b3ed9eca3
SHA256

442b754a305ad773be58a16f2ec8440082308acc7ae274cee8e11c7aebf34488
SHA512

d70c0cf9a91345570b4f8a7f680cabe1ea0ef39884f25c392545b35164eb9b6adfc7c47faf87b5cd6ebfc45ab85beede5584dba4be7d9d10bafde21788265cf5
SSDEEP

3072:a+RL062QAsSdADRq6ty71wtYM77ldY7AXTp2kA:/uwH77Ppj0kA

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

1516 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:

888.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2319007114-3335580451-2147236418-1000\Control Panel\International\Geo\Nation 888.exe

pid	process
1516	netsh.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2319007114-3335580451-2147236418-1000\Control Panel\International\Geo\Nation	888.exe

Drops startup file 2 IoCs

Processes:

Chrome.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d4092da992fc1a554a7600d3355f8f5d.exe	Chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d4092da992fc1a554a7600d3355f8f5d.exe	Chrome.exe

Executes dropped EXE 1 IoCs

Processes:

Chrome.exe

pid process

3696 Chrome.exe

pid	process
3696	Chrome.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Chrome.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2319007114-3335580451-2147236418-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d4092da992fc1a554a7600d3355f8f5d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Chrome.exe\" .."	Chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d4092da992fc1a554a7600d3355f8f5d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Chrome.exe\" .."	Chrome.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:

888.exeChrome.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	888.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Chrome.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

Processes:

Chrome.exe

description	pid	process
Token: SeDebugPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe
Token: 33	3696	Chrome.exe
Token: SeIncBasePriorityPrivilege	3696	Chrome.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

888.exeChrome.exe

description	pid	process	target process
PID 3652 wrote to memory of 3696	3652	888.exe	Chrome.exe
PID 3652 wrote to memory of 3696	3652	888.exe	Chrome.exe
PID 3652 wrote to memory of 3696	3652	888.exe	Chrome.exe
PID 3696 wrote to memory of 1516	3696	Chrome.exe	netsh.exe
PID 3696 wrote to memory of 1516	3696	Chrome.exe	netsh.exe
PID 3696 wrote to memory of 1516	3696	Chrome.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\888.exe
"C:\Users\Admin\AppData\Local\Temp\888.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\Chrome.exe
  "C:\Users\Admin\AppData\Local\Temp\Chrome.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:3696
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Chrome.exe" "Chrome.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1516

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
287KB

MD5
62ada7de61b1bc0166c0b210b69e9bb3

SHA1
c42a2cad5ecfc2c2c897161b8e875d7b3ed9eca3

SHA256
442b754a305ad773be58a16f2ec8440082308acc7ae274cee8e11c7aebf34488

SHA512
d70c0cf9a91345570b4f8a7f680cabe1ea0ef39884f25c392545b35164eb9b6adfc7c47faf87b5cd6ebfc45ab85beede5584dba4be7d9d10bafde21788265cf5

Download Submit
memory/3652-0-0x0000000074CC2000-0x0000000074CC3000-memory.dmp

Filesize
4KB

Download
memory/3652-1-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/3652-2-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/3652-15-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/3696-16-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/3696-17-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/3696-18-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads