njrat | 75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1

General

Target

75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe
Size

23KB
MD5

f31428f499ac3da21d310f79f4047837
SHA1

60a7bd714ec74471958db469901c566424a8ed91
SHA256

75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1
SHA512

3991a8c4c0a44eb84035b85f5f1aa9208e289bd45abf37720c494e5e70358006f364b14fdc80784f6a27d0bb281028ec41437398ec2d5f0310af8a9f0469a927
SSDEEP

384:XoWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIvR:w7O89p2rRpcnuxR

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

pid	Process
4060	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	server.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-1-5-21-2045521122-590294423-3465680274-1000\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

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	75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe
Token: 33	2044	server.exe
Token: SeIncBasePriorityPrivilege	2044	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 2044	4196	75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe	84
PID 4196 wrote to memory of 2044	4196	75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe	84
PID 4196 wrote to memory of 2044	4196	75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe	84
PID 2044 wrote to memory of 4060	2044	server.exe	93
PID 2044 wrote to memory of 4060	2044	server.exe	93
PID 2044 wrote to memory of 4060	2044	server.exe	93

C:\Users\Admin\AppData\Local\Temp\75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe
"C:\Users\Admin\AppData\Local\Temp\75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4196
- 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:2044
- - 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:4060

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
f31428f499ac3da21d310f79f4047837

SHA1
60a7bd714ec74471958db469901c566424a8ed91

SHA256
75936e5bf3663f292b224a6f55a2d3184199e0058aa402691d4b6f081324d2d1

SHA512
3991a8c4c0a44eb84035b85f5f1aa9208e289bd45abf37720c494e5e70358006f364b14fdc80784f6a27d0bb281028ec41437398ec2d5f0310af8a9f0469a927

Download Submit
memory/2044-14-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/2044-12-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/2044-15-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/2044-16-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/4196-0-0x00000000750D2000-0x00000000750D3000-memory.dmp

Filesize
4KB

Download
memory/4196-1-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/4196-2-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download
memory/4196-13-0x00000000750D0000-0x0000000075681000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads