njrat | 2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac

General

Target

2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe
Size

23KB
MD5

9599799103d69a8748a0f5b9c0c98747
SHA1

c5f4df37f6938e256e3bc1b9c36588f06332348a
SHA256

2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac
SHA512

76d24936df7cc3c714a62b153a5686f298d0b99c1851d15732c9662d51540586995d4f4ed4cac73c7820b5b15ae94229eae464b93e0d849f2ce1a9a9a736acbf
SSDEEP

384:4sqS+ER6vRKXGYKRWVSujUtX9w6Dglo61Z5DVmRvR6JZlbw8hqIusZzZpFN:vf65K2Yf1jKRpcnuwN

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
2800	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe

Executes dropped EXE 1 IoCs

pid	Process
880	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\41e37e0e68c4601548177f4056648eeb = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\41e37e0e68c4601548177f4056648eeb = "\"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	2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.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	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe
Token: 33	880	server.exe
Token: SeIncBasePriorityPrivilege	880	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 880	1056	2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe	87
PID 1056 wrote to memory of 880	1056	2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe	87
PID 1056 wrote to memory of 880	1056	2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe	87
PID 880 wrote to memory of 2800	880	server.exe	90
PID 880 wrote to memory of 2800	880	server.exe	90
PID 880 wrote to memory of 2800	880	server.exe	90

C:\Users\Admin\AppData\Local\Temp\2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe
"C:\Users\Admin\AppData\Local\Temp\2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1056
- 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:880
- - 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:2800

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
9599799103d69a8748a0f5b9c0c98747

SHA1
c5f4df37f6938e256e3bc1b9c36588f06332348a

SHA256
2327cd237788481f5ee73435d37f49d02eacadbfc20ebf17b505445b6552cdac

SHA512
76d24936df7cc3c714a62b153a5686f298d0b99c1851d15732c9662d51540586995d4f4ed4cac73c7820b5b15ae94229eae464b93e0d849f2ce1a9a9a736acbf

Download Submit
memory/880-12-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/880-14-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/880-15-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/1056-0-0x0000000074C62000-0x0000000074C63000-memory.dmp

Filesize
4KB

Download
memory/1056-1-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/1056-2-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download
memory/1056-13-0x0000000074C60000-0x0000000075211000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads