njrat | 681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5

General

Target

681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe
Size

23KB
MD5

6be9086d115dd1b8056987f2214e9230
SHA1

60810fca5ccaab8ed9dd384b0aec27fbfa18e7a3
SHA256

681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5
SHA512

812d0d801595432b89823137e903ecb677efbd40fe4da3d1c21df12c969de4463ff2d847202715459bf2ca8295083dced18665272c08fc754f80421569f10737
SSDEEP

384:ffQeCo2zmZbQHkJeCdUwBvQ61gjuQBnB9mRvR6JZlbw8hqIusZzZEW:fA5yBVd7RpcnuM

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
4400	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	681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4d50ff0f3a4eb213da8fe301253af367.exe	dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4d50ff0f3a4eb213da8fe301253af367.exe	dllhost.exe

Executes dropped EXE 1 IoCs

pid	Process
4020	dllhost.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\4d50ff0f3a4eb213da8fe301253af367 = "\"C:\\Windows\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4d50ff0f3a4eb213da8fe301253af367 = "\"C:\\Windows\\dllhost.exe\" .."	dllhost.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\dllhost.exe	681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe
Token: 33	4020	dllhost.exe
Token: SeIncBasePriorityPrivilege	4020	dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3292 wrote to memory of 4020	3292	681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe	92
PID 3292 wrote to memory of 4020	3292	681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe	92
PID 3292 wrote to memory of 4020	3292	681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe	92
PID 4020 wrote to memory of 4400	4020	dllhost.exe	99
PID 4020 wrote to memory of 4400	4020	dllhost.exe	99
PID 4020 wrote to memory of 4400	4020	dllhost.exe	99

C:\Users\Admin\AppData\Local\Temp\681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe
"C:\Users\Admin\AppData\Local\Temp\681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5N.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Windows\dllhost.exe
  "C:\Windows\dllhost.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:4020
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\dllhost.exe" "dllhost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4400

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:\Windows\dllhost.exe

Filesize
23KB

MD5
6be9086d115dd1b8056987f2214e9230

SHA1
60810fca5ccaab8ed9dd384b0aec27fbfa18e7a3

SHA256
681138b7b667d2449e2c2da65c905dc1630e3b8ff72a14db0a62587a0364b3c5

SHA512
812d0d801595432b89823137e903ecb677efbd40fe4da3d1c21df12c969de4463ff2d847202715459bf2ca8295083dced18665272c08fc754f80421569f10737

Download Submit
memory/3292-0-0x0000000075532000-0x0000000075533000-memory.dmp

Filesize
4KB

Download
memory/3292-1-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3292-2-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/3292-13-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/4020-14-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/4020-12-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/4020-15-0x0000000075530000-0x0000000075AE1000-memory.dmp

Filesize
5.7MB

Download
memory/4020-17-0x0000000075530000-0x0000000075AE1000-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