njrat | e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01

General

Target

e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe
Size

23KB
MD5

13bdc57fb1fa092c7d27f6015047f590
SHA1

a5804e3c8708c89c349841f60d19a0c47c6bfe38
SHA256

e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01
SHA512

e104dcbee0e2789fa47e4966aa13f4b200ed202f1b0e1638176d0beb211f86e253cbc2b0c35618c65e21a865d8c90c3c687bfe6c1132af9c40004d85ce601b64
SSDEEP

384:woWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIp:/7O89p2rRpcnun

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
2360	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:

e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid	Process
4160	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-1-5-21-493223053-2004649691-1575712786-1000\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:

e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exeserver.exenetsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.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

Processes:

server.exe

description	pid	Process
Token: SeDebugPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe
Token: 33	4160	server.exe
Token: SeIncBasePriorityPrivilege	4160	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exeserver.exe

description	pid	Process	procid_target
PID 3948 wrote to memory of 4160	3948	e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe	94
PID 3948 wrote to memory of 4160	3948	e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe	94
PID 3948 wrote to memory of 4160	3948	e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe	94
PID 4160 wrote to memory of 2360	4160	server.exe	101
PID 4160 wrote to memory of 2360	4160	server.exe	101
PID 4160 wrote to memory of 2360	4160	server.exe	101

C:\Users\Admin\AppData\Local\Temp\e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe
"C:\Users\Admin\AppData\Local\Temp\e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3948
- 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:4160
- - 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:2360

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
13bdc57fb1fa092c7d27f6015047f590

SHA1
a5804e3c8708c89c349841f60d19a0c47c6bfe38

SHA256
e33afe60edad0f20552256c3c2235fcf059cf457fcf95736ff8718d03e2aef01

SHA512
e104dcbee0e2789fa47e4966aa13f4b200ed202f1b0e1638176d0beb211f86e253cbc2b0c35618c65e21a865d8c90c3c687bfe6c1132af9c40004d85ce601b64

Download Submit
memory/3948-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/3948-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3948-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/3948-12-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/4160-13-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/4160-14-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/4160-15-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/4160-16-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads