njrat | 3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310

General

Target

3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe
Size

23KB
MD5

85f3632ec0d68eb2f86ef3296035fe20
SHA1

3d92844f5ee15a1bdf666e7319188cc259454148
SHA256

3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310
SHA512

b65ff6a7982b70ee00bca2bf716ce4ccbdad5df8f34edb3727c9eb79cb30163ec8f5c3ae193a6165460c6173f30930bbcf382e101d539779a160daaee7c6ee03
SSDEEP

384:XMK6b2GZsx/Yr1+liORH1kcPFQ6Lg9gSOYRr9mRvR6JZlbw8hqIusZzZIyk:wb9glF51LRpcnu9

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
4880	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe

Executes dropped EXE 1 IoCs

pid	Process
4308	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	3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.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	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe
Token: 33	4308	server.exe
Token: SeIncBasePriorityPrivilege	4308	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 4308	5004	3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe	82
PID 5004 wrote to memory of 4308	5004	3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe	82
PID 5004 wrote to memory of 4308	5004	3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe	82
PID 4308 wrote to memory of 4880	4308	server.exe	87
PID 4308 wrote to memory of 4880	4308	server.exe	87
PID 4308 wrote to memory of 4880	4308	server.exe	87

C:\Users\Admin\AppData\Local\Temp\3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe
"C:\Users\Admin\AppData\Local\Temp\3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4308
- - 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:4880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

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

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

1

T1562.004

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
85f3632ec0d68eb2f86ef3296035fe20

SHA1
3d92844f5ee15a1bdf666e7319188cc259454148

SHA256
3b4ef31c1496f462a72de7f8328a6d6d8b735e95105365d995c0d67762937310

SHA512
b65ff6a7982b70ee00bca2bf716ce4ccbdad5df8f34edb3727c9eb79cb30163ec8f5c3ae193a6165460c6173f30930bbcf382e101d539779a160daaee7c6ee03

Download Submit
memory/4308-13-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4308-14-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/4308-15-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/5004-0-0x0000000074F12000-0x0000000074F13000-memory.dmp

Filesize
4KB

Download
memory/5004-1-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/5004-2-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download
memory/5004-12-0x0000000074F10000-0x00000000754C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads