njrat | 5ff804f9b9f7892de24c3cf00fb8e8961f1ee6c8b4764b4a99871b382e316118

General

Target
Server.exe
Size 32KB
Sample260429-lev84ad14q
SHA256 5ff804f9b9f7892de24c3cf00fb8e8961f1ee6c8b4764b4a99871b382e316118
MD5 89f7c8a719f4a82ce17091824082d420
SHA1 b81a990e9ef4a29a17fcc5e4e7f30707d6be23ec
SHA512 08278924a32972ac445b2f10d8f8c6002b32531733e252e9a43dc89967e26f2073951f8fb9ebb00ebcae887d2f9f94d94a76774bc3afcf21348e7bc23888e092
SSDEEP 384:1U005Q4kW8+I4YZsi+t22CA4GZstFPI8eT+C4lDUodg9TdFpyFEIGsJjwE7UMcrE:i3Lzt2AzchaouDbEEIGfRXx+f
TLSH
T1C2E2194CB6E38154D07D44B785A6E3211774E16B5723E26FCEE968E22F671CC8A8CDE0
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery njrat persistence privilege_escalation trojan

Malware Config

Signatures

Family: njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2924	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-1-5-21-312252282-3884318443-358092420-1000\Control Panel\International\Geo\Nation	Server.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	System32.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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	System32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe
Token: 33	1596	System32.exe
Token: SeIncBasePriorityPrivilege	1596	System32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 616 wrote to memory of 1596	616	Server.exe	85
PID 1596 wrote to memory of 2924	1596	System32.exe	86

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:616
- C:\Users\Admin\AppData\Local\Temp\System32.exe
  "C:\Users\Admin\AppData\Local\Temp\System32.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System32.exe" "System32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2924

Network

MITRE ATT&CK Enterprise v16

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

System32.exe

Path C:\Users\Admin\AppData\Local\Temp\System32.exe
Size 32KB
SHA256 5ff804f9b9f7892de24c3cf00fb8e8961f1ee6c8b4764b4a99871b382e316118
MD5 89f7c8a719f4a82ce17091824082d420
SHA1 b81a990e9ef4a29a17fcc5e4e7f30707d6be23ec
SHA512 08278924a32972ac445b2f10d8f8c6002b32531733e252e9a43dc89967e26f2073951f8fb9ebb00ebcae887d2f9f94d94a76774bc3afcf21348e7bc23888e092
SSDEEP 384:1U005Q4kW8+I4YZsi+t22CA4GZstFPI8eT+C4lDUodg9TdFpyFEIGsJjwE7UMcrE:i3Lzt2AzchaouDbEEIGfRXx+f
TLSH
T1C2E2194CB6E38154D07D44B785A6E3211774E16B5723E26FCEE968E22F671CC8A8CDE0
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/616-0-0x0000000000C90000-0x0000000000CA0000-memory.dmp

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memory/616-1-0x0000000074882000-0x0000000074884000-memory.dmp

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memory/1596-11-0x0000000074880000-0x0000000074E31000-memory.dmp

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memory/1596-12-0x0000000074880000-0x0000000074E31000-memory.dmp

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memory/1596-13-0x0000000074880000-0x0000000074E31000-memory.dmp

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memory/1596-14-0x0000000074880000-0x0000000074E31000-memory.dmp

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memory/1596-15-0x0000000074880000-0x0000000074E31000-memory.dmp

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memory/1596-16-0x0000000074880000-0x0000000074E31000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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