njrat | 1bdd4111884c46fd0d6fdba1d924d9ff4b13121cc2d0a26ca3581a41643a128d

General

Target
Server.exe
Size 32KB
Sample260429-mcbmcaat6v
SHA256 1bdd4111884c46fd0d6fdba1d924d9ff4b13121cc2d0a26ca3581a41643a128d
MD5 6fe3c07dbdf241178c95ebd5dad042c1
SHA1 703da5606321531de66edf2378c2d9b4c78de1ca
SHA512 96a42dd6a3da7722410c93a3da217b81ea68901dcb38951666bdb58930858f5dded1875731109c5404ef3e2917f28c2c624a616bebbfccf7133a3d811f63563d
SSDEEP 384:yU005Q4kW8+I4YZsi+t22CA4GZstFPI8eT+C4lDUodg9TdFpyFEIGsJjwE7UMcr2:t3Lzt2AzchaouDbEEIGfRXW+f
TLSH
T160E2084CB6E38154D07D84B785A6E3211774E1675723E26FCEE968E22F671CC8A8CDE0
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
4196	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	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	System32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe
Token: 33	4204	System32.exe
Token: SeIncBasePriorityPrivilege	4204	System32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1144 wrote to memory of 4204	1144	Server.exe	79
PID 4204 wrote to memory of 4196	4204	System32.exe	80

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1144
- 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:4204
- - 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:4196

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

System Information Discovery

1

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 1bdd4111884c46fd0d6fdba1d924d9ff4b13121cc2d0a26ca3581a41643a128d
MD5 6fe3c07dbdf241178c95ebd5dad042c1
SHA1 703da5606321531de66edf2378c2d9b4c78de1ca
SHA512 96a42dd6a3da7722410c93a3da217b81ea68901dcb38951666bdb58930858f5dded1875731109c5404ef3e2917f28c2c624a616bebbfccf7133a3d811f63563d
SSDEEP 384:yU005Q4kW8+I4YZsi+t22CA4GZstFPI8eT+C4lDUodg9TdFpyFEIGsJjwE7UMcr2:t3Lzt2AzchaouDbEEIGfRXW+f
TLSH
T160E2084CB6E38154D07D84B785A6E3211774E1675723E26FCEE968E22F671CC8A8CDE0
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1144-0-0x00000000750A1000-0x00000000750A2000-memory.dmp

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memory/1144-1-0x00000000750A0000-0x0000000075651000-memory.dmp

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memory/1144-12-0x00000000750A0000-0x0000000075651000-memory.dmp

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memory/4204-11-0x00000000750A0000-0x0000000075651000-memory.dmp

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memory/4204-13-0x00000000750A0000-0x0000000075651000-memory.dmp

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memory/4204-14-0x00000000750A0000-0x0000000075651000-memory.dmp

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memory/4204-15-0x00000000750A0000-0x0000000075651000-memory.dmp

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memory/4204-16-0x00000000750A0000-0x0000000075651000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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