njrat | bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749

General

Target

bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe
Size

42KB
MD5

095d3b3cd619638e071e55cfc40d4e21
SHA1

5656662e1fab912874423fe30801e51512cae2c5
SHA256

bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749
SHA512

3180b63bcbe06e6c2cc118a44ab319ec99081ef71c7f96f8ada2ffeda96f2a5976fd2e401d948c48d23014ee478550bc8071cfcb45f7b3e979b5ba97ac8c1b66
SSDEEP

768:9W05nZjZoGBWg1PF2I6FlxGPEgY6qDD2O1+PcugK:9W4wGBWg1PF2hoO5DN1+PcugK

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
2808	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\25555879cae2bf3c96038d2e8e880f3f.exe	wininttint.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\25555879cae2bf3c96038d2e8e880f3f.exe	wininttint.exe

Executes dropped EXE 1 IoCs

pid	Process
2408	wininttint.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\25555879cae2bf3c96038d2e8e880f3f = "\"C:\\Windows\\wininttint.exe\" .."	wininttint.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\25555879cae2bf3c96038d2e8e880f3f = "\"C:\\Windows\\wininttint.exe\" .."	wininttint.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\wininttint.exe	bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.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	bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wininttint.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe
Token: 33	2408	wininttint.exe
Token: SeIncBasePriorityPrivilege	2408	wininttint.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2408	2100	bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe	30
PID 2100 wrote to memory of 2408	2100	bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe	30
PID 2100 wrote to memory of 2408	2100	bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe	30
PID 2100 wrote to memory of 2408	2100	bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe	30
PID 2408 wrote to memory of 2808	2408	wininttint.exe	32
PID 2408 wrote to memory of 2808	2408	wininttint.exe	32
PID 2408 wrote to memory of 2808	2408	wininttint.exe	32
PID 2408 wrote to memory of 2808	2408	wininttint.exe	32

C:\Users\Admin\AppData\Local\Temp\bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe
"C:\Users\Admin\AppData\Local\Temp\bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\wininttint.exe
  "C:\Windows\wininttint.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:2408
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\wininttint.exe" "wininttint.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2808

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

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

C:\Windows\wininttint.exe

Filesize
42KB

MD5
095d3b3cd619638e071e55cfc40d4e21

SHA1
5656662e1fab912874423fe30801e51512cae2c5

SHA256
bd7bf434c4b7b63c2df388d1214f295bffcd68c19c68e7e8eaaafffbb4ca1749

SHA512
3180b63bcbe06e6c2cc118a44ab319ec99081ef71c7f96f8ada2ffeda96f2a5976fd2e401d948c48d23014ee478550bc8071cfcb45f7b3e979b5ba97ac8c1b66

Download Submit
memory/2100-0-0x0000000074A3E000-0x0000000074A3F000-memory.dmp

Filesize
4KB

Download
memory/2100-1-0x00000000003D0000-0x00000000003E0000-memory.dmp

Filesize
64KB

Download
memory/2100-2-0x0000000000370000-0x0000000000386000-memory.dmp

Filesize
88KB

Download
memory/2100-3-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2408-10-0x00000000002B0000-0x00000000002C0000-memory.dmp

Filesize
64KB

Download
memory/2408-11-0x00000000002F0000-0x0000000000306000-memory.dmp

Filesize
88KB

Download
memory/2408-12-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/2408-14-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/2408-15-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download
memory/2408-16-0x0000000074A30000-0x000000007511E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads