njrat | 31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe

General

Target

31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe
Size

28KB
MD5

2757e4e46daf6e6c504b5f8dcbec1248
SHA1

3d472f3c09e05ff15f56e0ca57de6005299c35fb
SHA256

31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe
SHA512

5bd434b960c8f391f603d11d07f604dddbbaab6cf3f3ff5bd3e1674ffdff63d40c05eed1b852c0d97b86a945f2119c32494a09c39263f404967b7f0db944853c
SSDEEP

768:Yo1xhUXD7dl9tAgjFVIe+A90CC0y7Wt0LiJOb0KU:Yo1xhCD7dl9tAgjFVIe+A9BC0ayOb0KU

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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
2064	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bead739c11b6815884fb1a13a48ced96.exe	Server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bead739c11b6815884fb1a13a48ced96.exe	Server.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	Server.exe

Loads dropped DLL 1 IoCs

pid	Process
1792	31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\bead739c11b6815884fb1a13a48ced96 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Server.exe\" .."	Server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\bead739c11b6815884fb1a13a48ced96 = "\"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

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	31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe
2756	Server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	Server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2756	1792	31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe	30
PID 1792 wrote to memory of 2756	1792	31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe	30
PID 1792 wrote to memory of 2756	1792	31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe	30
PID 1792 wrote to memory of 2756	1792	31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe	30
PID 2756 wrote to memory of 2064	2756	Server.exe	31
PID 2756 wrote to memory of 2064	2756	Server.exe	31
PID 2756 wrote to memory of 2064	2756	Server.exe	31
PID 2756 wrote to memory of 2064	2756	Server.exe	31

C:\Users\Admin\AppData\Local\Temp\31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe
"C:\Users\Admin\AppData\Local\Temp\31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  "C:\Users\Admin\AppData\Local\Temp\Server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2756
- - 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:2064

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

\Users\Admin\AppData\Local\Temp\Server.exe

Filesize
28KB

MD5
2757e4e46daf6e6c504b5f8dcbec1248

SHA1
3d472f3c09e05ff15f56e0ca57de6005299c35fb

SHA256
31f24a687e78048dd69114d16e9fb8d4dac18f64bf355c07f02c5613a0276efe

SHA512
5bd434b960c8f391f603d11d07f604dddbbaab6cf3f3ff5bd3e1674ffdff63d40c05eed1b852c0d97b86a945f2119c32494a09c39263f404967b7f0db944853c

Download Submit
memory/1792-0-0x0000000074621000-0x0000000074622000-memory.dmp

Filesize
4KB

Download
memory/1792-1-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download
memory/1792-3-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download
memory/1792-10-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-11-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-12-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-14-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download
memory/2756-15-0x0000000074620000-0x0000000074BCB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads