njrat | e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01

General

Target

e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
Size

919KB
MD5

1d62807871ef92724da791b894af6bc0
SHA1

6eba5da6e17e815dc33acf1c5f4e6c9741447eee
SHA256

e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01
SHA512

1ec35e148599834888d035d6688d4ea9ae30cb8922905ad6f6f2fbb7c01ae0cd06b04ff3cbedbf203b921a8ebb7f0dd25868abeb42feac19f948973c79295be4
SSDEEP

24576:RAHnh+eWsN3skA4RV1Hom2KXMmHapLUsQ5t:oh+ZkldoPK8Yap6t

Score

10^/10

njrat fourth#4 discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

fourth#4

C2

soft98.linkpc.net:5550

Mutex

10e93180d6481ad63a77c2b255d40864

Attributes

reg_key
10e93180d6481ad63a77c2b255d40864
splitter
|'|'|

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
1804	netsh.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Host Process for Windows Services.url	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28

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	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

description	pid	Process
Token: SeDebugPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe
Token: 33	2400	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2400	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 1640 wrote to memory of 2400	1640	e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe	28
PID 2400 wrote to memory of 1804	2400	RegAsm.exe	29
PID 2400 wrote to memory of 1804	2400	RegAsm.exe	29
PID 2400 wrote to memory of 1804	2400	RegAsm.exe	29
PID 2400 wrote to memory of 1804	2400	RegAsm.exe	29

C:\Users\Admin\AppData\Local\Temp\e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe
"C:\Users\Admin\AppData\Local\Temp\e59b3d324bf67b28f587a8503afa20d345ff267803ddeb184c025324376afe01N.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2400
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" "RegAsm.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1804

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1640-0-0x00000000000B0000-0x00000000000B1000-memory.dmp

Filesize
4KB

Download
memory/2400-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2400-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2400-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2400-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2400-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2400-10-0x00000000746A2000-0x00000000746A4000-memory.dmp

Filesize
8KB

Download
memory/2400-11-0x00000000746A2000-0x00000000746A4000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads