njrat | 4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833c

General

Target

4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe
Size

23KB
MD5

c09fddfb2808950a19e5faf5ed74b040
SHA1

188f71d05e302fb9b3fc79f4a19992b5c9a80f41
SHA256

4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833c
SHA512

bfac1a9bf515d5ff681bc76b122ca49810da83e45e5294ac6c516c16ec99ba0a50e4b6c14ff38912088eb10d02ae086b3bb6073875214bae2505f638830c0bda
SSDEEP

384:eI2SUCoQ3XgUzwsGCw5zSEZJgA6hgHpFChrV1mRvR6JZlbw8hqIusZzZ8u:RNnzdwk8Rpcnuw

Score

10^/10

njrat trg discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

TRG

C2

192.168.56.1:2587

Mutex

17d5a91fa68b94dd8c59ab2cd10978e6

Attributes

reg_key
17d5a91fa68b94dd8c59ab2cd10978e6
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
2732	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\17d5a91fa68b94dd8c59ab2cd10978e6.exe	system.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\17d5a91fa68b94dd8c59ab2cd10978e6.exe	system.exe

Executes dropped EXE 1 IoCs

pid	Process
2488	system.exe

Loads dropped DLL 1 IoCs

pid	Process
1232	4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.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-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\17d5a91fa68b94dd8c59ab2cd10978e6 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe\" .."	system.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\17d5a91fa68b94dd8c59ab2cd10978e6 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe\" .."	system.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	4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	system.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe
Token: 33	2488	system.exe
Token: SeIncBasePriorityPrivilege	2488	system.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 2488	1232	4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe	30
PID 1232 wrote to memory of 2488	1232	4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe	30
PID 1232 wrote to memory of 2488	1232	4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe	30
PID 1232 wrote to memory of 2488	1232	4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe	30
PID 2488 wrote to memory of 2732	2488	system.exe	32
PID 2488 wrote to memory of 2732	2488	system.exe	32
PID 2488 wrote to memory of 2732	2488	system.exe	32
PID 2488 wrote to memory of 2732	2488	system.exe	32

C:\Users\Admin\AppData\Local\Temp\4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe
"C:\Users\Admin\AppData\Local\Temp\4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833cN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\system.exe
  "C:\Users\Admin\AppData\Local\Temp\system.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:2488
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\system.exe" "system.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2732

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\system.exe

Filesize
23KB

MD5
c09fddfb2808950a19e5faf5ed74b040

SHA1
188f71d05e302fb9b3fc79f4a19992b5c9a80f41

SHA256
4471a1f18932ce414c3a3a47738cd5493aead19344f4d39ae03e95ed8535833c

SHA512
bfac1a9bf515d5ff681bc76b122ca49810da83e45e5294ac6c516c16ec99ba0a50e4b6c14ff38912088eb10d02ae086b3bb6073875214bae2505f638830c0bda

Download Submit
memory/1232-0-0x00000000741B1000-0x00000000741B2000-memory.dmp

Filesize
4KB

Download
memory/1232-1-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download
memory/1232-2-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download
memory/1232-10-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download
memory/1232-12-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download
memory/2488-11-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download
memory/2488-14-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download
memory/2488-15-0x00000000741B0000-0x000000007475B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads