njrat | af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7

General

Target

af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe
Size

23KB
MD5

37ebb53c301010cad97d1e22c9212580
SHA1

3c5942175a1625b178c2a376be11c9196ec6eb50
SHA256

af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7
SHA512

40253880d995afa93ac5df2200972a6b90329f0b908e61e153287af6a5574b37c712ee248197886a352f8aba8aa7e99a463365605b1583c826cd8cf4133101c7
SSDEEP

384:oQ+ILgIbOprgPsUOSU0kB1kd6dg7GYh/JomRvR6JZlbw8hqIusZzZb0:TLL6MVU0NRpcnuL

Score

10^/10

njrat yahoo discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

yahoo

C2

127.0.0.1:5552

Mutex

c20dc55207710c29d1db3ad3160138a1

Attributes

reg_key
c20dc55207710c29d1db3ad3160138a1
splitter
|'|'|

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

Processes:

netsh.exe

pid process

2808 netsh.exe
Executes dropped EXE 1 IoCs

Processes:

yahoo.exe

pid process

2184 yahoo.exe
Loads dropped DLL 1 IoCs

Processes:

af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe

pid process

1444 af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2808	netsh.exe

pid	process
2184	yahoo.exe

pid	process
1444	af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe

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

Processes:

netsh.exe

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

Processes:

af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exeyahoo.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yahoo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

Processes:

yahoo.exe

description	pid	process
Token: SeDebugPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe
Token: 33	2184	yahoo.exe
Token: SeIncBasePriorityPrivilege	2184	yahoo.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exeyahoo.exe

description	pid	process	target process
PID 1444 wrote to memory of 2184	1444	af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe	yahoo.exe
PID 1444 wrote to memory of 2184	1444	af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe	yahoo.exe
PID 1444 wrote to memory of 2184	1444	af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe	yahoo.exe
PID 1444 wrote to memory of 2184	1444	af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe	yahoo.exe
PID 2184 wrote to memory of 2808	2184	yahoo.exe	netsh.exe
PID 2184 wrote to memory of 2808	2184	yahoo.exe	netsh.exe
PID 2184 wrote to memory of 2808	2184	yahoo.exe	netsh.exe
PID 2184 wrote to memory of 2808	2184	yahoo.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe
"C:\Users\Admin\AppData\Local\Temp\af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Users\Admin\AppData\Local\Temp\yahoo.exe
  "C:\Users\Admin\AppData\Local\Temp\yahoo.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\yahoo.exe" "yahoo.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

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

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

Filesize
23KB

MD5
37ebb53c301010cad97d1e22c9212580

SHA1
3c5942175a1625b178c2a376be11c9196ec6eb50

SHA256
af5e0b59e47ed80a554ab468a441af3aef82d04ca2958d5515228894f11ed2e7

SHA512
40253880d995afa93ac5df2200972a6b90329f0b908e61e153287af6a5574b37c712ee248197886a352f8aba8aa7e99a463365605b1583c826cd8cf4133101c7

Download Submit
memory/1444-0-0x00000000744A1000-0x00000000744A2000-memory.dmp

Filesize
4KB

Download
memory/1444-1-0x00000000744A0000-0x0000000074A4B000-memory.dmp

Filesize
5.7MB

Download
memory/1444-2-0x00000000744A0000-0x0000000074A4B000-memory.dmp

Filesize
5.7MB

Download
memory/1444-10-0x00000000744A0000-0x0000000074A4B000-memory.dmp

Filesize
5.7MB

Download
memory/2184-11-0x00000000744A0000-0x0000000074A4B000-memory.dmp

Filesize
5.7MB

Download
memory/2184-12-0x00000000744A0000-0x0000000074A4B000-memory.dmp

Filesize
5.7MB

Download
memory/2184-13-0x00000000744A0000-0x0000000074A4B000-memory.dmp

Filesize
5.7MB

Download
memory/2184-14-0x00000000744A0000-0x0000000074A4B000-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