njrat | 9af4cf4b24bdb010ba408a9c9b3f26e0c52dd6d6dd3c0a9bd12180dd9028210a

General

Target

dayum.exe
Size

23KB
MD5

aa6a3fbb8d78e21710da58d6e7b87f86
SHA1

09c8e4815c16a732d9842ef97fda4e347ad0ee27
SHA256

9af4cf4b24bdb010ba408a9c9b3f26e0c52dd6d6dd3c0a9bd12180dd9028210a
SHA512

724a7d8799acf7680ce0ea65e3902a0650aa9f2c635013d1e86a0dbd2ccba6ece5ab7981c8c71b4510d0cfa5a2e3160a722c2aa584f488e181f5f5cbd9479bb6
SSDEEP

384:6cqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZzcr:930py6vhxaRpcnuWC

Score

10^/10

njrat hacked discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

89.156.24.108:1738

Mutex

af0aa29f43924811e1101d2b844fbfd3

Attributes

reg_key
af0aa29f43924811e1101d2b844fbfd3
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

pid	Process
2844	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\af0aa29f43924811e1101d2b844fbfd3.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\af0aa29f43924811e1101d2b844fbfd3.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2540	server.exe

Loads dropped DLL 1 IoCs

pid	Process
1804	dayum.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\af0aa29f43924811e1101d2b844fbfd3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\af0aa29f43924811e1101d2b844fbfd3 = "\"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	dayum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe
Token: 33	2540	server.exe
Token: SeIncBasePriorityPrivilege	2540	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1804 wrote to memory of 2540	1804	dayum.exe	31
PID 1804 wrote to memory of 2540	1804	dayum.exe	31
PID 1804 wrote to memory of 2540	1804	dayum.exe	31
PID 1804 wrote to memory of 2540	1804	dayum.exe	31
PID 2540 wrote to memory of 2844	2540	server.exe	32
PID 2540 wrote to memory of 2844	2540	server.exe	32
PID 2540 wrote to memory of 2844	2540	server.exe	32
PID 2540 wrote to memory of 2844	2540	server.exe	32

C:\Users\Admin\AppData\Local\Temp\dayum.exe
"C:\Users\Admin\AppData\Local\Temp\dayum.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1804
- 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 use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2540
- - 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:2844

Network

No results found

89.156.24.108:1738

server.exe

152 B
3
89.156.24.108:1738

server.exe

152 B
3
89.156.24.108:1738

server.exe

152 B
3
89.156.24.108:1738

server.exe

152 B
3
89.156.24.108:1738

server.exe

152 B
3
89.156.24.108:1738

server.exe

152 B
3

No results found

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
23KB

MD5
aa6a3fbb8d78e21710da58d6e7b87f86

SHA1
09c8e4815c16a732d9842ef97fda4e347ad0ee27

SHA256
9af4cf4b24bdb010ba408a9c9b3f26e0c52dd6d6dd3c0a9bd12180dd9028210a

SHA512
724a7d8799acf7680ce0ea65e3902a0650aa9f2c635013d1e86a0dbd2ccba6ece5ab7981c8c71b4510d0cfa5a2e3160a722c2aa584f488e181f5f5cbd9479bb6

Download Submit
memory/1804-0-0x0000000074BC1000-0x0000000074BC2000-memory.dmp

Filesize
4KB

Download
memory/1804-1-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download
memory/1804-2-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download
memory/1804-11-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-10-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download
memory/2540-13-0x0000000074BC0000-0x000000007516B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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