njrat | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

Resubmissions

04-12-2024 19:31

241204-x8wmhaxmcv 10

04-12-2024 11:47

04-12-2024 11:40

04-12-2024 11:35

03-12-2024 19:23

03-12-2024 16:27

Analysis

max time kernel
299s
max time network
308s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
04-12-2024 11:40

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General

Target

gjMEi6eG.exe
Size

23KB
MD5

9ab1a677fb73e7c5a41d151c4c21f69e
SHA1

10219ed34a3f76ca7fe30eb27a1a78d83c9ada37
SHA256

2027c43348230de4a40e7ec590d692f744f36cdb13eb65f599983158e920cdb9
SHA512

0c9f2e1555c36a3742a2ec604faf9a89bfd856946024596912bc116ad7f4fd15ee67969704956d30d70e7b6cb3a626168c309add57469adb03d389df0596f3c5
SSDEEP

384:nY324bcgPiJLQrfARGSRUJsbY6ZgvSMBD3t8mRvR6JZlbw8hqIusZzZtd:wL2s+tRyRpcnuQ

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

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
2248	netsh.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid	Process
3592	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

server.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2253712635-4068079004-3870069674-1000\Software\Microsoft\Windows\CurrentVersion\Run\c6c84eeabbf10b049aa4efdb90558a88 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\c6c84eeabbf10b049aa4efdb90558a88 = "\"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

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:

gjMEi6eG.exeserver.exenetsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gjMEi6eG.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 64 IoCs

Processes:

server.exe

description	pid	Process
Token: SeDebugPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe
Token: SeIncBasePriorityPrivilege	3592	server.exe
Token: 33	3592	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

gjMEi6eG.exeserver.exe

description	pid	Process	procid_target
PID 4376 wrote to memory of 3592	4376	gjMEi6eG.exe	77
PID 4376 wrote to memory of 3592	4376	gjMEi6eG.exe	77
PID 4376 wrote to memory of 3592	4376	gjMEi6eG.exe	77
PID 3592 wrote to memory of 2248	3592	server.exe	78
PID 3592 wrote to memory of 2248	3592	server.exe	78
PID 3592 wrote to memory of 2248	3592	server.exe	78

C:\Users\Admin\AppData\Local\Temp\gjMEi6eG.exe
"C:\Users\Admin\AppData\Local\Temp\gjMEi6eG.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3592
- - 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:2248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
9ab1a677fb73e7c5a41d151c4c21f69e

SHA1
10219ed34a3f76ca7fe30eb27a1a78d83c9ada37

SHA256
2027c43348230de4a40e7ec590d692f744f36cdb13eb65f599983158e920cdb9

SHA512
0c9f2e1555c36a3742a2ec604faf9a89bfd856946024596912bc116ad7f4fd15ee67969704956d30d70e7b6cb3a626168c309add57469adb03d389df0596f3c5

Download Submit
memory/3592-13-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/3592-14-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/3592-15-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/3592-16-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-0-0x0000000074EF1000-0x0000000074EF2000-memory.dmp

Filesize
4KB

Download
memory/4376-1-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-2-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/4376-12-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download