njrat | 8c0f3740dcc4c715f0acb1a165c9b8acdc2798df38334d608f045c0de112967a

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
23/06/2024, 02:50

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General

Target
905aea6d75716018cd08891025ae9d26.exe
Size 208KB
Sample240623-dbkdesxblf
SHA256 8c0f3740dcc4c715f0acb1a165c9b8acdc2798df38334d608f045c0de112967a
MD5 905aea6d75716018cd08891025ae9d26
SHA1 50a9b9bfe3a66cbc603a77abed77858229a0a40f
SHA512 16327d8f81749d4cc4a9b9596457ed92d679715b95cbd59daaff06cb2f0c5632ee5cf44d85a7810714fe74a79762cd7aa8bf1e4fd98ee5f920e353646d96d89c
SSDEEP 6144:xcyHiTVVmVVV8VVNVVVcVVVxVVVPVVlVVVRVVVtVVWV60jVLVVOVVUVZVVVVVjV6:A
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat evasion persistence privilege_escalation trojan

Malware Config

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
4848	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f7e05da2fcd886a89792ee580d9e5aec.exe	905aea6d75716018cd08891025ae9d26.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f7e05da2fcd886a89792ee580d9e5aec.exe	905aea6d75716018cd08891025ae9d26.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-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f7e05da2fcd886a89792ee580d9e5aec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\905aea6d75716018cd08891025ae9d26.exe\" .."	905aea6d75716018cd08891025ae9d26.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\f7e05da2fcd886a89792ee580d9e5aec = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\905aea6d75716018cd08891025ae9d26.exe\" .."	905aea6d75716018cd08891025ae9d26.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

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

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe
Token: 33	4992	905aea6d75716018cd08891025ae9d26.exe
Token: SeIncBasePriorityPrivilege	4992	905aea6d75716018cd08891025ae9d26.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 4848	4992	905aea6d75716018cd08891025ae9d26.exe	92
PID 4992 wrote to memory of 4848	4992	905aea6d75716018cd08891025ae9d26.exe	92
PID 4992 wrote to memory of 4848	4992	905aea6d75716018cd08891025ae9d26.exe	92

C:\Users\Admin\AppData\Local\Temp\905aea6d75716018cd08891025ae9d26.exe
"C:\Users\Admin\AppData\Local\Temp\905aea6d75716018cd08891025ae9d26.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\905aea6d75716018cd08891025ae9d26.exe" "905aea6d75716018cd08891025ae9d26.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  PID:4848