njrat | 7559e6ca8b77400f88bf4e67208a1c32570a670068eccae9e3d226cc5471bd47

Resubmissions

20-09-2024 07:43

240920-jkdj5avhqa 10

16-09-2024 13:49

240916-q4rz7a1apg 10

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16-09-2024 13:49

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General

Target

bazaar.2020.02/Backdoor.MSIL.Agent.exe
Size

89KB
MD5

f54eea2b9a7c0259b87a5303a526d818
SHA1

641fcc96b0e288f7c5b1d0b94d6be1be2939e38e
SHA256

72fd107044ae159a7a80813fe902a132f12eedd01c63fd9e506cf05e088e7491
SHA512

36d1fb8553f454b1edbd719d4805e3d120b243960fb82ff640e52e3d3c9710a8761128079f981da011ad931c1117c0d7317f051bd4fd71a5bad93b7862dafde5
SSDEEP

384:W8aZYC9twBNdcvFaly2H0dbJo6HghcASEJqc/ZmRvR6JZlbw8hqIusZzZVPe+8tp:AY+sNKqNHnSdRpcnu+REgTK

Score

10^/10

njrat discovery 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

Processes:

netsh.exe

pid process

2408 netsh.exe

pid	process
2408	netsh.exe

Drops startup file 2 IoCs

Processes:

Backdoor.MSIL.Agent.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e4c7f2e5b82fac0d624ab661f39b28fa.exe	Backdoor.MSIL.Agent.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e4c7f2e5b82fac0d624ab661f39b28fa.exe	Backdoor.MSIL.Agent.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Backdoor.MSIL.Agent.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\e4c7f2e5b82fac0d624ab661f39b28fa = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\bazaar.2020.02\\Backdoor.MSIL.Agent.exe\" .."	Backdoor.MSIL.Agent.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\e4c7f2e5b82fac0d624ab661f39b28fa = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\bazaar.2020.02\\Backdoor.MSIL.Agent.exe\" .."	Backdoor.MSIL.Agent.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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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:

Backdoor.MSIL.Agent.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Backdoor.MSIL.Agent.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

Processes:

Backdoor.MSIL.Agent.exe

description	pid	process
Token: SeDebugPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe
Token: 33	1700	Backdoor.MSIL.Agent.exe
Token: SeIncBasePriorityPrivilege	1700	Backdoor.MSIL.Agent.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Backdoor.MSIL.Agent.exe

description	pid	process	target process
PID 1700 wrote to memory of 2408	1700	Backdoor.MSIL.Agent.exe	netsh.exe
PID 1700 wrote to memory of 2408	1700	Backdoor.MSIL.Agent.exe	netsh.exe
PID 1700 wrote to memory of 2408	1700	Backdoor.MSIL.Agent.exe	netsh.exe
PID 1700 wrote to memory of 2408	1700	Backdoor.MSIL.Agent.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\Backdoor.MSIL.Agent.exe
"C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\Backdoor.MSIL.Agent.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\bazaar.2020.02\Backdoor.MSIL.Agent.exe" "Backdoor.MSIL.Agent.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2408

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1700-0-0x0000000074831000-0x0000000074832000-memory.dmp

Filesize
4KB

Download
memory/1700-1-0x0000000074830000-0x0000000074DDB000-memory.dmp

Filesize
5.7MB

Download
memory/1700-2-0x0000000074830000-0x0000000074DDB000-memory.dmp

Filesize
5.7MB

Download
memory/1700-4-0x0000000074830000-0x0000000074DDB000-memory.dmp

Filesize
5.7MB

Download
memory/1700-5-0x0000000074830000-0x0000000074DDB000-memory.dmp

Filesize
5.7MB

Download