njrat | 571b1ab166e73a7e33e5cf8b9f9c9e3a055b11205394a7395b7775f49dd76d66

General

Target

35329cdc7dc585785684a6ceb65278b1.exe
Size

37KB
MD5

35329cdc7dc585785684a6ceb65278b1
SHA1

f154f7b937ed9b4f6738703f3a3e9ea0350fb806
SHA256

571b1ab166e73a7e33e5cf8b9f9c9e3a055b11205394a7395b7775f49dd76d66
SHA512

3c278efd08276780388893b9d823841531ff136ce21e6e9fad2c229f14d6af92c5007113ae4ebdbfa32fb567df059816b6c84420fa19d9309bc3373e9b16db33
SSDEEP

384:unu1HCiMT3jBVbJsy8PVAbAoJvzv7QyYdSrAF+rMRTyN/0L+EcoinblneHQM3epz:uhbJP8PVsAafVY0rM+rMRa8NuICt

Score

10^/10

njrat hack evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HACK

C2

journal-serial.at.playit.gg:59826

Mutex

6b15523b39e3dae4db6cae2a109d2d5f

Attributes

reg_key
6b15523b39e3dae4db6cae2a109d2d5f
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

svhost.exe

pid process

624 svhost.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1740 netsh.exe

pid	process
624	svhost.exe

pid	process
1740	netsh.exe

Drops startup file 2 IoCs

Processes:

svhost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b15523b39e3dae4db6cae2a109d2d5f.exe	svhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b15523b39e3dae4db6cae2a109d2d5f.exe	svhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\6b15523b39e3dae4db6cae2a109d2d5f = "\"C:\\Windows\\svhost.exe\" .."	svhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\6b15523b39e3dae4db6cae2a109d2d5f = "\"C:\\Windows\\svhost.exe\" .."	svhost.exe

Drops file in Windows directory 3 IoCs

Processes:

35329cdc7dc585785684a6ceb65278b1.exesvhost.exe

description	ioc	process
File created	C:\Windows\svhost.exe	35329cdc7dc585785684a6ceb65278b1.exe
File opened for modification	C:\Windows\svhost.exe	35329cdc7dc585785684a6ceb65278b1.exe
File opened for modification	C:\Windows\svhost.exe	svhost.exe

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1548 taskkill.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

svhost.exe

pid process

624 svhost.exe
624 svhost.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

svhost.exe

pid process

624 svhost.exe

pid	process
1548	taskkill.exe

pid	process
624	svhost.exe
624	svhost.exe

pid	process
624	svhost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

Processes:

svhost.exetaskkill.exe

description	pid	process
Token: SeDebugPrivilege	624	svhost.exe
Token: SeDebugPrivilege	1548	taskkill.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe
Token: 33	624	svhost.exe
Token: SeIncBasePriorityPrivilege	624	svhost.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

35329cdc7dc585785684a6ceb65278b1.exesvhost.exe

description	pid	process	target process
PID 1516 wrote to memory of 624	1516	35329cdc7dc585785684a6ceb65278b1.exe	svhost.exe
PID 1516 wrote to memory of 624	1516	35329cdc7dc585785684a6ceb65278b1.exe	svhost.exe
PID 1516 wrote to memory of 624	1516	35329cdc7dc585785684a6ceb65278b1.exe	svhost.exe
PID 1516 wrote to memory of 624	1516	35329cdc7dc585785684a6ceb65278b1.exe	svhost.exe
PID 624 wrote to memory of 1740	624	svhost.exe	netsh.exe
PID 624 wrote to memory of 1740	624	svhost.exe	netsh.exe
PID 624 wrote to memory of 1740	624	svhost.exe	netsh.exe
PID 624 wrote to memory of 1740	624	svhost.exe	netsh.exe
PID 624 wrote to memory of 1548	624	svhost.exe	taskkill.exe
PID 624 wrote to memory of 1548	624	svhost.exe	taskkill.exe
PID 624 wrote to memory of 1548	624	svhost.exe	taskkill.exe
PID 624 wrote to memory of 1548	624	svhost.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\35329cdc7dc585785684a6ceb65278b1.exe
"C:\Users\Admin\AppData\Local\Temp\35329cdc7dc585785684a6ceb65278b1.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1516

C:\Windows\svhost.exe
"C:\Windows\svhost.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:624

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Windows\svhost.exe" "svhost.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1740

C:\Windows\SysWOW64\taskkill.exe
taskkill /F /IM explorer.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1548

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windows\svhost.exe
Filesize
37KB

MD5
35329cdc7dc585785684a6ceb65278b1

SHA1
f154f7b937ed9b4f6738703f3a3e9ea0350fb806

SHA256
571b1ab166e73a7e33e5cf8b9f9c9e3a055b11205394a7395b7775f49dd76d66

SHA512
3c278efd08276780388893b9d823841531ff136ce21e6e9fad2c229f14d6af92c5007113ae4ebdbfa32fb567df059816b6c84420fa19d9309bc3373e9b16db33

Download Submit
C:\Windows\svhost.exe
Filesize
37KB

MD5
35329cdc7dc585785684a6ceb65278b1

SHA1
f154f7b937ed9b4f6738703f3a3e9ea0350fb806

SHA256
571b1ab166e73a7e33e5cf8b9f9c9e3a055b11205394a7395b7775f49dd76d66

SHA512
3c278efd08276780388893b9d823841531ff136ce21e6e9fad2c229f14d6af92c5007113ae4ebdbfa32fb567df059816b6c84420fa19d9309bc3373e9b16db33

Download Submit
memory/624-56-0x0000000000000000-mapping.dmp

Download
memory/624-61-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/624-65-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/1516-54-0x0000000075841000-0x0000000075843000-memory.dmp

Filesize
8KB

Download
memory/1516-55-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/1516-60-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/1516-62-0x0000000074300000-0x00000000748AB000-memory.dmp

Filesize
5.7MB

Download
memory/1548-64-0x0000000000000000-mapping.dmp

Download
memory/1740-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads