njrat | b1af59115af9cab0ec6b115ff5398c9979fd6e63b162d2c31b9004bc0bbde2f7

General

Target

AD58B25945745C24819493A24B4EB139.exe
Size

1.8MB
MD5

ad58b25945745c24819493a24b4eb139
SHA1

37df601266d4e8757c0018e091838378514524e5
SHA256

b1af59115af9cab0ec6b115ff5398c9979fd6e63b162d2c31b9004bc0bbde2f7
SHA512

ac2b87c7207abe2da0f1c096c64a118001f9c29dbfed4142b35665818738e187182d68accc9eec02fef3238c87263d913d48edeb463555577e45433cabbc9c32
SSDEEP

49152:qcbzAQvx5odIOhfAizfT0WTb+w7jVViMpbG90dkw:qcbfSdIKf7LdOE2We0n

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2636 netsh.exe

pid	process
2636	netsh.exe

Drops startup file 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\325ed1ae2a47f27cdcc228f42fff7da3.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\325ed1ae2a47f27cdcc228f42fff7da3.exe	svchost.exe

Executes dropped EXE 2 IoCs

Processes:

sakura_protected.exesvchost.exe

pid process

2168 sakura_protected.exe
2832 svchost.exe
Loads dropped DLL 3 IoCs

Processes:

AD58B25945745C24819493A24B4EB139.exe

pid process

2240 AD58B25945745C24819493A24B4EB139.exe
2240 AD58B25945745C24819493A24B4EB139.exe
2240 AD58B25945745C24819493A24B4EB139.exe

pid	process
2240	AD58B25945745C24819493A24B4EB139.exe
2240	AD58B25945745C24819493A24B4EB139.exe
2240	AD58B25945745C24819493A24B4EB139.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\325ed1ae2a47f27cdcc228f42fff7da3 = "\"C:\\Windows\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\325ed1ae2a47f27cdcc228f42fff7da3 = "\"C:\\Windows\\svchost.exe\" .."	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service
T1102

Processes:

flow ioc

2 4.tcp.eu.ngrok.io
4 4.tcp.eu.ngrok.io
6 4.tcp.eu.ngrok.io

flow	ioc
2	4.tcp.eu.ngrok.io
4	4.tcp.eu.ngrok.io
6	4.tcp.eu.ngrok.io

Drops autorun.inf file 1 TTPs 5 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\autorun.inf	svchost.exe
File created	D:\autorun.inf	svchost.exe
File created	F:\autorun.inf	svchost.exe
File opened for modification	F:\autorun.inf	svchost.exe
File created	C:\autorun.inf	svchost.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 17 IoCs

Processes:

sakura_protected.exesvchost.exe

pid	process
2168	sakura_protected.exe
2168	sakura_protected.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe
2832	svchost.exe

Drops file in Windows directory 3 IoCs

Processes:

sakura_protected.exesvchost.exe

description	ioc	process
File created	C:\Windows\svchost.exe	sakura_protected.exe
File opened for modification	C:\Windows\svchost.exe	sakura_protected.exe
File opened for modification	C:\Windows\svchost.exe	svchost.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

sakura_protected.exesvchost.exe

pid process

2168 sakura_protected.exe
2832 svchost.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

svchost.exe

description	pid	process
Token: SeDebugPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe
Token: 33	2832	svchost.exe
Token: SeIncBasePriorityPrivilege	2832	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

sakura_protected.exesvchost.exe

pid process

2168 sakura_protected.exe
2832 svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

AD58B25945745C24819493A24B4EB139.exesakura_protected.exesvchost.exe

description	pid	process	target process
PID 2240 wrote to memory of 2168	2240	AD58B25945745C24819493A24B4EB139.exe	sakura_protected.exe
PID 2240 wrote to memory of 2168	2240	AD58B25945745C24819493A24B4EB139.exe	sakura_protected.exe
PID 2240 wrote to memory of 2168	2240	AD58B25945745C24819493A24B4EB139.exe	sakura_protected.exe
PID 2240 wrote to memory of 2168	2240	AD58B25945745C24819493A24B4EB139.exe	sakura_protected.exe
PID 2168 wrote to memory of 2832	2168	sakura_protected.exe	svchost.exe
PID 2168 wrote to memory of 2832	2168	sakura_protected.exe	svchost.exe
PID 2168 wrote to memory of 2832	2168	sakura_protected.exe	svchost.exe
PID 2168 wrote to memory of 2832	2168	sakura_protected.exe	svchost.exe
PID 2832 wrote to memory of 2636	2832	svchost.exe	netsh.exe
PID 2832 wrote to memory of 2636	2832	svchost.exe	netsh.exe
PID 2832 wrote to memory of 2636	2832	svchost.exe	netsh.exe
PID 2832 wrote to memory of 2636	2832	svchost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\AD58B25945745C24819493A24B4EB139.exe
"C:\Users\Admin\AppData\Local\Temp\AD58B25945745C24819493A24B4EB139.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240

C:\Users\Admin\AppData\Local\Temp\sakura_protected.exe
"C:\Users\Admin\AppData\Local\Temp\sakura_protected.exe"
2⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2168

C:\Windows\svchost.exe
"C:\Windows\svchost.exe"
3⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2832

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Windows\svchost.exe" "svchost.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\sakura_protected.exe
Filesize
1.1MB

MD5
ecb25b8adf7f999fba6245d362153fdb

SHA1
b406b28ea8c548d9456704075f0eca1cae069d65

SHA256
ebe160919d1646d96694de6a38b7ac570f1827dedb163174bee9253a7475dd54

SHA512
168d62846ff9416c150e2606843b48353afba8dd4096a0b020d3fdf04b06b61d9ebd932c81474d75cd8ef27adbb6e68aa09357b552bef764fc4c3a4eef6ac9d0

Download Submit
memory/2168-37-0x0000000000EA0000-0x0000000001216000-memory.dmp

Filesize
3.5MB

Download
memory/2168-27-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2168-28-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2168-29-0x0000000003220000-0x0000000003260000-memory.dmp

Filesize
256KB

Download
memory/2168-39-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2240-18-0x0000000003E90000-0x0000000004206000-memory.dmp

Filesize
3.5MB

Download
memory/2832-38-0x0000000001230000-0x00000000015A6000-memory.dmp

Filesize
3.5MB

Download
memory/2832-40-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2832-41-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2832-42-0x00000000010E0000-0x0000000001120000-memory.dmp

Filesize
256KB

Download
memory/2832-54-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2832-55-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads