njrat | b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898

General

Target

b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe
Size

32KB
MD5

e2e21e957f11bdeece53d32ef7a87200
SHA1

163e343f1145112c70b9dfb769e1edd95aeea727
SHA256

b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898
SHA512

dd3befe3490377cb89a56b7096f9c0cf77632656940b0c8153d50b28d1e030fcd624a1ecb5b99e9248ef3f086505753778997fdf7b7f15d3855279781a9154da

Score

10^/10

njrat hacked by hidden person evasion persistence trojan

Malware Config

Extracted

Family

njrat

Botnet

Hacked By HiDDen PerSOn

Mutex

4bdd702755ab14d7cb87b9060eac7a2c

Attributes

reg_key
4bdd702755ab14d7cb87b9060eac7a2c

Signatures

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

Processes:

System32.exe

pid process

1628 System32.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
1628	System32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe

Drops startup file 2 IoCs

Processes:

System32.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4bdd702755ab14d7cb87b9060eac7a2c.exe	System32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4bdd702755ab14d7cb87b9060eac7a2c.exe	System32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

System32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4bdd702755ab14d7cb87b9060eac7a2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System32.exe\" .."	System32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4bdd702755ab14d7cb87b9060eac7a2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System32.exe\" .."	System32.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 11 IoCs

Processes:

System32.exe

description	pid	process
Token: SeDebugPrivilege	1628	System32.exe
Token: 33	1628	System32.exe
Token: SeIncBasePriorityPrivilege	1628	System32.exe
Token: 33	1628	System32.exe
Token: SeIncBasePriorityPrivilege	1628	System32.exe
Token: 33	1628	System32.exe
Token: SeIncBasePriorityPrivilege	1628	System32.exe
Token: 33	1628	System32.exe
Token: SeIncBasePriorityPrivilege	1628	System32.exe
Token: 33	1628	System32.exe
Token: SeIncBasePriorityPrivilege	1628	System32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exeSystem32.exe

description	pid	process	target process
PID 1232 wrote to memory of 1628	1232	b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe	System32.exe
PID 1232 wrote to memory of 1628	1232	b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe	System32.exe
PID 1232 wrote to memory of 1628	1232	b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe	System32.exe
PID 1628 wrote to memory of 424	1628	System32.exe	netsh.exe
PID 1628 wrote to memory of 424	1628	System32.exe	netsh.exe
PID 1628 wrote to memory of 424	1628	System32.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe
"C:\Users\Admin\AppData\Local\Temp\b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1232

C:\Users\Admin\AppData\Local\Temp\System32.exe
"C:\Users\Admin\AppData\Local\Temp\System32.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System32.exe" "System32.exe" ENABLE
3⤵
PID:424

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\System32.exe
Filesize
32KB

MD5
e2e21e957f11bdeece53d32ef7a87200

SHA1
163e343f1145112c70b9dfb769e1edd95aeea727

SHA256
b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898

SHA512
dd3befe3490377cb89a56b7096f9c0cf77632656940b0c8153d50b28d1e030fcd624a1ecb5b99e9248ef3f086505753778997fdf7b7f15d3855279781a9154da

Download Submit
C:\Users\Admin\AppData\Local\Temp\System32.exe
Filesize
32KB

MD5
e2e21e957f11bdeece53d32ef7a87200

SHA1
163e343f1145112c70b9dfb769e1edd95aeea727

SHA256
b39589d6427aa2666b54f1b09cfeae25fd62c135293688cc91e854ac3097a898

SHA512
dd3befe3490377cb89a56b7096f9c0cf77632656940b0c8153d50b28d1e030fcd624a1ecb5b99e9248ef3f086505753778997fdf7b7f15d3855279781a9154da

Download Submit
memory/424-135-0x0000000000000000-mapping.dmp

Download
memory/1232-130-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download
memory/1628-131-0x0000000000000000-mapping.dmp

Download
memory/1628-134-0x0000000074FE0000-0x0000000075591000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads