njrat | 41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924

General

Target

41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe
Size

159KB
MD5

7f9409430514a981b3099b50db0e75d6
SHA1

15cfefaa5abae77ac2f8edf433e6275b1103dba8
SHA256

41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924
SHA512

7d0476807e6d5b0136b745f54eef04bc2b8d772e08405df83e1563992c29e7348f7db63a9b7d9b7381fdb336c62cad494b628457ed829661aa2b248b13289c6f

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

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

Processes:

Selll.exe

pid process

3484 Selll.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
3484	Selll.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:

41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe

Drops startup file 2 IoCs

Processes:

Selll.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\58bd9a1507e2b6cf79ae728670550904.exe	Selll.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\58bd9a1507e2b6cf79ae728670550904.exe	Selll.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Selll.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\58bd9a1507e2b6cf79ae728670550904 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Selll.exe\" .."	Selll.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\58bd9a1507e2b6cf79ae728670550904 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Selll.exe\" .."	Selll.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 29 IoCs

Processes:

Selll.exe

description	pid	process
Token: SeDebugPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe
Token: 33	3484	Selll.exe
Token: SeIncBasePriorityPrivilege	3484	Selll.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exeSelll.exe

description	pid	process	target process
PID 4144 wrote to memory of 3484	4144	41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe	Selll.exe
PID 4144 wrote to memory of 3484	4144	41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe	Selll.exe
PID 4144 wrote to memory of 3484	4144	41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe	Selll.exe
PID 3484 wrote to memory of 2016	3484	Selll.exe	netsh.exe
PID 3484 wrote to memory of 2016	3484	Selll.exe	netsh.exe
PID 3484 wrote to memory of 2016	3484	Selll.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe
"C:\Users\Admin\AppData\Local\Temp\41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4144

C:\Users\Admin\AppData\Roaming\Selll.exe
"C:\Users\Admin\AppData\Roaming\Selll.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3484

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Selll.exe" "Selll.exe" ENABLE
3⤵
PID:2016

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\Roaming\Selll.exe
Filesize
159KB

MD5
7f9409430514a981b3099b50db0e75d6

SHA1
15cfefaa5abae77ac2f8edf433e6275b1103dba8

SHA256
41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924

SHA512
7d0476807e6d5b0136b745f54eef04bc2b8d772e08405df83e1563992c29e7348f7db63a9b7d9b7381fdb336c62cad494b628457ed829661aa2b248b13289c6f

Download Submit
C:\Users\Admin\AppData\Roaming\Selll.exe
Filesize
159KB

MD5
7f9409430514a981b3099b50db0e75d6

SHA1
15cfefaa5abae77ac2f8edf433e6275b1103dba8

SHA256
41a8b4e9dae0707c574ff06884a62ee11f6febe9f72e8a8c7c8b8c7fe25b8924

SHA512
7d0476807e6d5b0136b745f54eef04bc2b8d772e08405df83e1563992c29e7348f7db63a9b7d9b7381fdb336c62cad494b628457ed829661aa2b248b13289c6f

Download Submit
memory/2016-135-0x0000000000000000-mapping.dmp

Download
memory/3484-131-0x0000000000000000-mapping.dmp

Download
memory/3484-134-0x0000000075470000-0x0000000075A21000-memory.dmp

Filesize
5.7MB

Download
memory/4144-130-0x0000000075470000-0x0000000075A21000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads