njrat | 436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5

General

Target

436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe
Size

874KB
MD5

cf19504f60a3c9807efac2d68546e341
SHA1

9b85306b753d107b6aebcb6b25b17366df295ebd
SHA256

436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5
SHA512

7b3f56c6be5db7a84b5ead01ad4a672198761df6819b4c7e3800b946ed889fbb1d8745cb653e37b856ddaedf490d1de36fbdd679a866ecc3016d1494e60f3427
SSDEEP

12288:w4lsXvtCcmVVXzzn4PJAahPl/QEdIMiVbHydEIJnJWUgaqR9Anq9MmCS:w4lavt0LkLL9IMixoEgeaqRinq9MmCS

Score

10^/10

njrat evasion persistence trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 2 IoCs

Processes:

3406.exetext.exe

pid process

1544 3406.exe
3576 text.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4876 netsh.exe

pid	process
1544	3406.exe
3576	text.exe

pid	process
4876	netsh.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe3406.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	3406.exe

Drops startup file 2 IoCs

Processes:

text.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\03bfd3da23b9ce746a9cdacb3e8222d9.exe	text.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\03bfd3da23b9ce746a9cdacb3e8222d9.exe	text.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

text.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\03bfd3da23b9ce746a9cdacb3e8222d9 = "\"C:\\Users\\Admin\\AppData\\Roaming\\text.exe\" .."	text.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\03bfd3da23b9ce746a9cdacb3e8222d9 = "\"C:\\Users\\Admin\\AppData\\Roaming\\text.exe\" .."	text.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 27 IoCs

Processes:

text.exe

pid	process
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe
3576	text.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

text.exe

description pid process

Token: SeDebugPrivilege 3576 text.exe

description	pid	process
Token: SeDebugPrivilege	3576	text.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe3406.exetext.exe

description	pid	process	target process
PID 5004 wrote to memory of 1544	5004	436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe	3406.exe
PID 5004 wrote to memory of 1544	5004	436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe	3406.exe
PID 5004 wrote to memory of 1544	5004	436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe	3406.exe
PID 1544 wrote to memory of 3576	1544	3406.exe	text.exe
PID 1544 wrote to memory of 3576	1544	3406.exe	text.exe
PID 1544 wrote to memory of 3576	1544	3406.exe	text.exe
PID 3576 wrote to memory of 4876	3576	text.exe	netsh.exe
PID 3576 wrote to memory of 4876	3576	text.exe	netsh.exe
PID 3576 wrote to memory of 4876	3576	text.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe
"C:\Users\Admin\AppData\Local\Temp\436d3357f7a10b54305f1fc83d751681a7f2ced56e8b87dc0f8d20e45ea414d5.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004

C:\Users\Admin\AppData\Local\Temp\3406\3406.exe
"C:\Users\Admin\AppData\Local\Temp\3406\3406.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1544

C:\Users\Admin\AppData\Roaming\text.exe
"C:\Users\Admin\AppData\Roaming\text.exe"
3⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3576

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\text.exe" "text.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:4876

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3406\3406.exe
Filesize
28KB

MD5
f2cb40517f296c958053e0d6752d6e66

SHA1
d90652c7f3501b898a902be6abec0b52e2abbeee

SHA256
2187b8f08b50c9e5d525007f42f8c960ecf6257d0e57d5435b2b61c02c6d9267

SHA512
7de89af47e8a4f5d60f88d156767546360715fbe268a12be57ec9227ba24cbcd64dc5a0c85526a743728de4b7f5b91b8736fc49c11a90b8520ecbf51ca8a6d59

Download Submit
C:\Users\Admin\AppData\Local\Temp\3406\3406.exe
Filesize
28KB

MD5
f2cb40517f296c958053e0d6752d6e66

SHA1
d90652c7f3501b898a902be6abec0b52e2abbeee

SHA256
2187b8f08b50c9e5d525007f42f8c960ecf6257d0e57d5435b2b61c02c6d9267

SHA512
7de89af47e8a4f5d60f88d156767546360715fbe268a12be57ec9227ba24cbcd64dc5a0c85526a743728de4b7f5b91b8736fc49c11a90b8520ecbf51ca8a6d59

Download Submit
C:\Users\Admin\AppData\Roaming\text.exe
Filesize
28KB

MD5
f2cb40517f296c958053e0d6752d6e66

SHA1
d90652c7f3501b898a902be6abec0b52e2abbeee

SHA256
2187b8f08b50c9e5d525007f42f8c960ecf6257d0e57d5435b2b61c02c6d9267

SHA512
7de89af47e8a4f5d60f88d156767546360715fbe268a12be57ec9227ba24cbcd64dc5a0c85526a743728de4b7f5b91b8736fc49c11a90b8520ecbf51ca8a6d59

Download Submit
C:\Users\Admin\AppData\Roaming\text.exe
Filesize
28KB

MD5
f2cb40517f296c958053e0d6752d6e66

SHA1
d90652c7f3501b898a902be6abec0b52e2abbeee

SHA256
2187b8f08b50c9e5d525007f42f8c960ecf6257d0e57d5435b2b61c02c6d9267

SHA512
7de89af47e8a4f5d60f88d156767546360715fbe268a12be57ec9227ba24cbcd64dc5a0c85526a743728de4b7f5b91b8736fc49c11a90b8520ecbf51ca8a6d59

Download Submit
memory/1544-132-0x0000000000000000-mapping.dmp

Download
memory/1544-135-0x0000000072F80000-0x0000000073531000-memory.dmp

Filesize
5.7MB

Download
memory/1544-139-0x0000000072F80000-0x0000000073531000-memory.dmp

Filesize
5.7MB

Download
memory/3576-136-0x0000000000000000-mapping.dmp

Download
memory/3576-141-0x0000000072F80000-0x0000000073531000-memory.dmp

Filesize
5.7MB

Download
memory/3576-142-0x0000000072F80000-0x0000000073531000-memory.dmp

Filesize
5.7MB

Download
memory/4876-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads