njrat | 9d4fa86ae4f8aa26980f7dc2d8761901643b698c50b40ddf0477bfacd8a1e9d3

General

Target

bfbae8700482430e437f19775ec2300c.exe
Size

43KB
MD5

bfbae8700482430e437f19775ec2300c
SHA1

37b64267becf1a36ed3b59e092b9c6e436669d02
SHA256

9d4fa86ae4f8aa26980f7dc2d8761901643b698c50b40ddf0477bfacd8a1e9d3
SHA512

fa70371ae55f4f77f2afd342fa8e00741c809b9e6885b98e52fa6375832d5c95bf045d2b276cad2ce6df6dd33b6782ad5163e53a4f06b350b8d61e1eb4341c08
SSDEEP

384:2ZyON3vxdW/IUyNZmd5yFivUwaMbt156lbC9D9O5UE5QzwBlpJNakkjh/TzF7pWS:sB/xIghNZk5yFivd9tilvQO+3D+L

Score

10^/10

njrat system persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

system

C2

2.tcp.eu.ngrok.io:10724

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

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

Processes:

systemupdate.exe

pid process

2044 systemupdate.exe

pid	process
2044	systemupdate.exe

Drops startup file 2 IoCs

Processes:

systemupdate.exe

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

Loads dropped DLL 1 IoCs

Processes:

bfbae8700482430e437f19775ec2300c.exe

pid process

940 bfbae8700482430e437f19775ec2300c.exe

pid	process
940	bfbae8700482430e437f19775ec2300c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

systemupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\systemupdate.exe\" .."	systemupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\systemupdate.exe\" .."	systemupdate.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: GetForegroundWindowSpam 1 IoCs

Processes:

systemupdate.exe

pid process

2044 systemupdate.exe

pid	process
2044	systemupdate.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

systemupdate.exe

description	pid	process
Token: SeDebugPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe
Token: 33	2044	systemupdate.exe
Token: SeIncBasePriorityPrivilege	2044	systemupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

bfbae8700482430e437f19775ec2300c.exe

description	pid	process	target process
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe
PID 940 wrote to memory of 2044	940	bfbae8700482430e437f19775ec2300c.exe	systemupdate.exe

C:\Users\Admin\AppData\Local\Temp\bfbae8700482430e437f19775ec2300c.exe
"C:\Users\Admin\AppData\Local\Temp\bfbae8700482430e437f19775ec2300c.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:940

C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
"C:\Users\Admin\AppData\Local\Temp\systemupdate.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
Filesize
43KB

MD5
bfbae8700482430e437f19775ec2300c

SHA1
37b64267becf1a36ed3b59e092b9c6e436669d02

SHA256
9d4fa86ae4f8aa26980f7dc2d8761901643b698c50b40ddf0477bfacd8a1e9d3

SHA512
fa70371ae55f4f77f2afd342fa8e00741c809b9e6885b98e52fa6375832d5c95bf045d2b276cad2ce6df6dd33b6782ad5163e53a4f06b350b8d61e1eb4341c08

Download Submit
C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
Filesize
43KB

MD5
bfbae8700482430e437f19775ec2300c

SHA1
37b64267becf1a36ed3b59e092b9c6e436669d02

SHA256
9d4fa86ae4f8aa26980f7dc2d8761901643b698c50b40ddf0477bfacd8a1e9d3

SHA512
fa70371ae55f4f77f2afd342fa8e00741c809b9e6885b98e52fa6375832d5c95bf045d2b276cad2ce6df6dd33b6782ad5163e53a4f06b350b8d61e1eb4341c08

Download Submit
\Users\Admin\AppData\Local\Temp\systemupdate.exe
Filesize
43KB

MD5
bfbae8700482430e437f19775ec2300c

SHA1
37b64267becf1a36ed3b59e092b9c6e436669d02

SHA256
9d4fa86ae4f8aa26980f7dc2d8761901643b698c50b40ddf0477bfacd8a1e9d3

SHA512
fa70371ae55f4f77f2afd342fa8e00741c809b9e6885b98e52fa6375832d5c95bf045d2b276cad2ce6df6dd33b6782ad5163e53a4f06b350b8d61e1eb4341c08

Download Submit
memory/940-54-0x0000000076411000-0x0000000076413000-memory.dmp

Filesize
8KB

Download
memory/940-55-0x0000000075010000-0x00000000755BB000-memory.dmp

Filesize
5.7MB

Download
memory/940-61-0x0000000075010000-0x00000000755BB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-57-0x0000000000000000-mapping.dmp

Download
memory/2044-62-0x0000000075010000-0x00000000755BB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-63-0x0000000075010000-0x00000000755BB000-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