njrat | bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

General

Target

bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe
Size

518KB
MD5

b3196f0ab1e0eeab4218b1626b796d10
SHA1

81fc429e08a7e6b4b06010a89305facf0acaef48
SHA256

bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227
SHA512

f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

Score

10^/10

njrat system persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

system

C2

bozuksaatiniz.duckdns.org:1604

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

1684 systemupdate.exe

pid	process
1684	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:

bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe

pid process

1708 bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe

pid	process
1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.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-1-5-21-2277218442-1199762539-2004043321-1000\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

1684 systemupdate.exe

pid	process
1684	systemupdate.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

systemupdate.exe

description	pid	process
Token: SeDebugPrivilege	1684	systemupdate.exe
Token: 33	1684	systemupdate.exe
Token: SeIncBasePriorityPrivilege	1684	systemupdate.exe
Token: 33	1684	systemupdate.exe
Token: SeIncBasePriorityPrivilege	1684	systemupdate.exe
Token: 33	1684	systemupdate.exe
Token: SeIncBasePriorityPrivilege	1684	systemupdate.exe
Token: 33	1684	systemupdate.exe
Token: SeIncBasePriorityPrivilege	1684	systemupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe

description	pid	process	target process
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe
PID 1708 wrote to memory of 1684	1708	bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe	systemupdate.exe

C:\Users\Admin\AppData\Local\Temp\bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe
"C:\Users\Admin\AppData\Local\Temp\bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1708

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:1684

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
518KB

MD5
b3196f0ab1e0eeab4218b1626b796d10

SHA1
81fc429e08a7e6b4b06010a89305facf0acaef48

SHA256
bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

SHA512
f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

Download Submit
C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
Filesize
518KB

MD5
b3196f0ab1e0eeab4218b1626b796d10

SHA1
81fc429e08a7e6b4b06010a89305facf0acaef48

SHA256
bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

SHA512
f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

Download Submit
\Users\Admin\AppData\Local\Temp\systemupdate.exe
Filesize
518KB

MD5
b3196f0ab1e0eeab4218b1626b796d10

SHA1
81fc429e08a7e6b4b06010a89305facf0acaef48

SHA256
bf718c38ce3220b1df02f0772365ecccfb5c3d7eb0a87e56674bbcdd0d066227

SHA512
f59a4b29bd22c03976fc5543780abf5c46339dec4969a8e2214babe062e944aa29568f2943283b70682965afe53d9547d7a2c71cfd56b9f5f994915ac554903b

Download Submit
memory/1684-59-0x0000000000000000-mapping.dmp

Download
memory/1684-62-0x0000000000FB0000-0x0000000001038000-memory.dmp

Filesize
544KB

Download
memory/1708-54-0x0000000000DA0000-0x0000000000E28000-memory.dmp

Filesize
544KB

Download
memory/1708-55-0x0000000000220000-0x0000000000226000-memory.dmp

Filesize
24KB

Download
memory/1708-56-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/1708-57-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads