njrat | ecbb3b789818591d27f1730dfb72f6021303b7b88e19ac9c8dbf1366935e7af7

General

Target

ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe
Size

301KB
MD5

ca67fbb1b2db6af5e9b317d60b3de797
SHA1

0d306f19b7b85d4f6550099231381751dee82058
SHA256

ecbb3b789818591d27f1730dfb72f6021303b7b88e19ac9c8dbf1366935e7af7
SHA512

593bb09d27dd2b9a00b23c2a04746a494c8a649c91a522e92d1e288ca85e7104acf1abff851aa65e85b12f9bba7f1e35e37df7aa144a2c9641a42098e07318ad
SSDEEP

768:ZNmV10bf2TKtClK1rM+rMRa8NuLptHqi:ZNmVaD6KtC8u+gRJNs

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

4.tcp.ngrok.io:13648

Mutex

ef85f0aa7fc5c357737a6a24052fe823

Attributes

reg_key
ef85f0aa7fc5c357737a6a24052fe823
splitter
|'|'|

Signatures

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

Processes:

system32.exe

pid process

2040 system32.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2024 netsh.exe

pid	process
2040	system32.exe

pid	process
2024	netsh.exe

Drops startup file 2 IoCs

Processes:

system32.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ef85f0aa7fc5c357737a6a24052fe823.exe	system32.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ef85f0aa7fc5c357737a6a24052fe823.exe	system32.exe

Loads dropped DLL 1 IoCs

Processes:

ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe

pid process

1948 ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe

pid	process
1948	ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.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\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\ef85f0aa7fc5c357737a6a24052fe823 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system32.exe\" .."	system32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ef85f0aa7fc5c357737a6a24052fe823 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\system32.exe\" .."	system32.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

system32.exe

description	ioc	process
File created	C:\autorun.inf	system32.exe
File opened for modification	C:\autorun.inf	system32.exe
File created	D:\autorun.inf	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 19 IoCs

Processes:

system32.exe

description	pid	process
Token: SeDebugPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe
Token: 33	2040	system32.exe
Token: SeIncBasePriorityPrivilege	2040	system32.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exesystem32.exe

description	pid	process	target process
PID 1948 wrote to memory of 2040	1948	ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe	system32.exe
PID 1948 wrote to memory of 2040	1948	ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe	system32.exe
PID 1948 wrote to memory of 2040	1948	ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe	system32.exe
PID 1948 wrote to memory of 2040	1948	ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe	system32.exe
PID 2040 wrote to memory of 2024	2040	system32.exe	netsh.exe
PID 2040 wrote to memory of 2024	2040	system32.exe	netsh.exe
PID 2040 wrote to memory of 2024	2040	system32.exe	netsh.exe
PID 2040 wrote to memory of 2024	2040	system32.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe
"C:\Users\Admin\AppData\Local\Temp\ECBB3B789818591D27F1730DFB72F6021303B7B88E19A.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1948

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
- Drops autorun.inf file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\system32.exe" "system32.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:2024

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1

T1091

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

System Information Discovery

1

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\system32.exe
Filesize
301KB

MD5
ca67fbb1b2db6af5e9b317d60b3de797

SHA1
0d306f19b7b85d4f6550099231381751dee82058

SHA256
ecbb3b789818591d27f1730dfb72f6021303b7b88e19ac9c8dbf1366935e7af7

SHA512
593bb09d27dd2b9a00b23c2a04746a494c8a649c91a522e92d1e288ca85e7104acf1abff851aa65e85b12f9bba7f1e35e37df7aa144a2c9641a42098e07318ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\system32.exe
Filesize
301KB

MD5
ca67fbb1b2db6af5e9b317d60b3de797

SHA1
0d306f19b7b85d4f6550099231381751dee82058

SHA256
ecbb3b789818591d27f1730dfb72f6021303b7b88e19ac9c8dbf1366935e7af7

SHA512
593bb09d27dd2b9a00b23c2a04746a494c8a649c91a522e92d1e288ca85e7104acf1abff851aa65e85b12f9bba7f1e35e37df7aa144a2c9641a42098e07318ad

Download Submit
\Users\Admin\AppData\Local\Temp\system32.exe
Filesize
301KB

MD5
ca67fbb1b2db6af5e9b317d60b3de797

SHA1
0d306f19b7b85d4f6550099231381751dee82058

SHA256
ecbb3b789818591d27f1730dfb72f6021303b7b88e19ac9c8dbf1366935e7af7

SHA512
593bb09d27dd2b9a00b23c2a04746a494c8a649c91a522e92d1e288ca85e7104acf1abff851aa65e85b12f9bba7f1e35e37df7aa144a2c9641a42098e07318ad

Download Submit
memory/1948-54-0x0000000075F51000-0x0000000075F53000-memory.dmp

Filesize
8KB

Download
memory/1948-55-0x0000000073FC0000-0x000000007456B000-memory.dmp

Filesize
5.7MB

Download
memory/1948-61-0x0000000073FC0000-0x000000007456B000-memory.dmp

Filesize
5.7MB

Download
memory/2024-63-0x0000000000000000-mapping.dmp

Download
memory/2040-57-0x0000000000000000-mapping.dmp

Download
memory/2040-62-0x0000000073FC0000-0x000000007456B000-memory.dmp

Filesize
5.7MB

Download
memory/2040-65-0x0000000073FC0000-0x000000007456B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads