njrat | 88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c

General

Target

88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe
Size

172KB
MD5

7deb2b41e5fd27715f608ceabdd9ae2b
SHA1

d4b03081a7bd074bcf67feca5cac7b72d3058de7
SHA256

88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c
SHA512

be6e040236b5e51fb45b7b5c7b42fd0ab8c5ab1b97a545e091dfcc42475a3282ab85368e2b4f9b90bde927d1f5c20ac07e3dcf9894ab5968d9bbeebf13a78b2f
SSDEEP

3072:9Scwb0MQmRobmkR7HdbsLR8cy2FnFBmy722Vd94O/ILBkMuszHM1tOW7:eRS7E8cdTBRi2Z4vCMusA142

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

127.0.0.1:5552

Mutex

279f6960ed84a752570aca7fb2dc1552

Attributes

reg_key
279f6960ed84a752570aca7fb2dc1552
splitter
|'|'|

Signatures

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

Processes:

LocalZzrUhG_cnh.exeserver.exe

pid process

624 LocalZzrUhG_cnh.exe
1772 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1384 netsh.exe
Loads dropped DLL 1 IoCs

Processes:

LocalZzrUhG_cnh.exe

pid process

624 LocalZzrUhG_cnh.exe

pid	process
624	LocalZzrUhG_cnh.exe
1772	server.exe

pid	process
1384	netsh.exe

pid	process
624	LocalZzrUhG_cnh.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

server.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\279f6960ed84a752570aca7fb2dc1552 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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 17 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe
Token: 33	1772	server.exe
Token: SeIncBasePriorityPrivilege	1772	server.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exeLocalZzrUhG_cnh.exeserver.exe

description	pid	process	target process
PID 1428 wrote to memory of 624	1428	88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe	LocalZzrUhG_cnh.exe
PID 1428 wrote to memory of 624	1428	88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe	LocalZzrUhG_cnh.exe
PID 1428 wrote to memory of 624	1428	88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe	LocalZzrUhG_cnh.exe
PID 1428 wrote to memory of 624	1428	88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe	LocalZzrUhG_cnh.exe
PID 624 wrote to memory of 1772	624	LocalZzrUhG_cnh.exe	server.exe
PID 624 wrote to memory of 1772	624	LocalZzrUhG_cnh.exe	server.exe
PID 624 wrote to memory of 1772	624	LocalZzrUhG_cnh.exe	server.exe
PID 624 wrote to memory of 1772	624	LocalZzrUhG_cnh.exe	server.exe
PID 1772 wrote to memory of 1384	1772	server.exe	netsh.exe
PID 1772 wrote to memory of 1384	1772	server.exe	netsh.exe
PID 1772 wrote to memory of 1384	1772	server.exe	netsh.exe
PID 1772 wrote to memory of 1384	1772	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe
"C:\Users\Admin\AppData\Local\Temp\88bcb388d5f63a2afa5342ba135daa675b2db66cb3c88756f825c73f1af18c6c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1428

C:\Users\Admin\AppData\LocalZzrUhG_cnh.exe
"C:\Users\Admin\AppData\LocalZzrUhG_cnh.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:624

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
4⤵
- Modifies Windows Firewall
PID:1384

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalZzrUhG_cnh.exe
Filesize
23KB

MD5
7c23813078eefe31daabe358559c859d

SHA1
ca13c407687b8281a32ea170c0cb1bc717625d41

SHA256
c563b48eca111097629b0610ed787d8fbeee23e2005030ee313290acd742940f

SHA512
f1839cc2cccde27c3db58687a60b88361ae2570cb8865343ce10ef4c6dec7185b48d158c8e5e4b1a3a4e1ae6c7d9a5e2001ee507225b0887ee23084a6dc84ae2

Download Submit
C:\Users\Admin\AppData\LocalZzrUhG_cnh.exe
Filesize
23KB

MD5
7c23813078eefe31daabe358559c859d

SHA1
ca13c407687b8281a32ea170c0cb1bc717625d41

SHA256
c563b48eca111097629b0610ed787d8fbeee23e2005030ee313290acd742940f

SHA512
f1839cc2cccde27c3db58687a60b88361ae2570cb8865343ce10ef4c6dec7185b48d158c8e5e4b1a3a4e1ae6c7d9a5e2001ee507225b0887ee23084a6dc84ae2

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
23KB

MD5
7c23813078eefe31daabe358559c859d

SHA1
ca13c407687b8281a32ea170c0cb1bc717625d41

SHA256
c563b48eca111097629b0610ed787d8fbeee23e2005030ee313290acd742940f

SHA512
f1839cc2cccde27c3db58687a60b88361ae2570cb8865343ce10ef4c6dec7185b48d158c8e5e4b1a3a4e1ae6c7d9a5e2001ee507225b0887ee23084a6dc84ae2

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe
Filesize
23KB

MD5
7c23813078eefe31daabe358559c859d

SHA1
ca13c407687b8281a32ea170c0cb1bc717625d41

SHA256
c563b48eca111097629b0610ed787d8fbeee23e2005030ee313290acd742940f

SHA512
f1839cc2cccde27c3db58687a60b88361ae2570cb8865343ce10ef4c6dec7185b48d158c8e5e4b1a3a4e1ae6c7d9a5e2001ee507225b0887ee23084a6dc84ae2

Download Submit
\Users\Admin\AppData\Local\Temp\server.exe
Filesize
23KB

MD5
7c23813078eefe31daabe358559c859d

SHA1
ca13c407687b8281a32ea170c0cb1bc717625d41

SHA256
c563b48eca111097629b0610ed787d8fbeee23e2005030ee313290acd742940f

SHA512
f1839cc2cccde27c3db58687a60b88361ae2570cb8865343ce10ef4c6dec7185b48d158c8e5e4b1a3a4e1ae6c7d9a5e2001ee507225b0887ee23084a6dc84ae2

Download Submit
memory/624-68-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/624-60-0x0000000076261000-0x0000000076263000-memory.dmp

Filesize
8KB

Download
memory/624-61-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/624-62-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/624-56-0x0000000000000000-mapping.dmp

Download
memory/1384-70-0x0000000000000000-mapping.dmp

Download
memory/1428-59-0x000000001ADA0000-0x000000001ADB0000-memory.dmp

Filesize
64KB

Download
memory/1428-55-0x000007FEFC0D1000-0x000007FEFC0D3000-memory.dmp

Filesize
8KB

Download
memory/1428-54-0x000007FEF46F0000-0x000007FEF5113000-memory.dmp

Filesize
10.1MB

Download
memory/1772-64-0x0000000000000000-mapping.dmp

Download
memory/1772-69-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/1772-72-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads