njrat | b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5

General

Target

b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe
Size

23KB
MD5

92ff44ccf70cce0f51bdef5df8f6af6f
SHA1

cd8745d55b3319fa7f9d8f88341db3c1fd56888e
SHA256

b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5
SHA512

6aec74aaeb5b957cf42b707775c0dee758dd5f954369628a2e3ea43ff65c09f062828e5001bc142df908ff92d599c8fb8b1dd3bb4c526508369acb72bd33178d

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

78.140.249.179:1604

Mutex

fa511642451a8067208694573cee9422

Attributes

reg_key
fa511642451a8067208694573cee9422
splitter
|'|'|

Signatures

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

Processes:

server.exe

pid process

756 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1764 netsh.exe
Loads dropped DLL 1 IoCs

Processes:

b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe

pid process

1444 b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe

pid	process
756	server.exe

pid	process
1764	netsh.exe

pid	process
1444	b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.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\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\fa511642451a8067208694573cee9422 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\fa511642451a8067208694573cee9422 = "\"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	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe
Token: 33	756	server.exe
Token: SeIncBasePriorityPrivilege	756	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exeserver.exe

description	pid	process	target process
PID 1444 wrote to memory of 756	1444	b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe	server.exe
PID 1444 wrote to memory of 756	1444	b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe	server.exe
PID 1444 wrote to memory of 756	1444	b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe	server.exe
PID 1444 wrote to memory of 756	1444	b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe	server.exe
PID 756 wrote to memory of 1764	756	server.exe	netsh.exe
PID 756 wrote to memory of 1764	756	server.exe	netsh.exe
PID 756 wrote to memory of 1764	756	server.exe	netsh.exe
PID 756 wrote to memory of 1764	756	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe
"C:\Users\Admin\AppData\Local\Temp\b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1444

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:756

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1764

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
92ff44ccf70cce0f51bdef5df8f6af6f

SHA1
cd8745d55b3319fa7f9d8f88341db3c1fd56888e

SHA256
b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5

SHA512
6aec74aaeb5b957cf42b707775c0dee758dd5f954369628a2e3ea43ff65c09f062828e5001bc142df908ff92d599c8fb8b1dd3bb4c526508369acb72bd33178d

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

MD5
92ff44ccf70cce0f51bdef5df8f6af6f

SHA1
cd8745d55b3319fa7f9d8f88341db3c1fd56888e

SHA256
b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5

SHA512
6aec74aaeb5b957cf42b707775c0dee758dd5f954369628a2e3ea43ff65c09f062828e5001bc142df908ff92d599c8fb8b1dd3bb4c526508369acb72bd33178d

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

MD5
92ff44ccf70cce0f51bdef5df8f6af6f

SHA1
cd8745d55b3319fa7f9d8f88341db3c1fd56888e

SHA256
b64f61ccdf4556f55023d9a9496dd3292483e572b73497c6ed133e1f386c1dd5

SHA512
6aec74aaeb5b957cf42b707775c0dee758dd5f954369628a2e3ea43ff65c09f062828e5001bc142df908ff92d599c8fb8b1dd3bb4c526508369acb72bd33178d

Download Submit
memory/756-57-0x0000000000000000-mapping.dmp

Download
memory/756-62-0x00000000741D0000-0x000000007477B000-memory.dmp

Filesize
5.7MB

Download
memory/756-65-0x00000000741D0000-0x000000007477B000-memory.dmp

Filesize
5.7MB

Download
memory/1444-54-0x0000000075DE1000-0x0000000075DE3000-memory.dmp

Filesize
8KB

Download
memory/1444-55-0x00000000741D0000-0x000000007477B000-memory.dmp

Filesize
5.7MB

Download
memory/1444-61-0x00000000741D0000-0x000000007477B000-memory.dmp

Filesize
5.7MB

Download
memory/1764-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads