njrat | 203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b

General

Target

203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe
Size

23KB
MD5

ab076fa27a284d29152b8273a82b95b4
SHA1

4bfa210f44c47050b0ff92ca7c76a4225edb9150
SHA256

203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b
SHA512

38940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f
SSDEEP

384:ScqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZYqA:F30py6vhxaRpcnuHb

Score

10^/10

njrat bot evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Bot

C2

smuktnet.ddns.net:5552

Mutex

ae4562ec1d4d0afd82039ca2517bd6df

Attributes

reg_key
ae4562ec1d4d0afd82039ca2517bd6df
splitter
|'|'|

Signatures

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

Processes:

server.exe

pid process

5052 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

5040 netsh.exe

pid	process
5052	server.exe

pid	process
5040	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ae4562ec1d4d0afd82039ca2517bd6df = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ae4562ec1d4d0afd82039ca2517bd6df = "\"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 29 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe
Token: 33	5052	server.exe
Token: SeIncBasePriorityPrivilege	5052	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exeserver.exe

description	pid	process	target process
PID 1092 wrote to memory of 5052	1092	203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe	server.exe
PID 1092 wrote to memory of 5052	1092	203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe	server.exe
PID 1092 wrote to memory of 5052	1092	203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe	server.exe
PID 5052 wrote to memory of 5040	5052	server.exe	netsh.exe
PID 5052 wrote to memory of 5040	5052	server.exe	netsh.exe
PID 5052 wrote to memory of 5040	5052	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe
"C:\Users\Admin\AppData\Local\Temp\203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1092

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:5052

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:5040

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

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

MD5
ab076fa27a284d29152b8273a82b95b4

SHA1
4bfa210f44c47050b0ff92ca7c76a4225edb9150

SHA256
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b

SHA512
38940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f

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

MD5
ab076fa27a284d29152b8273a82b95b4

SHA1
4bfa210f44c47050b0ff92ca7c76a4225edb9150

SHA256
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b

SHA512
38940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f

Download Submit
memory/1092-132-0x0000000074900000-0x0000000074EB1000-memory.dmp

Filesize
5.7MB

Download
memory/1092-133-0x0000000074900000-0x0000000074EB1000-memory.dmp

Filesize
5.7MB

Download
memory/1092-138-0x0000000074900000-0x0000000074EB1000-memory.dmp

Filesize
5.7MB

Download
memory/5040-139-0x0000000000000000-mapping.dmp

Download
memory/5052-134-0x0000000000000000-mapping.dmp

Download
memory/5052-137-0x0000000074900000-0x0000000074EB1000-memory.dmp

Filesize
5.7MB

Download
memory/5052-140-0x0000000074900000-0x0000000074EB1000-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