njrat | 4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e

Analysis

max time kernel
359s
max time network
361s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 08:42

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General

Target

4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe
Size

23KB
MD5

b14754884befd3597f7975b9d9a5bc5b
SHA1

4d437d94a9c5c5e2a52aedb004970d4872c995f3
SHA256

4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e
SHA512

2b0ca7e45382db30c850f4cc84964979d6709a1cb86f4e2353b50721d49fcc93975c0bd7168dea2eab424a1d73a60a2b0b03eb1e17644447b41c4c8925398a78
SSDEEP

384:2weXCQIreJig/8Z7SS1fEBbng6ZgL2IBPZVmRvR6JZlbw8hqIusZzZrc:hLq411URpcnun

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

abatata.ddns.net:5552

Mutex

e7d031ada337226244d99c1bac494695

Attributes

reg_key
e7d031ada337226244d99c1bac494695
splitter
|'|'|

Signatures

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

Processes:

server.exe

pid process

3748 server.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

2296 netsh.exe

pid	process
3748	server.exe

pid	process
2296	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:

4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.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-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e7d031ada337226244d99c1bac494695 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e7d031ada337226244d99c1bac494695 = "\"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 WriteProcessMemory 6 IoCs

Processes:

4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exeserver.exe

description	pid	process	target process
PID 1980 wrote to memory of 3748	1980	4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe	server.exe
PID 1980 wrote to memory of 3748	1980	4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe	server.exe
PID 1980 wrote to memory of 3748	1980	4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe	server.exe
PID 3748 wrote to memory of 2296	3748	server.exe	netsh.exe
PID 3748 wrote to memory of 2296	3748	server.exe	netsh.exe
PID 3748 wrote to memory of 2296	3748	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe
"C:\Users\Admin\AppData\Local\Temp\4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1980

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 WriteProcessMemory
PID:3748

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:2296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

MD5
b14754884befd3597f7975b9d9a5bc5b

SHA1
4d437d94a9c5c5e2a52aedb004970d4872c995f3

SHA256
4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e

SHA512
2b0ca7e45382db30c850f4cc84964979d6709a1cb86f4e2353b50721d49fcc93975c0bd7168dea2eab424a1d73a60a2b0b03eb1e17644447b41c4c8925398a78

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

MD5
b14754884befd3597f7975b9d9a5bc5b

SHA1
4d437d94a9c5c5e2a52aedb004970d4872c995f3

SHA256
4f0c69afb14d1768b1c74555267239dbaebe00a48fd68c890f093444f4b6e41e

SHA512
2b0ca7e45382db30c850f4cc84964979d6709a1cb86f4e2353b50721d49fcc93975c0bd7168dea2eab424a1d73a60a2b0b03eb1e17644447b41c4c8925398a78

Download Submit
memory/1980-132-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/1980-133-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/1980-137-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/2296-140-0x0000000000000000-mapping.dmp

Download
memory/3748-134-0x0000000000000000-mapping.dmp

Download
memory/3748-138-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/3748-139-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download