njrat | 3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b

General

Target

3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe
Size

23KB
MD5

ca64a9c11199bbd232c737eb34117e0f
SHA1

44427cc753e8f1cda936970605885010772c4697
SHA256

3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b
SHA512

6d44d971dc16c3b52cf853f999c7fa212d478081d76b463db98858e3bccd040e7368d1667706b032675644b80d06ae3c3032e03475f0e23417607abbcaa5c126

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

securit.linkpc.net:10156

Mutex

d3cb74d223b66e1c3aebf64e3aa2b4d1

Attributes

reg_key
d3cb74d223b66e1c3aebf64e3aa2b4d1
splitter
|'|'|

Signatures

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

Processes:

svhost.exe

pid process

4700 svhost.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1592 netsh.exe

pid	process
4700	svhost.exe

pid	process
1592	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:

3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d3cb74d223b66e1c3aebf64e3aa2b4d1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe\" .."	svhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d3cb74d223b66e1c3aebf64e3aa2b4d1 = "\"C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe\" .."	svhost.exe

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{287D8A79-DEB4-4B19-83EE-21EF4BDE5159}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{E4AD6B4F-5F9D-4B9F-8C9B-0EEFEA2DC2F0}.catalogItem	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

Processes:

svhost.exe

description	pid	process
Token: SeDebugPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe
Token: 33	4700	svhost.exe
Token: SeIncBasePriorityPrivilege	4700	svhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exesvhost.exe

description	pid	process	target process
PID 4420 wrote to memory of 4700	4420	3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe	svhost.exe
PID 4420 wrote to memory of 4700	4420	3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe	svhost.exe
PID 4420 wrote to memory of 4700	4420	3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe	svhost.exe
PID 4700 wrote to memory of 1592	4700	svhost.exe	netsh.exe
PID 4700 wrote to memory of 1592	4700	svhost.exe	netsh.exe
PID 4700 wrote to memory of 1592	4700	svhost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe
"C:\Users\Admin\AppData\Local\Temp\3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4420

C:\Users\Admin\AppData\Roaming\svhost.exe
"C:\Users\Admin\AppData\Roaming\svhost.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svhost.exe" "svhost.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1592

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:3792

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

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\svhost.exe
Filesize
23KB

MD5
ca64a9c11199bbd232c737eb34117e0f

SHA1
44427cc753e8f1cda936970605885010772c4697

SHA256
3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b

SHA512
6d44d971dc16c3b52cf853f999c7fa212d478081d76b463db98858e3bccd040e7368d1667706b032675644b80d06ae3c3032e03475f0e23417607abbcaa5c126

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

MD5
ca64a9c11199bbd232c737eb34117e0f

SHA1
44427cc753e8f1cda936970605885010772c4697

SHA256
3b7f64b59e1472ab72c20b43f636002c87b58799da6388869a8b872e7316c08b

SHA512
6d44d971dc16c3b52cf853f999c7fa212d478081d76b463db98858e3bccd040e7368d1667706b032675644b80d06ae3c3032e03475f0e23417607abbcaa5c126

Download Submit
memory/1592-137-0x0000000000000000-mapping.dmp

Download
memory/4420-130-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4420-131-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4420-136-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4700-132-0x0000000000000000-mapping.dmp

Download
memory/4700-135-0x0000000074CC0000-0x0000000075271000-memory.dmp

Filesize
5.7MB

Download
memory/4700-138-0x0000000074CC0000-0x0000000075271000-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