njrat | 58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5

General

Target

58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe
Size

1.2MB
MD5

42a97cec33e8c8e987d5739fbd3c9f00
SHA1

1704e208451006c59a246e65fce67860f9c76c2f
SHA256

58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5
SHA512

4dcba032583dc5cd7415f2f2407c658e304a06f081e596534e6b1f5b602730777404db8ab563c34ecaefbfdca6d727ccdec81036a47544ddf1ae54b76ed12b8c
SSDEEP

24576:SAqPpaQKsfCB1DSkIP619ot0IN46qu6I9lMMGwTX3EuAjjv5tJPVUVF4j6:SAq3JCz1IPQiqu6I9KMNTX3EuQFtJPVU

Score

10^/10

njrat karla 1998 discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

KARLA 1998

C2

seznam.hopto.org:1177

Mutex

36db42ed563b740681ec3918ded7c343

Attributes

reg_key
36db42ed563b740681ec3918ded7c343
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2152	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\36db42ed563b740681ec3918ded7c343.exe	facebok.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\36db42ed563b740681ec3918ded7c343.exe	facebok.exe

Executes dropped EXE 1 IoCs

pid	Process
2204	facebok.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\36db42ed563b740681ec3918ded7c343 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\facebok.exe\" .."	facebok.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\36db42ed563b740681ec3918ded7c343 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\facebok.exe\" .."	facebok.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	facebok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe
Token: 33	2204	facebok.exe
Token: SeIncBasePriorityPrivilege	2204	facebok.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3824 wrote to memory of 2204	3824	58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe	86
PID 3824 wrote to memory of 2204	3824	58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe	86
PID 3824 wrote to memory of 2204	3824	58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe	86
PID 2204 wrote to memory of 2152	2204	facebok.exe	90
PID 2204 wrote to memory of 2152	2204	facebok.exe	90
PID 2204 wrote to memory of 2152	2204	facebok.exe	90

C:\Users\Admin\AppData\Local\Temp\58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe
"C:\Users\Admin\AppData\Local\Temp\58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3824
- C:\Users\Admin\AppData\Local\Temp\facebok.exe
  "C:\Users\Admin\AppData\Local\Temp\facebok.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\facebok.exe" "facebok.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\facebok.exe

Filesize
1.2MB

MD5
42a97cec33e8c8e987d5739fbd3c9f00

SHA1
1704e208451006c59a246e65fce67860f9c76c2f

SHA256
58dae216d7e872a5ac859cb6990165c8a1b6c10b7d39498b3b38327bf8500ae5

SHA512
4dcba032583dc5cd7415f2f2407c658e304a06f081e596534e6b1f5b602730777404db8ab563c34ecaefbfdca6d727ccdec81036a47544ddf1ae54b76ed12b8c

Download Submit
memory/2204-28-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/2204-27-0x0000000006DC0000-0x0000000006E26000-memory.dmp

Filesize
408KB

Download
memory/2204-26-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/2204-23-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/2204-22-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3824-4-0x0000000005430000-0x00000000054CC000-memory.dmp

Filesize
624KB

Download
memory/3824-7-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3824-8-0x0000000005D90000-0x0000000005E6C000-memory.dmp

Filesize
880KB

Download
memory/3824-9-0x0000000005FD0000-0x0000000005FDC000-memory.dmp

Filesize
48KB

Download
memory/3824-6-0x00000000054D0000-0x0000000005526000-memory.dmp

Filesize
344KB

Download
memory/3824-5-0x00000000053A0000-0x00000000053AA000-memory.dmp

Filesize
40KB

Download
memory/3824-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/3824-24-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/3824-3-0x00000000052F0000-0x0000000005382000-memory.dmp

Filesize
584KB

Download
memory/3824-2-0x00000000057E0000-0x0000000005D84000-memory.dmp

Filesize
5.6MB

Download
memory/3824-1-0x00000000007E0000-0x0000000000914000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads