njrat | fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03

General

Target

fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
Size

1.2MB
MD5

1d0533150b9b44246d4431607b3871ab
SHA1

73e34d8ab2f51edd471b06c3e2ad17c29701536a
SHA256

fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03
SHA512

a658d2f0768a94c632bb7bb1202584d27ff1bd5db94f8c3cf25f059803c01b3ed49c0ca4db326016a149723034a9bd56531072db2f0203c054d7e28d0ca277da
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95u:Jh+ZkldoPK8YaW7CaZ7IHu

Score

10^/10

njrat redlanhopto discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

redlanhopto

C2

redlan.hopto.org:5553

Mutex

d25d360449d7bab3069e1b77b3a914a3

Attributes

reg_key
d25d360449d7bab3069e1b77b3a914a3
splitter
|'|'|

Signatures

Njrat family
njrat
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
4520	netsh.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	data.exe

Executes dropped EXE 2 IoCs

pid	Process
1672	data.exe
2348	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000b000000023b8c-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4448 set thread context of 4576	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	90
PID 1672 set thread context of 2884	1672	data.exe	97

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

System Location Discovery: System Language Discovery 1 TTPs 8 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	data.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	data.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1900	schtasks.exe
1428	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
1672	data.exe
1672	data.exe
1672	data.exe
1672	data.exe
2348	data.exe
2348	data.exe
2348	data.exe
2348	data.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe
Token: 33	4576	RegAsm.exe
Token: SeIncBasePriorityPrivilege	4576	RegAsm.exe

Suspicious use of FindShellTrayWindow 9 IoCs

pid	Process
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
1672	data.exe
1672	data.exe
1672	data.exe
2348	data.exe
2348	data.exe
2348	data.exe

Suspicious use of SendNotifyMessage 9 IoCs

pid	Process
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
1672	data.exe
1672	data.exe
1672	data.exe
2348	data.exe
2348	data.exe
2348	data.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4448 wrote to memory of 4576	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	90
PID 4448 wrote to memory of 4576	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	90
PID 4448 wrote to memory of 4576	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	90
PID 4448 wrote to memory of 4576	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	90
PID 4448 wrote to memory of 4576	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	90
PID 4576 wrote to memory of 4520	4576	RegAsm.exe	92
PID 4576 wrote to memory of 4520	4576	RegAsm.exe	92
PID 4576 wrote to memory of 4520	4576	RegAsm.exe	92
PID 4448 wrote to memory of 1900	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	94
PID 4448 wrote to memory of 1900	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	94
PID 4448 wrote to memory of 1900	4448	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	94
PID 1672 wrote to memory of 2884	1672	data.exe	97
PID 1672 wrote to memory of 2884	1672	data.exe	97
PID 1672 wrote to memory of 2884	1672	data.exe	97
PID 1672 wrote to memory of 2884	1672	data.exe	97
PID 1672 wrote to memory of 2884	1672	data.exe	97
PID 1672 wrote to memory of 1428	1672	data.exe	98
PID 1672 wrote to memory of 1428	1672	data.exe	98
PID 1672 wrote to memory of 1428	1672	data.exe	98

C:\Users\Admin\AppData\Local\Temp\fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
"C:\Users\Admin\AppData\Local\Temp\fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4576
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" "RegAsm.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4520
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1900

C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1428

C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

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\Roaming\chkdsk\data.exe

Filesize
1.2MB

MD5
5ec26a77472590a3ccda7d4d3e4280bd

SHA1
0afa2c6ddff62e1631ad73e2130d42d7e0988cbf

SHA256
133b577f9d6243c3874647a589c0e9f777a2941ec52375f02e5aa65f793e449e

SHA512
403e69a27ba5a8c673e45118bce01dcca6409dcd5724d58c493a61ac0eeaca9ca2772d884152f5d0a490833101536c73eaf342d259ddcc519f44bc0a16dfbaaf

Download Submit
memory/2884-16-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4448-0-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

Filesize
4KB

Download
memory/4576-1-0x0000000000150000-0x000000000015C000-memory.dmp

Filesize
48KB

Download
memory/4576-6-0x0000000073E72000-0x0000000073E73000-memory.dmp

Filesize
4KB

Download
memory/4576-7-0x0000000073E70000-0x0000000074421000-memory.dmp

Filesize
5.7MB

Download
memory/4576-8-0x0000000073E70000-0x0000000074421000-memory.dmp

Filesize
5.7MB

Download
memory/4576-9-0x0000000073E72000-0x0000000073E73000-memory.dmp

Filesize
4KB

Download
memory/4576-10-0x0000000073E70000-0x0000000074421000-memory.dmp

Filesize
5.7MB

Download
memory/4576-11-0x0000000073E70000-0x0000000074421000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads