njrat | f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122dd

General

Target

f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
Size

1.2MB
MD5

f583d334c2d7b0993a306101b00c90f0
SHA1

9c872e81f2b5ab31ff6f289f82046ce68ce49889
SHA256

f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122dd
SHA512

a21b1b94988d7e9ab0c5d411fb58c4e809eed27a842eea554794e27dae83673c54395a34145ec06d4ef3a15472f3096e968d3ebb1af6617491b1bc286966934d
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95G:Jh+ZkldoPK8YaW7CaZ7IHG

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
4224	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe

Executes dropped EXE 1 IoCs

pid	Process
1716	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023c88-14.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4128 set thread context of 804	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	99

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

System Location Discovery: System Language Discovery 1 TTPs 5 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	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.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

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4352	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
1716	data.exe
1716	data.exe
1716	data.exe
1716	data.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe
Token: 33	804	RegAsm.exe
Token: SeIncBasePriorityPrivilege	804	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
1716	data.exe
1716	data.exe
1716	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
1716	data.exe
1716	data.exe
1716	data.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 804	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	99
PID 4128 wrote to memory of 804	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	99
PID 4128 wrote to memory of 804	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	99
PID 4128 wrote to memory of 804	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	99
PID 4128 wrote to memory of 804	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	99
PID 804 wrote to memory of 4224	804	RegAsm.exe	101
PID 804 wrote to memory of 4224	804	RegAsm.exe	101
PID 804 wrote to memory of 4224	804	RegAsm.exe	101
PID 4128 wrote to memory of 4352	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	104
PID 4128 wrote to memory of 4352	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	104
PID 4128 wrote to memory of 4352	4128	f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe	104

C:\Users\Admin\AppData\Local\Temp\f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.exe
"C:\Users\Admin\AppData\Local\Temp\f75e8a6e2f017c2a66476dc9257d1465e5b891b35fd7a58d544faf17ab0122ddN.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:4128
- 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:804
- - 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:4224
- 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:4352

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:1716

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
ab6cd384feeebf3e00a9388fc3f69b51

SHA1
0d71c5850da9cb71ccdae4a9ec2861e199f5d2c1

SHA256
b7f2029f29ce5ed0b50dbee8d005c44760efc4110f1134913a28414e8de00d9b

SHA512
2c8d73ced3577d603a77397539a815d3e46ac1a476cca46da16d2b92f5a5648b03d61c591e97552b76d4717d25a365a6721c794ca1bdb7410cf063e3108f4609

Download Submit
memory/804-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/804-6-0x0000000073D22000-0x0000000073D23000-memory.dmp

Filesize
4KB

Download
memory/804-7-0x0000000073D20000-0x00000000742D1000-memory.dmp

Filesize
5.7MB

Download
memory/804-8-0x0000000073D20000-0x00000000742D1000-memory.dmp

Filesize
5.7MB

Download
memory/804-9-0x0000000073D22000-0x0000000073D23000-memory.dmp

Filesize
4KB

Download
memory/804-10-0x0000000073D20000-0x00000000742D1000-memory.dmp

Filesize
5.7MB

Download
memory/804-11-0x0000000073D20000-0x00000000742D1000-memory.dmp

Filesize
5.7MB

Download
memory/4128-0-0x0000000001540000-0x0000000001541000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads