njrat | 780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67

General

Target
780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
Size 1.2MB
Sample241218-eebfcstkbn
SHA256 780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67
MD5 d79687d0ecfda782cb48b6cd26c05fa0
SHA1 f98c4a59da3b3cbb4e5f0ff0fceed556b92f2bb6
SHA512 ef68393f59f45dac25f9b4e0d59350adb8f5e29d206289fc39a73b750c7825e94f9aa0b6b7839cf5234e295d091ded70f91c7427dacea3d3637701e126bf6400
SSDEEP 24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95L:Jh+ZkldoPK8YaW7CaZ7IHL
MD5 SHA1 SHA512 SSDEEP

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
224	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023cc2-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4468 set thread context of 1124	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	98
PID 2592 set thread context of 4464	2592	data.exe	107

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 6 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	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	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.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
4956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
2592	data.exe
2592	data.exe
2592	data.exe
2592	data.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe
Token: 33	1124	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1124	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
2592	data.exe
2592	data.exe
2592	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
2592	data.exe
2592	data.exe
2592	data.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 1124	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	98
PID 4468 wrote to memory of 1124	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	98
PID 4468 wrote to memory of 1124	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	98
PID 4468 wrote to memory of 1124	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	98
PID 4468 wrote to memory of 1124	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	98
PID 1124 wrote to memory of 224	1124	RegAsm.exe	99
PID 1124 wrote to memory of 224	1124	RegAsm.exe	99
PID 1124 wrote to memory of 224	1124	RegAsm.exe	99
PID 4468 wrote to memory of 4956	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	103
PID 4468 wrote to memory of 4956	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	103
PID 4468 wrote to memory of 4956	4468	780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe	103
PID 2592 wrote to memory of 4464	2592	data.exe	107
PID 2592 wrote to memory of 4464	2592	data.exe	107
PID 2592 wrote to memory of 4464	2592	data.exe	107
PID 2592 wrote to memory of 4464	2592	data.exe	107
PID 2592 wrote to memory of 4464	2592	data.exe	107

C:\Users\Admin\AppData\Local\Temp\780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.exe
"C:\Users\Admin\AppData\Local\Temp\780f58ee78d7c94199192ef030bb63c5bb4516e27487c27cdcc7c75aa1cf9e67N.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:4468
- 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:1124
- - 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:224
- 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:4956

C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
1⤵
- 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:2592
- 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:4464

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

data.exe

Path C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
Size 1.2MB
SHA256 9c9ff29c282c951c170a79c77933d8333372722604985a308ccc9ddaf8c8afe2
MD5 b0a12f23f60ed5f65b2efa3de0c9e43f
SHA1 a825a20bc96de46749c35bdb1e80e13612bf1895
SHA512 56475ee8134a97bd21087aece02feb62a1216aa9bc5dfee2d0486b7d1711a70555e5955528d24498e8a3629e564c59b6b1b503fa90bb2a8dc797a66b2d14f2b7
SSDEEP 24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX956:Jh+ZkldoPK8YaW7CaZ7IH6
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1124-2-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1124-6-0x0000000073662000-0x0000000073663000-memory.dmp

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memory/1124-7-0x0000000073660000-0x0000000073C11000-memory.dmp

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memory/1124-8-0x0000000073660000-0x0000000073C11000-memory.dmp

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memory/1124-9-0x0000000073662000-0x0000000073663000-memory.dmp

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memory/1124-10-0x0000000073660000-0x0000000073C11000-memory.dmp

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memory/1124-11-0x0000000073660000-0x0000000073C11000-memory.dmp

Download

memory/4468-0-0x00000000031E0000-0x00000000031E1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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