njrat | 74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08df

General

Target

74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
Size

1.2MB
MD5

db4d31386a48d83ba9575221ee214b40
SHA1

7af7fb498844643c4f77ebf4b3fbcf95b3cd0e43
SHA256

74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08df
SHA512

6385b2bc8f62b3ad15bd8305459f2d9ddda58225d1bfa4f095db7590635fcec3e34841ef4790cf2a68e4aaf3e14da6a67afe6eb4ce3ac93d6542240e69de1f12
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95P:Jh+ZkldoPK8YaW7CaZ7IHP

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
4416	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	data.exe

Executes dropped EXE 1 IoCs

pid	Process
4392	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0008000000023cb2-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1660 set thread context of 1844	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	92
PID 4392 set thread context of 1968	4392	data.exe	98

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 7 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.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 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2288	schtasks.exe
1676	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
4392	data.exe
4392	data.exe
4392	data.exe
4392	data.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe
Token: 33	1844	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1844	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
4392	data.exe
4392	data.exe
4392	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
4392	data.exe
4392	data.exe
4392	data.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1844	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	92
PID 1660 wrote to memory of 1844	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	92
PID 1660 wrote to memory of 1844	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	92
PID 1660 wrote to memory of 1844	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	92
PID 1660 wrote to memory of 1844	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	92
PID 1844 wrote to memory of 4416	1844	RegAsm.exe	93
PID 1844 wrote to memory of 4416	1844	RegAsm.exe	93
PID 1844 wrote to memory of 4416	1844	RegAsm.exe	93
PID 1660 wrote to memory of 2288	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	95
PID 1660 wrote to memory of 2288	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	95
PID 1660 wrote to memory of 2288	1660	74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe	95
PID 4392 wrote to memory of 1968	4392	data.exe	98
PID 4392 wrote to memory of 1968	4392	data.exe	98
PID 4392 wrote to memory of 1968	4392	data.exe	98
PID 4392 wrote to memory of 1968	4392	data.exe	98
PID 4392 wrote to memory of 1968	4392	data.exe	98
PID 4392 wrote to memory of 1676	4392	data.exe	99
PID 4392 wrote to memory of 1676	4392	data.exe	99
PID 4392 wrote to memory of 1676	4392	data.exe	99

C:\Users\Admin\AppData\Local\Temp\74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.exe
"C:\Users\Admin\AppData\Local\Temp\74bf136a7fbe0ab21dfdb2bd986ea1c4bba6e683de6b8d31f93f0ea1e2da08dfN.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:1660
- 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:1844
- - 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:4416
- 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:2288

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:4392
- 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:1968
- 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:1676

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
fa101fc6fe1306e2a86137f5ab964b9a

SHA1
7e2c31027449c9eeeef55087549b46d6a823476c

SHA256
625eea3cdb913f0d636ab49f5c3acae3c79a6d51d6dd41d9565699ea08bc2286

SHA512
1081d3bce1c9093b8162abf3e99fda3f7f9e312714ede79e765a3ee73e181405bb7c43e160a608be2666fcb09066c51e35fc870dbd32ee2aecf4b287558fef40

Download Submit
memory/1660-0-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/1844-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1844-6-0x0000000074282000-0x0000000074283000-memory.dmp

Filesize
4KB

Download
memory/1844-7-0x0000000074280000-0x0000000074831000-memory.dmp

Filesize
5.7MB

Download
memory/1844-8-0x0000000074280000-0x0000000074831000-memory.dmp

Filesize
5.7MB

Download
memory/1844-9-0x0000000074282000-0x0000000074283000-memory.dmp

Filesize
4KB

Download
memory/1844-10-0x0000000074280000-0x0000000074831000-memory.dmp

Filesize
5.7MB

Download
memory/1844-11-0x0000000074280000-0x0000000074831000-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