njrat | e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e

Analysis

max time kernel
119s
max time network
115s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 19:41

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General

Target

e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
Size

1.2MB
MD5

37940b39a24ea6db8d907a54fdc6faf2
SHA1

eea6075183c9852003006d2565ca02e95e7180f3
SHA256

e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e
SHA512

afe49b153806297bcc86ddd205d4cc22e57b743a0b62f486a259bd8e9792cc8cdf68d7347c5895967c598471efc1372b128714865235bb34940fa626b835f301
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95L:Jh+ZkldoPK8YaW7CaZ7IHL

Score

10^/10

njrat redlanhopto discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

redlanhopto

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
2552	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1708	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0031000000015ccc-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 1708 set thread context of 1380	1708	data.exe	40

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 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	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.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

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
2104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
1708	data.exe
1708	data.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe
Token: 33	2992	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2992	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
1708	data.exe
1708	data.exe
1708	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
1708	data.exe
1708	data.exe
1708	data.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2680 wrote to memory of 2992	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	31
PID 2992 wrote to memory of 2552	2992	RegAsm.exe	32
PID 2992 wrote to memory of 2552	2992	RegAsm.exe	32
PID 2992 wrote to memory of 2552	2992	RegAsm.exe	32
PID 2992 wrote to memory of 2552	2992	RegAsm.exe	32
PID 2680 wrote to memory of 2104	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	35
PID 2680 wrote to memory of 2104	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	35
PID 2680 wrote to memory of 2104	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	35
PID 2680 wrote to memory of 2104	2680	e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe	35
PID 2620 wrote to memory of 1708	2620	taskeng.exe	38
PID 2620 wrote to memory of 1708	2620	taskeng.exe	38
PID 2620 wrote to memory of 1708	2620	taskeng.exe	38
PID 2620 wrote to memory of 1708	2620	taskeng.exe	38
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40
PID 1708 wrote to memory of 1380	1708	data.exe	40

C:\Users\Admin\AppData\Local\Temp\e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe
"C:\Users\Admin\AppData\Local\Temp\e9730571a15989a660d7ce526719b3fe4df1cc8226993035522e8fb98d4bcc8e.exe"
1⤵
- 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:2680
- 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:2992
- - 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:2552
- 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:2104

C:\Windows\system32\taskeng.exe
taskeng.exe {BDD50F31-21EE-428E-9874-FD9F6CFD0752} S-1-5-21-312935884-697965778-3955649944-1000:MXQFNXLT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  2⤵
  - 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:1708
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
517e825eff455ac82e9170c4f7b7dc5b

SHA1
b57db47304e6e4c85224b661ff21a27337556609

SHA256
20802d6d5062b4d055d770f129ae62dbbc5fd5e97528fbdd742fb4278caeafaf

SHA512
418b7f5ffe10018b06991063b607552889b48c8430ba9081c3071f01d7f776d4b5ea0983c4e827a8662625fb8b5d7c6779a317bce1c17319b84ed56c2c1b89b8

Download Submit
memory/2680-0-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2992-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2992-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2992-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2992-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2992-10-0x0000000074862000-0x0000000074864000-memory.dmp

Filesize
8KB

Download
memory/2992-11-0x0000000074862000-0x0000000074864000-memory.dmp

Filesize
8KB

Download