njrat | 697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78

Analysis

max time kernel
146s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 22:20

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General

Target

697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
Size

1.2MB
MD5

a8b5a5b943f9de10236f7a8d28a1d30a
SHA1

062b3809c2d62510d6e88efe831db545d2eac0ef
SHA256

697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78
SHA512

1d1e9056e380346b1ecf93a0fd7dc70d45642f2491633061236b46e163cbb08d8b0576ef93b0fa4398d2cc43a68c426741ac5909420dc66118c5e0cc3b46c2c5
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95Z:Jh+ZkldoPK8YaW7CaZ7IHZ

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
2672	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1344	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0002000000013d08-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2464 set thread context of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 1344 set thread context of 2368	1344	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 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 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	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.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
3060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
1344	data.exe
1344	data.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe
Token: 33	828	RegAsm.exe
Token: SeIncBasePriorityPrivilege	828	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
1344	data.exe
1344	data.exe
1344	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
1344	data.exe
1344	data.exe
1344	data.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 2464 wrote to memory of 828	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	31
PID 828 wrote to memory of 2672	828	RegAsm.exe	32
PID 828 wrote to memory of 2672	828	RegAsm.exe	32
PID 828 wrote to memory of 2672	828	RegAsm.exe	32
PID 828 wrote to memory of 2672	828	RegAsm.exe	32
PID 2464 wrote to memory of 3060	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	35
PID 2464 wrote to memory of 3060	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	35
PID 2464 wrote to memory of 3060	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	35
PID 2464 wrote to memory of 3060	2464	697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe	35
PID 1332 wrote to memory of 1344	1332	taskeng.exe	39
PID 1332 wrote to memory of 1344	1332	taskeng.exe	39
PID 1332 wrote to memory of 1344	1332	taskeng.exe	39
PID 1332 wrote to memory of 1344	1332	taskeng.exe	39
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40
PID 1344 wrote to memory of 2368	1344	data.exe	40

C:\Users\Admin\AppData\Local\Temp\697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.exe
"C:\Users\Admin\AppData\Local\Temp\697ef72df90e101e9752f547065245b75e6224724744a7dff3d2707f293eda78.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:2464
- 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:828
- - 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:2672
- 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:3060

C:\Windows\system32\taskeng.exe
taskeng.exe {855FF12E-E49A-471B-AAEA-D57749C62E9A} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1332
- 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:1344
- - 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:2368

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
f1ca459e27b6b053d0eabe30b644507b

SHA1
5cf5a325b6fdf3b94acd5b240cb0dd9810917a2a

SHA256
73aed6714680722c9f5f66c4b5a83342ced911a48631b649c34253f2b91d2fe4

SHA512
1149eab9b7dbc6980cc539a7d498d5cb9b3de603f5bb433da3f39193cd0a227a86257e54e2a2e202c41b108904d3c6cab4ff115169654d2edc3338728f801df6

Download Submit
memory/828-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/828-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/828-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/828-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/828-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/828-10-0x0000000074922000-0x0000000074924000-memory.dmp

Filesize
8KB

Download
memory/828-11-0x0000000074922000-0x0000000074924000-memory.dmp

Filesize
8KB

Download
memory/2368-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2464-0-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download