njrat | 940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376

Analysis

max time kernel
145s
max time network
139s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 11:38

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General

Target

940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
Size

1.2MB
MD5

ef28cd27628365a72256734320fa571a
SHA1

acb09fbee054b26359409bb4bab193b17aa1c7bc
SHA256

940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376
SHA512

be4eae7b8ab5da75cf64cafc8cb79d32d60444954a426ce6d0a1fb51570dc7d2367ebc11f4b57ffbc48c34f7bf71624ff3fde8cdbf9803b89bc664b0e0c753c5
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95j:Jh+ZkldoPK8YaW7CaZ7IHj

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
2960	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1832	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x00080000000173fb-15.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2712 set thread context of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 1832 set thread context of 284	1832	data.exe	39

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	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	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.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
2376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
1832	data.exe
1832	data.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe
Token: 33	1620	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1620	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
1832	data.exe
1832	data.exe
1832	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
1832	data.exe
1832	data.exe
1832	data.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 2712 wrote to memory of 1620	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	31
PID 1620 wrote to memory of 2960	1620	RegAsm.exe	32
PID 1620 wrote to memory of 2960	1620	RegAsm.exe	32
PID 1620 wrote to memory of 2960	1620	RegAsm.exe	32
PID 1620 wrote to memory of 2960	1620	RegAsm.exe	32
PID 2712 wrote to memory of 2376	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	35
PID 2712 wrote to memory of 2376	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	35
PID 2712 wrote to memory of 2376	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	35
PID 2712 wrote to memory of 2376	2712	940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe	35
PID 1768 wrote to memory of 1832	1768	taskeng.exe	38
PID 1768 wrote to memory of 1832	1768	taskeng.exe	38
PID 1768 wrote to memory of 1832	1768	taskeng.exe	38
PID 1768 wrote to memory of 1832	1768	taskeng.exe	38
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39
PID 1832 wrote to memory of 284	1832	data.exe	39

C:\Users\Admin\AppData\Local\Temp\940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.exe
"C:\Users\Admin\AppData\Local\Temp\940a6a70a6b820f5f31ac68a2582d2197cd62f4ba30330ddbe23cf23b41f1376.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:2712
- 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:1620
- - 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:2960
- 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:2376

C:\Windows\system32\taskeng.exe
taskeng.exe {33E14AB8-016B-4F16-B8A1-822A695BC4A6} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1768
- 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:1832
- - 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:284

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
1aafb7d874ebb1f567e73e59b835d7ef

SHA1
1271c45e28f8d279ddd75c61e6365c68f113a5af

SHA256
3f14b5dad0050a77011f4ab43ae154eeecda01d7dc076af2601b7246296349fa

SHA512
37ddb213bf234855f0679bdf9e3c4b3e8824e33564067b29f0d540411d36111e902c7157f71ec499755e243c3f5781e98ce4e601ed8160653ab1998b8306918c

Download Submit
memory/284-19-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/284-26-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/284-25-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1620-1-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/1620-9-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/1620-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1620-3-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/1620-10-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/1620-11-0x0000000074882000-0x0000000074884000-memory.dmp

Filesize
8KB

Download
memory/1620-12-0x0000000074882000-0x0000000074884000-memory.dmp

Filesize
8KB

Download
memory/2712-0-0x0000000000400000-0x0000000000401000-memory.dmp

Filesize
4KB

Download