njrat | 408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24

Analysis

max time kernel
116s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 11:25

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General

Target

408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
Size

1.2MB
MD5

b6d84da1e7884359bfae8fa18aaf8a80
SHA1

c01a49d30d94f1b9d0d908ab9d7afd50f5bd2375
SHA256

408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24
SHA512

8bd8da789f8050e05913fc823e8b04469f87c5902a1d0a38225a61a5593052e718fea1609b06a2e90dbfe355f1c77de0511a1f0ed7b8538fca6f670642cd140a
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95FC:Jh+ZkldoPK8YaW7CaZ7IHc

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
2920	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1256	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0009000000016c23-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 1256 set thread context of 2040	1256	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 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	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	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.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
1664	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
1256	data.exe
1256	data.exe

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe
Token: 33	1976	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1976	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
1256	data.exe
1256	data.exe
1256	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
1256	data.exe
1256	data.exe
1256	data.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 2368 wrote to memory of 1976	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	31
PID 1976 wrote to memory of 2920	1976	RegAsm.exe	32
PID 1976 wrote to memory of 2920	1976	RegAsm.exe	32
PID 1976 wrote to memory of 2920	1976	RegAsm.exe	32
PID 1976 wrote to memory of 2920	1976	RegAsm.exe	32
PID 2368 wrote to memory of 1664	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	35
PID 2368 wrote to memory of 1664	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	35
PID 2368 wrote to memory of 1664	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	35
PID 2368 wrote to memory of 1664	2368	408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe	35
PID 932 wrote to memory of 1256	932	taskeng.exe	38
PID 932 wrote to memory of 1256	932	taskeng.exe	38
PID 932 wrote to memory of 1256	932	taskeng.exe	38
PID 932 wrote to memory of 1256	932	taskeng.exe	38
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39
PID 1256 wrote to memory of 2040	1256	data.exe	39

C:\Users\Admin\AppData\Local\Temp\408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.exe
"C:\Users\Admin\AppData\Local\Temp\408e32d56539659189402923ae1e005d46d587adcc2b4d54fb931b0002050f24N.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:2368
- 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:1976
- - 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:2920
- 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:1664

C:\Windows\system32\taskeng.exe
taskeng.exe {2C362162-91EF-45D0-BEB7-AA449DEE6FBC} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:932
- 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:1256
- - 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:2040

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
5a38b932a60911638e098dcdc0169bfc

SHA1
25d7e27e7459ca46fd5e37f397e67beae39922fc

SHA256
98545c35634d4ac66c165d98239376d00c2330ebb89ac04597f39ee8750698bb

SHA512
1a486945c2bbebcc6983015b586863b1faaf53156c2961d8d48f0eaacef2015e1febbdf84230df2391aeb8637ae084efc88d4a137d195aeb3a35c8982f1f83ab

Download Submit
memory/1976-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1976-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1976-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1976-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1976-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1976-10-0x0000000074552000-0x0000000074554000-memory.dmp

Filesize
8KB

Download
memory/1976-11-0x0000000074552000-0x0000000074554000-memory.dmp

Filesize
8KB

Download
memory/2368-0-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download