njrat | 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c

Analysis

max time kernel
145s
max time network
145s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11-12-2024 23:40

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General

Target

800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
Size

1.2MB
MD5

f45dfec03714aad85cae5ada0ea1f104
SHA1

d1f589ed4e83dd4d1ff28c29433cdf9b5c944d88
SHA256

800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c
SHA512

1175cdd12c7ac6ff29be17097dc0e604f89c7550068ee41f3ecfe8daa89cde813269ad1e432bcf6640c57313ba86dd8c92223fceaf4bbaafa8572a789ea19f33
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX950:Jh+ZkldoPK8YaW7CaZ7IH0

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
2712	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2272	data.exe
1140	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0009000000016ace-15.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2024 set thread context of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2272 set thread context of 896	2272	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 8 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	data.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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
2256	schtasks.exe
2204	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2272	data.exe
2272	data.exe
1140	data.exe
1140	data.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe
Token: 33	2744	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2744	RegAsm.exe

Suspicious use of FindShellTrayWindow 9 IoCs

pid	Process
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2272	data.exe
2272	data.exe
2272	data.exe
1140	data.exe
1140	data.exe
1140	data.exe

Suspicious use of SendNotifyMessage 9 IoCs

pid	Process
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
2272	data.exe
2272	data.exe
2272	data.exe
1140	data.exe
1140	data.exe
1140	data.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2024 wrote to memory of 2744	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	31
PID 2744 wrote to memory of 2712	2744	RegAsm.exe	32
PID 2744 wrote to memory of 2712	2744	RegAsm.exe	32
PID 2744 wrote to memory of 2712	2744	RegAsm.exe	32
PID 2744 wrote to memory of 2712	2744	RegAsm.exe	32
PID 2024 wrote to memory of 2256	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	35
PID 2024 wrote to memory of 2256	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	35
PID 2024 wrote to memory of 2256	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	35
PID 2024 wrote to memory of 2256	2024	800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe	35
PID 752 wrote to memory of 2272	752	taskeng.exe	38
PID 752 wrote to memory of 2272	752	taskeng.exe	38
PID 752 wrote to memory of 2272	752	taskeng.exe	38
PID 752 wrote to memory of 2272	752	taskeng.exe	38
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 896	2272	data.exe	39
PID 2272 wrote to memory of 2204	2272	data.exe	41
PID 2272 wrote to memory of 2204	2272	data.exe	41
PID 2272 wrote to memory of 2204	2272	data.exe	41
PID 2272 wrote to memory of 2204	2272	data.exe	41
PID 752 wrote to memory of 1140	752	taskeng.exe	43
PID 752 wrote to memory of 1140	752	taskeng.exe	43
PID 752 wrote to memory of 1140	752	taskeng.exe	43
PID 752 wrote to memory of 1140	752	taskeng.exe	43

C:\Users\Admin\AppData\Local\Temp\800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
"C:\Users\Admin\AppData\Local\Temp\800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.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:2024
- 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:2744
- - 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:2712
- 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:2256

C:\Windows\system32\taskeng.exe
taskeng.exe {40FF809B-2133-416B-AB74-03F7C0248943} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:752
- 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:2272
- - 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:896
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2204
- C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  C:\Users\Admin\AppData\Roaming\chkdsk\data.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:1140

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
5dacb2b80d82694969d3afd38ef2dccc

SHA1
0a17935b463f0f96e151a8a9d1feb72c9bd06339

SHA256
f37be51d693d2172a93b6f56d78c2a3ff895b7e46778189e1de7504fe7ba863c

SHA512
aa2d572c5f610d07bf0200a6733f5d4b5b8bd8b0a8ee06332db04697f8d38c561a7bf51dc342aa138a9da46efbeac1a245fab79281307de982330894bc867465

Download Submit
memory/2024-0-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2744-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2744-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2744-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2744-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2744-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2744-10-0x0000000073FB2000-0x0000000073FB4000-memory.dmp

Filesize
8KB

Download
memory/2744-11-0x0000000073FB2000-0x0000000073FB4000-memory.dmp

Filesize
8KB

Download