njrat | fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03

Analysis

max time kernel
144s
max time network
141s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19/12/2024, 11:01

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General

Target

fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
Size

1.2MB
MD5

1d0533150b9b44246d4431607b3871ab
SHA1

73e34d8ab2f51edd471b06c3e2ad17c29701536a
SHA256

fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03
SHA512

a658d2f0768a94c632bb7bb1202584d27ff1bd5db94f8c3cf25f059803c01b3ed49c0ca4db326016a149723034a9bd56531072db2f0203c054d7e28d0ca277da
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95u:Jh+ZkldoPK8YaW7CaZ7IHu

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
2568	netsh.exe

Executes dropped EXE 2 IoCs

pid	Process
2944	data.exe
2084	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0034000000016d17-15.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2288 set thread context of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2944 set thread context of 2780	2944	data.exe	38

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	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	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.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

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
1028	schtasks.exe
1152	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2944	data.exe
2944	data.exe
2084	data.exe
2084	data.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe
Token: 33	2608	RegAsm.exe
Token: SeIncBasePriorityPrivilege	2608	RegAsm.exe

Suspicious use of FindShellTrayWindow 9 IoCs

pid	Process
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2944	data.exe
2944	data.exe
2944	data.exe
2084	data.exe
2084	data.exe
2084	data.exe

Suspicious use of SendNotifyMessage 9 IoCs

pid	Process
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
2944	data.exe
2944	data.exe
2944	data.exe
2084	data.exe
2084	data.exe
2084	data.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2288 wrote to memory of 2608	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	30
PID 2608 wrote to memory of 2568	2608	RegAsm.exe	31
PID 2608 wrote to memory of 2568	2608	RegAsm.exe	31
PID 2608 wrote to memory of 2568	2608	RegAsm.exe	31
PID 2608 wrote to memory of 2568	2608	RegAsm.exe	31
PID 2288 wrote to memory of 1152	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	34
PID 2288 wrote to memory of 1152	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	34
PID 2288 wrote to memory of 1152	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	34
PID 2288 wrote to memory of 1152	2288	fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe	34
PID 2916 wrote to memory of 2944	2916	taskeng.exe	37
PID 2916 wrote to memory of 2944	2916	taskeng.exe	37
PID 2916 wrote to memory of 2944	2916	taskeng.exe	37
PID 2916 wrote to memory of 2944	2916	taskeng.exe	37
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 2780	2944	data.exe	38
PID 2944 wrote to memory of 1028	2944	data.exe	39
PID 2944 wrote to memory of 1028	2944	data.exe	39
PID 2944 wrote to memory of 1028	2944	data.exe	39
PID 2944 wrote to memory of 1028	2944	data.exe	39
PID 2916 wrote to memory of 2084	2916	taskeng.exe	41
PID 2916 wrote to memory of 2084	2916	taskeng.exe	41
PID 2916 wrote to memory of 2084	2916	taskeng.exe	41
PID 2916 wrote to memory of 2084	2916	taskeng.exe	41

C:\Users\Admin\AppData\Local\Temp\fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.exe
"C:\Users\Admin\AppData\Local\Temp\fbfdfa9de3a80cc647a1173b193cbe3e7e2c56088c7e5fda2b75b2561eeebe03.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:2288
- 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:2608
- - 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:2568
- 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:1152

C:\Windows\system32\taskeng.exe
taskeng.exe {67C3ECA4-8482-4521-B447-6511616211AA} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2916
- 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:2944
- - 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:2780
- - 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:1028
- 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:2084

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
83f3f462b393cd26b35fe5a2155fd56e

SHA1
c72058398f76f1cd4acccc49623df5111b4c8118

SHA256
07872c5471feb3012d922777283cfb6e6065e20ba30dea2b192ca118d9d2d275

SHA512
8157bde3faeb9c85ac43f6b1e2b09b456fe3745b07bbc61fe14e714c6f5a87d93ec897732a65d2f2b5d272736db7b0e77202b2b39934ab8705eaa120fa53a7d7

Download Submit
memory/2288-0-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/2608-1-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/2608-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2608-9-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/2608-3-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/2608-10-0x0000000000090000-0x000000000009C000-memory.dmp

Filesize
48KB

Download
memory/2608-11-0x0000000073B82000-0x0000000073B84000-memory.dmp

Filesize
8KB

Download
memory/2608-12-0x0000000073B82000-0x0000000073B84000-memory.dmp

Filesize
8KB

Download