njrat | 1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1

Analysis

max time kernel
119s
max time network
115s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 08:01

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General

Target

1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
Size

1.2MB
MD5

d1bd0385f5db843cef6bbfb7fb195975
SHA1

9f19af1c49820e8a280913c6102ab656c883203c
SHA256

1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1
SHA512

d6a686edacca1a4d4f3fbfc9687eedc445a65dd336848d462f8e6a6f8fb74d117520e52bebd2f75cfa0dad5d8af3f049265d2c4ee3bf81bd1ef45fd83e4907ff
SSDEEP

24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95t:Jh+ZkldoPK8YaW7CaZ7IHt

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
2816	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
2848	data.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0008000000019261-14.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2388 set thread context of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2848 set thread context of 1696	2848	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 7 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	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.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
2720	schtasks.exe
1608	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2848	data.exe
2848	data.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe
Token: 33	1972	RegAsm.exe
Token: SeIncBasePriorityPrivilege	1972	RegAsm.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2848	data.exe
2848	data.exe
2848	data.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
2848	data.exe
2848	data.exe
2848	data.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 2388 wrote to memory of 1972	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	31
PID 1972 wrote to memory of 2816	1972	RegAsm.exe	32
PID 1972 wrote to memory of 2816	1972	RegAsm.exe	32
PID 1972 wrote to memory of 2816	1972	RegAsm.exe	32
PID 1972 wrote to memory of 2816	1972	RegAsm.exe	32
PID 2388 wrote to memory of 2720	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	35
PID 2388 wrote to memory of 2720	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	35
PID 2388 wrote to memory of 2720	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	35
PID 2388 wrote to memory of 2720	2388	1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe	35
PID 1888 wrote to memory of 2848	1888	taskeng.exe	38
PID 1888 wrote to memory of 2848	1888	taskeng.exe	38
PID 1888 wrote to memory of 2848	1888	taskeng.exe	38
PID 1888 wrote to memory of 2848	1888	taskeng.exe	38
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1696	2848	data.exe	39
PID 2848 wrote to memory of 1608	2848	data.exe	40
PID 2848 wrote to memory of 1608	2848	data.exe	40
PID 2848 wrote to memory of 1608	2848	data.exe	40
PID 2848 wrote to memory of 1608	2848	data.exe	40

C:\Users\Admin\AppData\Local\Temp\1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.exe
"C:\Users\Admin\AppData\Local\Temp\1f6c99109db5715ccb20ea4c10e006e1f580977735fde40e7d22ee70026002c1.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:2388
- 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:1972
- - 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:2816
- 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:2720

C:\Windows\system32\taskeng.exe
taskeng.exe {DBE815D3-8701-4CBF-90B0-9376AFC81172} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1888
- 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:2848
- - 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:1696
- - 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:1608

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
04aa02a68ca86f754987938353d20cfa

SHA1
c35115e1e534736ff677a9c49101769628c61237

SHA256
bdbcb723f11048ebc904583e4eac440b3dea9503fff9ce34843ea052b2ea3c2e

SHA512
f19062676aaef07f6c145cc2a367dcc901eb526577098330f00ca7bbaa41deaaf8445bf53570e548bc07e9e019b79f9ba8b0bc78bed68bcdbf77c9c2b591e7ff

Download Submit
memory/1696-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1972-8-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1972-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1972-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1972-1-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1972-9-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1972-10-0x0000000073CF2000-0x0000000073CF4000-memory.dmp

Filesize
8KB

Download
memory/1972-11-0x0000000073CF2000-0x0000000073CF4000-memory.dmp

Filesize
8KB

Download
memory/2388-0-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download