njrat | 863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
18-12-2024 04:30

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General

Target

863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe
Size

164KB
MD5

865bf3d2eeb62c50359ede787f510100
SHA1

462a1745c2da3d1ae7688a3fda60e441debede32
SHA256

863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6
SHA512

6d37e88b08fbff52db3db3b19627f49cdad54082c9b34ad8decb90857ab8318b14764a3ee5e6a4dd96f4e272daf8ebfb79139bc3332d8842368431383932d862
SSDEEP

3072:8w11/wTvYZDDNF90qhRb70L8czxE2YY6q9bLzl6fHMEBuo:8wZD9b70wczSTYh9bAlD

Score

10^/10

njrat discovery persistence trojan

Malware Config

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupHelper.exe	StartupHelper.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\StartupHelper.exe	StartupHelper.exe

Executes dropped EXE 3 IoCs

pid	Process
3004	StartupHelper.exe
2716	StartupHelper.exe
1944	StartupHelper.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\StartupHelper.exe = "\"C:\\Windows\\StartupHelper.exe\" .."	StartupHelper.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\StartupHelper.exe = "\"C:\\Windows\\StartupHelper.exe\" .."	StartupHelper.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\StartupHelper.exe	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 12 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	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StartupHelper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StartupHelper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	StartupHelper.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2692	schtasks.exe
828	schtasks.exe
2096	schtasks.exe
2936	schtasks.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe
Token: 33	3004	StartupHelper.exe
Token: SeIncBasePriorityPrivilege	3004	StartupHelper.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2388	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	30
PID 2100 wrote to memory of 2388	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	30
PID 2100 wrote to memory of 2388	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	30
PID 2100 wrote to memory of 2388	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	30
PID 2100 wrote to memory of 2096	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	32
PID 2100 wrote to memory of 2096	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	32
PID 2100 wrote to memory of 2096	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	32
PID 2100 wrote to memory of 2096	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	32
PID 2100 wrote to memory of 3004	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	35
PID 2100 wrote to memory of 3004	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	35
PID 2100 wrote to memory of 3004	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	35
PID 2100 wrote to memory of 3004	2100	863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe	35
PID 3004 wrote to memory of 2832	3004	StartupHelper.exe	36
PID 3004 wrote to memory of 2832	3004	StartupHelper.exe	36
PID 3004 wrote to memory of 2832	3004	StartupHelper.exe	36
PID 3004 wrote to memory of 2832	3004	StartupHelper.exe	36
PID 3004 wrote to memory of 2936	3004	StartupHelper.exe	38
PID 3004 wrote to memory of 2936	3004	StartupHelper.exe	38
PID 3004 wrote to memory of 2936	3004	StartupHelper.exe	38
PID 3004 wrote to memory of 2936	3004	StartupHelper.exe	38
PID 2224 wrote to memory of 2716	2224	taskeng.exe	41
PID 2224 wrote to memory of 2716	2224	taskeng.exe	41
PID 2224 wrote to memory of 2716	2224	taskeng.exe	41
PID 2224 wrote to memory of 2716	2224	taskeng.exe	41
PID 2716 wrote to memory of 2856	2716	StartupHelper.exe	42
PID 2716 wrote to memory of 2856	2716	StartupHelper.exe	42
PID 2716 wrote to memory of 2856	2716	StartupHelper.exe	42
PID 2716 wrote to memory of 2856	2716	StartupHelper.exe	42
PID 2716 wrote to memory of 2692	2716	StartupHelper.exe	44
PID 2716 wrote to memory of 2692	2716	StartupHelper.exe	44
PID 2716 wrote to memory of 2692	2716	StartupHelper.exe	44
PID 2716 wrote to memory of 2692	2716	StartupHelper.exe	44
PID 2224 wrote to memory of 1944	2224	taskeng.exe	46
PID 2224 wrote to memory of 1944	2224	taskeng.exe	46
PID 2224 wrote to memory of 1944	2224	taskeng.exe	46
PID 2224 wrote to memory of 1944	2224	taskeng.exe	46
PID 1944 wrote to memory of 1440	1944	StartupHelper.exe	47
PID 1944 wrote to memory of 1440	1944	StartupHelper.exe	47
PID 1944 wrote to memory of 1440	1944	StartupHelper.exe	47
PID 1944 wrote to memory of 1440	1944	StartupHelper.exe	47
PID 1944 wrote to memory of 828	1944	StartupHelper.exe	49
PID 1944 wrote to memory of 828	1944	StartupHelper.exe	49
PID 1944 wrote to memory of 828	1944	StartupHelper.exe	49
PID 1944 wrote to memory of 828	1944	StartupHelper.exe	49

C:\Users\Admin\AppData\Local\Temp\863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe
"C:\Users\Admin\AppData\Local\Temp\863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /Delete /tn NYAN /F
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /tn NYAN /tr "C:\Users\Admin\AppData\Local\Temp\863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6N.exe" /sc minute /mo 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2096
- C:\Windows\StartupHelper.exe
  "C:\Windows\StartupHelper.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /Delete /tn NYAN /F
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2832
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn NYAN /tr "C:\Windows\StartupHelper.exe" /sc minute /mo 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2936

C:\Windows\system32\taskeng.exe
taskeng.exe {0B6C31C0-A6B6-40DC-821F-827AFE247F06} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\StartupHelper.exe
  C:\Windows\StartupHelper.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /Delete /tn NYAN /F
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2856
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn NYAN /tr "C:\Windows\StartupHelper.exe" /sc minute /mo 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2692
- C:\Windows\StartupHelper.exe
  C:\Windows\StartupHelper.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1944
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /Delete /tn NYAN /F
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1440
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /tn NYAN /tr "C:\Windows\StartupHelper.exe" /sc minute /mo 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

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:\Windows\StartupHelper.exe

Filesize
164KB

MD5
865bf3d2eeb62c50359ede787f510100

SHA1
462a1745c2da3d1ae7688a3fda60e441debede32

SHA256
863a54fcc0edc46e52df772d40698c5645029ea6031022ea8e19a686245d49c6

SHA512
6d37e88b08fbff52db3db3b19627f49cdad54082c9b34ad8decb90857ab8318b14764a3ee5e6a4dd96f4e272daf8ebfb79139bc3332d8842368431383932d862

Download Submit
memory/2100-0-0x0000000074E61000-0x0000000074E62000-memory.dmp

Filesize
4KB

Download
memory/2100-1-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download
memory/2100-2-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download
memory/2100-12-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download
memory/3004-9-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download
memory/3004-10-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download
memory/3004-11-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download
memory/3004-14-0x0000000074E60000-0x000000007540B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads