njrat | 0a5fe6735794d87d1cb917aa4b92947f571eff6b5541008cc1f76a666df4fbfb

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
13/12/2024, 11:02

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General

Target

main.exe
Size

65KB
MD5

915756ae44759560e8476467163b0f5d
SHA1

02c6eeb6a68c4fab801061321645c3cf118b823a
SHA256

0a5fe6735794d87d1cb917aa4b92947f571eff6b5541008cc1f76a666df4fbfb
SHA512

4d7b862f7e4dd4856eac8e5982eb7ed10afddb943661b84cd8f06293fed80e26a65595a89b6abdd1d99bd6154791169006a6d0a4f572de756a691cfb9889049c
SSDEEP

1536:bukC8Q3PoN36tJQviFw1noU5BnvA7fLteF3nLrB9z3n+aF9buS9vM:bukC8Q3PoN36tJQviFCocBnIfWl9zOa+

Score

10^/10

njrat hacked discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Platinum

Botnet

HacKed

127.0.0.1:25565

Mutex

dllhost.exe

Attributes

reg_key
dllhost.exe
splitter
|Ghost|

Signatures

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

Deletes itself 1 IoCs

pid	Process
2980	cmd.exe

Drops startup file 3 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2848	dllhost.exe
2000	dllhost.exe
1804	dllhost.exe

Loads dropped DLL 1 IoCs

pid	Process
576	main.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\dllhost.exe = "\"C:\\ProgramData\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\dllhost.exe = "\"C:\\ProgramData\\dllhost.exe\" .."	dllhost.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 24 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	choice.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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.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	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	main.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.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	dllhost.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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Kills process with taskkill 6 IoCs

evasion

pid	Process
2788	taskkill.exe
2700	taskkill.exe
2172	taskkill.exe
2216	taskkill.exe
2368	taskkill.exe
1680	taskkill.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2508	schtasks.exe
364	schtasks.exe
1992	schtasks.exe
620	schtasks.exe
2692	schtasks.exe
2816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe
576	main.exe

Suspicious use of AdjustPrivilegeToken 38 IoCs

description	pid	Process
Token: SeDebugPrivilege	576	main.exe
Token: SeDebugPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: SeDebugPrivilege	2000	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: SeDebugPrivilege	1804	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe
Token: 33	2848	dllhost.exe
Token: SeIncBasePriorityPrivilege	2848	dllhost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 576 wrote to memory of 2848	576	main.exe	30
PID 576 wrote to memory of 2848	576	main.exe	30
PID 576 wrote to memory of 2848	576	main.exe	30
PID 576 wrote to memory of 2848	576	main.exe	30
PID 576 wrote to memory of 2980	576	main.exe	31
PID 576 wrote to memory of 2980	576	main.exe	31
PID 576 wrote to memory of 2980	576	main.exe	31
PID 576 wrote to memory of 2980	576	main.exe	31
PID 2980 wrote to memory of 3028	2980	cmd.exe	33
PID 2980 wrote to memory of 3028	2980	cmd.exe	33
PID 2980 wrote to memory of 3028	2980	cmd.exe	33
PID 2980 wrote to memory of 3028	2980	cmd.exe	33
PID 2848 wrote to memory of 2788	2848	dllhost.exe	34
PID 2848 wrote to memory of 2788	2848	dllhost.exe	34
PID 2848 wrote to memory of 2788	2848	dllhost.exe	34
PID 2848 wrote to memory of 2788	2848	dllhost.exe	34
PID 2848 wrote to memory of 2756	2848	dllhost.exe	36
PID 2848 wrote to memory of 2756	2848	dllhost.exe	36
PID 2848 wrote to memory of 2756	2848	dllhost.exe	36
PID 2848 wrote to memory of 2756	2848	dllhost.exe	36
PID 2848 wrote to memory of 2816	2848	dllhost.exe	38
PID 2848 wrote to memory of 2816	2848	dllhost.exe	38
PID 2848 wrote to memory of 2816	2848	dllhost.exe	38
PID 2848 wrote to memory of 2816	2848	dllhost.exe	38
PID 2848 wrote to memory of 2700	2848	dllhost.exe	40
PID 2848 wrote to memory of 2700	2848	dllhost.exe	40
PID 2848 wrote to memory of 2700	2848	dllhost.exe	40
PID 2848 wrote to memory of 2700	2848	dllhost.exe	40
PID 2848 wrote to memory of 2384	2848	dllhost.exe	42
PID 2848 wrote to memory of 2384	2848	dllhost.exe	42
PID 2848 wrote to memory of 2384	2848	dllhost.exe	42
PID 2848 wrote to memory of 2384	2848	dllhost.exe	42
PID 2848 wrote to memory of 2508	2848	dllhost.exe	44
PID 2848 wrote to memory of 2508	2848	dllhost.exe	44
PID 2848 wrote to memory of 2508	2848	dllhost.exe	44
PID 2848 wrote to memory of 2508	2848	dllhost.exe	44
PID 2148 wrote to memory of 2000	2148	taskeng.exe	47
PID 2148 wrote to memory of 2000	2148	taskeng.exe	47
PID 2148 wrote to memory of 2000	2148	taskeng.exe	47
PID 2148 wrote to memory of 2000	2148	taskeng.exe	47
PID 2848 wrote to memory of 2172	2848	dllhost.exe	48
PID 2848 wrote to memory of 2172	2848	dllhost.exe	48
PID 2848 wrote to memory of 2172	2848	dllhost.exe	48
PID 2848 wrote to memory of 2172	2848	dllhost.exe	48
PID 2848 wrote to memory of 1096	2848	dllhost.exe	50
PID 2848 wrote to memory of 1096	2848	dllhost.exe	50
PID 2848 wrote to memory of 1096	2848	dllhost.exe	50
PID 2848 wrote to memory of 1096	2848	dllhost.exe	50
PID 2848 wrote to memory of 364	2848	dllhost.exe	52
PID 2848 wrote to memory of 364	2848	dllhost.exe	52
PID 2848 wrote to memory of 364	2848	dllhost.exe	52
PID 2848 wrote to memory of 364	2848	dllhost.exe	52
PID 2848 wrote to memory of 2216	2848	dllhost.exe	54
PID 2848 wrote to memory of 2216	2848	dllhost.exe	54
PID 2848 wrote to memory of 2216	2848	dllhost.exe	54
PID 2848 wrote to memory of 2216	2848	dllhost.exe	54
PID 2848 wrote to memory of 1404	2848	dllhost.exe	56
PID 2848 wrote to memory of 1404	2848	dllhost.exe	56
PID 2848 wrote to memory of 1404	2848	dllhost.exe	56
PID 2848 wrote to memory of 1404	2848	dllhost.exe	56
PID 2848 wrote to memory of 1992	2848	dllhost.exe	58
PID 2848 wrote to memory of 1992	2848	dllhost.exe	58
PID 2848 wrote to memory of 1992	2848	dllhost.exe	58
PID 2848 wrote to memory of 1992	2848	dllhost.exe	58

C:\Users\Admin\AppData\Local\Temp\main.exe
"C:\Users\Admin\AppData\Local\Temp\main.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:576
- C:\ProgramData\dllhost.exe
  "C:\ProgramData\dllhost.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:2848
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    PID:2788
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2756
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\ProgramData\dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2816
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    PID:2700
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2384
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\ProgramData\dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2508
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    PID:2172
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1096
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\ProgramData\dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:364
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    PID:2216
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1404
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\ProgramData\dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1992
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    PID:2368
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1100
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\ProgramData\dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:620
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f im Wireshark.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    PID:1680
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /delete /tn "MicrosoftEdgeUpdateTaskMachine" /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2672
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "MicrosoftEdgeUpdateTaskMachine" /tr C:\ProgramData\dllhost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 5 & Del "C:\Users\Admin\AppData\Local\Temp\main.exe"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2980
- - C:\Windows\SysWOW64\choice.exe
    choice /C Y /N /D Y /T 5
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3028

C:\Windows\system32\taskeng.exe
taskeng.exe {D21ACEB8-BFDA-4A0F-832A-076D3FF0CC2E} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2148
- C:\ProgramData\dllhost.exe
  C:\ProgramData\dllhost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2000
- C:\ProgramData\dllhost.exe
  C:\ProgramData\dllhost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1804

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

\ProgramData\dllhost.exe

Filesize
65KB

MD5
915756ae44759560e8476467163b0f5d

SHA1
02c6eeb6a68c4fab801061321645c3cf118b823a

SHA256
0a5fe6735794d87d1cb917aa4b92947f571eff6b5541008cc1f76a666df4fbfb

SHA512
4d7b862f7e4dd4856eac8e5982eb7ed10afddb943661b84cd8f06293fed80e26a65595a89b6abdd1d99bd6154791169006a6d0a4f572de756a691cfb9889049c

Download Submit
memory/576-0-0x0000000074E81000-0x0000000074E82000-memory.dmp

Filesize
4KB

Download
memory/576-1-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/576-2-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/576-13-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/576-14-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-10-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-11-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-12-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download
memory/2848-18-0x0000000074E80000-0x000000007542B000-memory.dmp

Filesize
5.7MB

Download