njrat | ecedda5e5b8289ca6a2934482d13106d0c5faa7cb5fb7b2f1685bc2cc4147f02

Analysis

max time kernel
150s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-10-2024 05:40

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General

Target

2INJECTBYPASSBP.exe
Size

141KB
MD5

80d2c46d0860242b374567bee889b360
SHA1

1824af121d54fb6a9f27e60177e6dfd51a1e5005
SHA256

ecedda5e5b8289ca6a2934482d13106d0c5faa7cb5fb7b2f1685bc2cc4147f02
SHA512

cfc23f37fe2ef6be6de9445bd969eb1d7edb0289aa1180f1f42ee3ef0214fc986e8ea07d458c307f09b66df387c97c3ac8e411b98c192b3f5559b8eabb3c563f
SSDEEP

3072:osSasVMY3+pWOwarL59GoPTMajtQ9RWVtoH8qDT4bfGFkGS+b03mD7XY:oBVMY3+p9l7tQKfqDTcYkFmD7X

Score

10^/10

njrat hacked defense_evasion discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Platinum

Botnet

HacKed

127.0.0.1:36597

Mutex

realtek.exe

Attributes

reg_key
realtek.exe
splitter
|Ghost|

Signatures

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

.NET Reactor proctector 1 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/memory/1564-1-0x00000000000C0000-0x00000000000EA000-memory.dmp	net_reactor

Drops startup file 3 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2576	njrat client.exe
2428	realtek.exe

Loads dropped DLL 1 IoCs

pid	Process
2576	njrat client.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\realtek.exe = "\"C:\\Users\\Admin\\realtek.exe\" .."	realtek.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\realtek.exe = "\"C:\\Users\\Admin\\realtek.exe\" .."	realtek.exe

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
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 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	choice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njrat client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	realtek.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
2616	schtasks.exe
2900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2660	powershell.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe
Token: 33	2428	realtek.exe
Token: SeIncBasePriorityPrivilege	2428	realtek.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 2660	1564	2INJECTBYPASSBP.exe	29
PID 1564 wrote to memory of 2660	1564	2INJECTBYPASSBP.exe	29
PID 1564 wrote to memory of 2660	1564	2INJECTBYPASSBP.exe	29
PID 1564 wrote to memory of 2576	1564	2INJECTBYPASSBP.exe	31
PID 1564 wrote to memory of 2576	1564	2INJECTBYPASSBP.exe	31
PID 1564 wrote to memory of 2576	1564	2INJECTBYPASSBP.exe	31
PID 1564 wrote to memory of 2576	1564	2INJECTBYPASSBP.exe	31
PID 2576 wrote to memory of 2616	2576	njrat client.exe	32
PID 2576 wrote to memory of 2616	2576	njrat client.exe	32
PID 2576 wrote to memory of 2616	2576	njrat client.exe	32
PID 2576 wrote to memory of 2616	2576	njrat client.exe	32
PID 2576 wrote to memory of 2428	2576	njrat client.exe	34
PID 2576 wrote to memory of 2428	2576	njrat client.exe	34
PID 2576 wrote to memory of 2428	2576	njrat client.exe	34
PID 2576 wrote to memory of 2428	2576	njrat client.exe	34
PID 2428 wrote to memory of 2900	2428	realtek.exe	35
PID 2428 wrote to memory of 2900	2428	realtek.exe	35
PID 2428 wrote to memory of 2900	2428	realtek.exe	35
PID 2428 wrote to memory of 2900	2428	realtek.exe	35
PID 2576 wrote to memory of 2904	2576	njrat client.exe	36
PID 2576 wrote to memory of 2904	2576	njrat client.exe	36
PID 2576 wrote to memory of 2904	2576	njrat client.exe	36
PID 2576 wrote to memory of 2904	2576	njrat client.exe	36
PID 2904 wrote to memory of 320	2904	cmd.exe	39
PID 2904 wrote to memory of 320	2904	cmd.exe	39
PID 2904 wrote to memory of 320	2904	cmd.exe	39
PID 2904 wrote to memory of 320	2904	cmd.exe	39

C:\Users\Admin\AppData\Local\Temp\2INJECTBYPASSBP.exe
"C:\Users\Admin\AppData\Local\Temp\2INJECTBYPASSBP.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHcAdwBiACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAG4AcQBsACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGIAeABuACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAG0AbQB3ACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- C:\Users\Admin\njrat client.exe
  "C:\Users\Admin\njrat client.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc onstart /mo 1 /tn nyan /tr C:\Users\Admin\realtek.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2616
- - C:\Users\Admin\realtek.exe
    "C:\Users\Admin\realtek.exe"
    3⤵
    - 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:2428
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc onstart /mo 1 /tn nyan /tr C:\Users\Admin\realtek.exe
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2900
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 5 & Del "C:\Users\Admin\njrat client.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2904
  - - C:\Windows\SysWOW64\choice.exe
      choice /C Y /N /D Y /T 5
      4⤵
      System Location Discovery: System Language Discovery
      PID:320

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

Obfuscated Files or Information

T1027

Command Obfuscation

T1027.010

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\njrat client.exe

Filesize
61KB

MD5
2e035b66646cbe48b7258081d5c8015c

SHA1
3f97c139013951c074516f7f3e5336f68a55e9b0

SHA256
2758dde61d7d514e5154ae6c54ea12514f0d16a14e4849e711a958b253e6642f

SHA512
7cd2d03e92fca485565548ec32fe1b971fb49faa120affd3ebfcc95ceaac3f9492aa2c712f56f425651b33e61938e52398aa0223b109cca855c51e3e65ba3d31

Download Submit
memory/1564-0-0x000007FEF57E3000-0x000007FEF57E4000-memory.dmp

Filesize
4KB

Download
memory/1564-1-0x00000000000C0000-0x00000000000EA000-memory.dmp

Filesize
168KB

Download
memory/1564-2-0x000007FEF57E0000-0x000007FEF61CC000-memory.dmp

Filesize
9.9MB

Download
memory/1564-13-0x000007FEF57E0000-0x000007FEF61CC000-memory.dmp

Filesize
9.9MB

Download
memory/2428-24-0x0000000001240000-0x0000000001256000-memory.dmp

Filesize
88KB

Download
memory/2576-16-0x0000000000030000-0x0000000000046000-memory.dmp

Filesize
88KB

Download
memory/2660-15-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2660-14-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download