njrat | 233f9f88c16fb185eb91f4afc116b808eb8fa5fd0cf1b3d3a92ec6732c56314b

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19-10-2024 14:05

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General

Target

Bootstrapper.exe
Size

19.0MB
MD5

4581b2e238f1dad629dc72c168b2be8e
SHA1

74dce1860065aad35cb68115545bdf862bddb775
SHA256

233f9f88c16fb185eb91f4afc116b808eb8fa5fd0cf1b3d3a92ec6732c56314b
SHA512

dcea04ffffdf35107a0cd6998eaef3f91270985c80028c206f59ae7d9b193defb3089826a7d1118391f849618904fdf7e77621348531b711d2eac89f422d132a
SSDEEP

24576:tigOpgzfDfMSCWk6/SCOqZkHIyGigOpgzfDfMSCWk6/SCOqZkHIy:dB5CW9/SCzhycB5CW9/SCzhy

Score

10^/10

njrat hacked defense_evasion discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

hakim32.ddns.net:2000

86.1.93.186:25565

Mutex

7b8566fe52762c19d1b844b254fc8d30

Attributes

reg_key
7b8566fe52762c19d1b844b254fc8d30
splitter
|'|'|

Signatures

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
1740	netsh.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7b8566fe52762c19d1b844b254fc8d30Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7b8566fe52762c19d1b844b254fc8d30Windows Update.exe	server.exe

Executes dropped EXE 4 IoCs

pid	Process
1496	BootstrapperV1.22.exe
2692	svchost.exe
1196	Process not Found
2852	server.exe

Loads dropped DLL 11 IoCs

pid	Process
2536	Bootstrapper.exe
2024	Process not Found
2536	Bootstrapper.exe
2536	Bootstrapper.exe
2692	svchost.exe
2692	svchost.exe
2496	WerFault.exe
2496	WerFault.exe
2496	WerFault.exe
2496	WerFault.exe
2496	WerFault.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

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	server.exe
File opened for modification	C:\autorun.inf	server.exe
File created	F:\autorun.inf	server.exe
File opened for modification	F:\autorun.inf	server.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Explower.exe	server.exe
File opened for modification	C:\Windows\SysWOW64\Explower.exe	server.exe

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 5 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	Bootstrapper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2808	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1632	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2852	server.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	powershell.exe
Token: SeDebugPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: SeIncreaseQuotaPrivilege	1928	WMIC.exe
Token: SeSecurityPrivilege	1928	WMIC.exe
Token: SeTakeOwnershipPrivilege	1928	WMIC.exe
Token: SeLoadDriverPrivilege	1928	WMIC.exe
Token: SeSystemProfilePrivilege	1928	WMIC.exe
Token: SeSystemtimePrivilege	1928	WMIC.exe
Token: SeProfSingleProcessPrivilege	1928	WMIC.exe
Token: SeIncBasePriorityPrivilege	1928	WMIC.exe
Token: SeCreatePagefilePrivilege	1928	WMIC.exe
Token: SeBackupPrivilege	1928	WMIC.exe
Token: SeRestorePrivilege	1928	WMIC.exe
Token: SeShutdownPrivilege	1928	WMIC.exe
Token: SeDebugPrivilege	1928	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1928	WMIC.exe
Token: SeRemoteShutdownPrivilege	1928	WMIC.exe
Token: SeUndockPrivilege	1928	WMIC.exe
Token: SeManageVolumePrivilege	1928	WMIC.exe
Token: 33	1928	WMIC.exe
Token: 34	1928	WMIC.exe
Token: 35	1928	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1928	WMIC.exe
Token: SeSecurityPrivilege	1928	WMIC.exe
Token: SeTakeOwnershipPrivilege	1928	WMIC.exe
Token: SeLoadDriverPrivilege	1928	WMIC.exe
Token: SeSystemProfilePrivilege	1928	WMIC.exe
Token: SeSystemtimePrivilege	1928	WMIC.exe
Token: SeProfSingleProcessPrivilege	1928	WMIC.exe
Token: SeIncBasePriorityPrivilege	1928	WMIC.exe
Token: SeCreatePagefilePrivilege	1928	WMIC.exe
Token: SeBackupPrivilege	1928	WMIC.exe
Token: SeRestorePrivilege	1928	WMIC.exe
Token: SeShutdownPrivilege	1928	WMIC.exe
Token: SeDebugPrivilege	1928	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1928	WMIC.exe
Token: SeRemoteShutdownPrivilege	1928	WMIC.exe
Token: SeUndockPrivilege	1928	WMIC.exe
Token: SeManageVolumePrivilege	1928	WMIC.exe
Token: 33	1928	WMIC.exe
Token: 34	1928	WMIC.exe
Token: 35	1928	WMIC.exe
Token: SeDebugPrivilege	1496	BootstrapperV1.22.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe
Token: SeIncBasePriorityPrivilege	2852	server.exe
Token: 33	2852	server.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 1632	2536	Bootstrapper.exe	30
PID 2536 wrote to memory of 1632	2536	Bootstrapper.exe	30
PID 2536 wrote to memory of 1632	2536	Bootstrapper.exe	30
PID 2536 wrote to memory of 1632	2536	Bootstrapper.exe	30
PID 2536 wrote to memory of 1496	2536	Bootstrapper.exe	32
PID 2536 wrote to memory of 1496	2536	Bootstrapper.exe	32
PID 2536 wrote to memory of 1496	2536	Bootstrapper.exe	32
PID 2536 wrote to memory of 1496	2536	Bootstrapper.exe	32
PID 2536 wrote to memory of 2692	2536	Bootstrapper.exe	34
PID 2536 wrote to memory of 2692	2536	Bootstrapper.exe	34
PID 2536 wrote to memory of 2692	2536	Bootstrapper.exe	34
PID 2536 wrote to memory of 2692	2536	Bootstrapper.exe	34
PID 1496 wrote to memory of 2828	1496	BootstrapperV1.22.exe	35
PID 1496 wrote to memory of 2828	1496	BootstrapperV1.22.exe	35
PID 1496 wrote to memory of 2828	1496	BootstrapperV1.22.exe	35
PID 2828 wrote to memory of 2808	2828	cmd.exe	37
PID 2828 wrote to memory of 2808	2828	cmd.exe	37
PID 2828 wrote to memory of 2808	2828	cmd.exe	37
PID 2692 wrote to memory of 2852	2692	svchost.exe	38
PID 2692 wrote to memory of 2852	2692	svchost.exe	38
PID 2692 wrote to memory of 2852	2692	svchost.exe	38
PID 2692 wrote to memory of 2852	2692	svchost.exe	38
PID 2852 wrote to memory of 1740	2852	server.exe	39
PID 2852 wrote to memory of 1740	2852	server.exe	39
PID 2852 wrote to memory of 1740	2852	server.exe	39
PID 2852 wrote to memory of 1740	2852	server.exe	39
PID 1496 wrote to memory of 2028	1496	BootstrapperV1.22.exe	41
PID 1496 wrote to memory of 2028	1496	BootstrapperV1.22.exe	41
PID 1496 wrote to memory of 2028	1496	BootstrapperV1.22.exe	41
PID 2028 wrote to memory of 1928	2028	cmd.exe	43
PID 2028 wrote to memory of 1928	2028	cmd.exe	43
PID 2028 wrote to memory of 1928	2028	cmd.exe	43
PID 1496 wrote to memory of 2496	1496	BootstrapperV1.22.exe	45
PID 1496 wrote to memory of 2496	1496	BootstrapperV1.22.exe	45
PID 1496 wrote to memory of 2496	1496	BootstrapperV1.22.exe	45

C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHIAbABkACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGwAZQBqACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGUAeQBmACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHQAYQB4ACMAPgA="
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1632
- C:\Users\Admin\AppData\Local\Temp\BootstrapperV1.22.exe
  "C:\Users\Admin\AppData\Local\Temp\BootstrapperV1.22.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1496
- - C:\Windows\system32\cmd.exe
    "cmd" /c ipconfig /all
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2828
  - - C:\Windows\system32\ipconfig.exe
      ipconfig /all
      4⤵
      Gathers network information
      PID:2808
- - C:\Windows\system32\cmd.exe
    "cmd" /c wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2028
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic nicconfig where (IPEnabled=TRUE) call SetDNSServerSearchOrder ("1.1.1.1", "1.0.0.1")
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1928
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 1496 -s 1128
    3⤵
    - Loads dropped DLL
    PID:2496
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2692
- - C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Drops autorun.inf file
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2852
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:1740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Command and Scripting Interpreter

T1059

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

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

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
2099bb64fd1770d321df364f99b658d1

SHA1
3124edeaa14c060becfa8b980ed77db15d56a9e3

SHA256
d53ce6bdbd0c3cb4596ac3103f15824570a9858da95f63cedf64cec11dc44e2d

SHA512
3481f2a02f7b1255ad0f3cd8a716de9c7414753b6f8657f0bf99738ff6623f8717469bc10e737d6c0d1d13846e726d50baeb5e8ef73efcfce7be5c63327c4895

Download Submit
\Users\Admin\AppData\Local\Temp\BootstrapperV1.22.exe

Filesize
800KB

MD5
2a4dcf20b82896be94eb538260c5fb93

SHA1
21f232c2fd8132f8677e53258562ad98b455e679

SHA256
ebbcb489171abfcfce56554dbaeacd22a15838391cbc7c756db02995129def5a

SHA512
4f1164b2312fb94b7030d6eb6aa9f3502912ffa33505f156443570fc964bfd3bb21ded3cf84092054e07346d2dce83a0907ba33f4ba39ad3fe7a78e836efe288

Download Submit
\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
93KB

MD5
053913a8ea56bc5973dd3aa48dfa0a57

SHA1
f291c838cac064afe19dc618df7dba91c71c5ec6

SHA256
d6147d18985d4ab04c8e23d1f755ba92765ea63daf8bb498b18dbd5586ce8a25

SHA512
31d52760f4ae13f57f87ab17124141e55560c52e41ed013d9739fb1b856f1b1f02ba2f23f0b1ca7640a2edcb5aadf6511160d2f65625db3951082e85e3e16643

Download Submit
memory/1496-19-0x0000000001280000-0x000000000134E000-memory.dmp

Filesize
824KB

Download