njrat | cf0b586b8bb3a236f839c3bef887406591bd95fdbef7d9cb2ad99fc127557833

Analysis

max time kernel
148s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-11-2024 01:21

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General

Target

Enigma.exe
Size

93KB
MD5

5a3fcabcbac79fd782d56cebf66cfcdf
SHA1

c65e6972ee7a04a4b485f657866038c56ca07811
SHA256

cf0b586b8bb3a236f839c3bef887406591bd95fdbef7d9cb2ad99fc127557833
SHA512

f679f54b27bcd326dcad7ba591ebc92d71dca9cc28f49b17200580a32c30127dfb241e8d67c79f5fbbab2bb5357ba5583a0b20a978938475f824ecc02167c634
SSDEEP

768:6Y3c9nD9O/pBcxYsbae6GIXb9pDX2t9zPL0OXLeuXxrjEtCdnl2pi1Rz4Rk3GsG9:a9xOx6baIa9ROj00ljEwzGi1dDiDZgS

Score

10^/10

njrat hacked discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

hakim32.ddns.net:2000

127.0.0.1:5552

Mutex

4e5d83e786e40074eef5a2bf33513b88

Attributes

reg_key
4e5d83e786e40074eef5a2bf33513b88
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Disables Task Manager via registry modification
evasion

Modifies Windows Firewall 2 TTPs 3 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2604	netsh.exe
800	netsh.exe
584	netsh.exe

Drops startup file 6 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\4e5d83e786e40074eef5a2bf33513b88Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4e5d83e786e40074eef5a2bf33513b88Windows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	server.exe

Loads dropped DLL 2 IoCs

pid	Process
2884	Enigma.exe
2884	Enigma.exe

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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Explower.exe	server.exe
File opened for modification	C:\Program Files (x86)\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 9 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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Enigma.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	server.exe

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe
Token: 33	2704	server.exe
Token: SeIncBasePriorityPrivilege	2704	server.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2704	2884	Enigma.exe	30
PID 2884 wrote to memory of 2704	2884	Enigma.exe	30
PID 2884 wrote to memory of 2704	2884	Enigma.exe	30
PID 2884 wrote to memory of 2704	2884	Enigma.exe	30
PID 2704 wrote to memory of 2604	2704	server.exe	31
PID 2704 wrote to memory of 2604	2704	server.exe	31
PID 2704 wrote to memory of 2604	2704	server.exe	31
PID 2704 wrote to memory of 2604	2704	server.exe	31
PID 2704 wrote to memory of 800	2704	server.exe	33
PID 2704 wrote to memory of 800	2704	server.exe	33
PID 2704 wrote to memory of 800	2704	server.exe	33
PID 2704 wrote to memory of 800	2704	server.exe	33
PID 2704 wrote to memory of 584	2704	server.exe	34
PID 2704 wrote to memory of 584	2704	server.exe	34
PID 2704 wrote to memory of 584	2704	server.exe	34
PID 2704 wrote to memory of 584	2704	server.exe	34

C:\Users\Admin\AppData\Local\Temp\Enigma.exe
"C:\Users\Admin\AppData\Local\Temp\Enigma.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops autorun.inf file
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2604
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:800
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

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

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
24e9e7d7eea4de90c8fc67ae1145abf2

SHA1
dd9bb46ccc6340ca892cf17ebe32b9bdbadee2d1

SHA256
bd6c1d15579254e8879ada07376f93cb2e959f45670374892fde2efaf4194f6c

SHA512
5572afd61c7ba666515a987f23ad0a05ab753bdc28cfa492adb30200207427a4a38699d3b7981e0750414775a4ce72a209511951d38a8673c709b08774fca01f

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

Filesize
93KB

MD5
5a3fcabcbac79fd782d56cebf66cfcdf

SHA1
c65e6972ee7a04a4b485f657866038c56ca07811

SHA256
cf0b586b8bb3a236f839c3bef887406591bd95fdbef7d9cb2ad99fc127557833

SHA512
f679f54b27bcd326dcad7ba591ebc92d71dca9cc28f49b17200580a32c30127dfb241e8d67c79f5fbbab2bb5357ba5583a0b20a978938475f824ecc02167c634

Download Submit
memory/2704-15-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2704-16-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2704-45-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2884-0-0x0000000074741000-0x0000000074742000-memory.dmp

Filesize
4KB

Download
memory/2884-1-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2884-2-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2884-14-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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