njrat | 0ea9fe75f4b92fa4db859243bc898d62b20b974dca80fc0558a0afb418564930

General

Target

Server.exe
Size

93KB
MD5

478f6b8a8f1a60a3ed7d7158c7870433
SHA1

6143a06c120d6a238d13fd7a63acd99fe96082a2
SHA256

0ea9fe75f4b92fa4db859243bc898d62b20b974dca80fc0558a0afb418564930
SHA512

bb4ec3dc99a860dc6686980497b6b2dfdef9988104ed2cb3d62285e8a3d3359fedc3230775655041ebb3e5bd033d52727c88385cf19d9240d7fbe7f3e866b285
SSDEEP

768:uY3Wbi6xgrKSMZAZL28d2WmtlX+jRoI++WqXxrjEtCdnl2pi1Rz4Rk3JhsGdpSgM:wbvxg1L2AZmDO+2jEwzGi1dDLDSgS

Score

10^/10

njrat hacked discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

hakim32.ddns.net:2000

66.29.28.194:25565

Mutex

d0f07874cbb7a0a6f92d29b71f7e122d

Attributes

reg_key
d0f07874cbb7a0a6f92d29b71f7e122d
splitter
|'|'|

Signatures

Njrat family
njrat
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
2808	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\d0f07874cbb7a0a6f92d29b71f7e122dWindows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d0f07874cbb7a0a6f92d29b71f7e122dWindows Update.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	server.exe

Loads dropped DLL 2 IoCs

pid	Process
2036	Server.exe
2036	Server.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 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

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 3 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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	server.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	server.exe
Token: 33	2524	server.exe
Token: SeIncBasePriorityPrivilege	2524	server.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2524	2036	Server.exe	30
PID 2036 wrote to memory of 2524	2036	Server.exe	30
PID 2036 wrote to memory of 2524	2036	Server.exe	30
PID 2036 wrote to memory of 2524	2036	Server.exe	30
PID 2524 wrote to memory of 2808	2524	server.exe	32
PID 2524 wrote to memory of 2808	2524	server.exe	32
PID 2524 wrote to memory of 2808	2524	server.exe	32
PID 2524 wrote to memory of 2808	2524	server.exe	32

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Roaming\server.exe
  "C:\Users\Admin\AppData\Roaming\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Drops autorun.inf file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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\Roaming\server.exe

Filesize
93KB

MD5
478f6b8a8f1a60a3ed7d7158c7870433

SHA1
6143a06c120d6a238d13fd7a63acd99fe96082a2

SHA256
0ea9fe75f4b92fa4db859243bc898d62b20b974dca80fc0558a0afb418564930

SHA512
bb4ec3dc99a860dc6686980497b6b2dfdef9988104ed2cb3d62285e8a3d3359fedc3230775655041ebb3e5bd033d52727c88385cf19d9240d7fbe7f3e866b285

Download Submit
memory/2036-0-0x0000000074C01000-0x0000000074C02000-memory.dmp

Filesize
4KB

Download
memory/2036-1-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2036-2-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2036-15-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2524-14-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download
memory/2524-16-0x0000000074C00000-0x00000000751AB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads