njrat | 8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84

General

Target

8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe
Size

37KB
MD5

63646257033a6df3325b6b24e3051680
SHA1

fede036f9204b51561aa302364e87efd62f20fea
SHA256

8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84
SHA512

895e6e24081e370baa3232040f06333fd8bc9437ee8374b415a5dd8b94ccbd84eae5e26c222006a442ff01a46d83e0ecf6263501df2fae2eb6dedfa1612ca028
SSDEEP

384:NIROIiuPjtD+P3V+y0b1gBUtPr2s2Mf/rAF+rMRTyN/0L+EcoinblneHQM3epzXV:iRnmV10b1gBUt6lM3rM+rMRa8Nulbt

Score

10^/10

njrat game discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

game

C2

6.tcp.eu.ngrok.io:13739

Mutex

86e44710278beb6caa0bbd364fe8064e

Attributes

reg_key
86e44710278beb6caa0bbd364fe8064e
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
2828	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\86e44710278beb6caa0bbd364fe8064e.exe	game.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\86e44710278beb6caa0bbd364fe8064e.exe	game.exe

Executes dropped EXE 1 IoCs

pid	Process
2496	game.exe

Loads dropped DLL 1 IoCs

pid	Process
2016	8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.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\86e44710278beb6caa0bbd364fe8064e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\game.exe\" .."	game.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\86e44710278beb6caa0bbd364fe8064e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\game.exe\" .."	game.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
48	6.tcp.eu.ngrok.io
2	6.tcp.eu.ngrok.io
18	6.tcp.eu.ngrok.io
22	6.tcp.eu.ngrok.io

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 4 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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	game.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2852	taskkill.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2496	game.exe

Suspicious use of AdjustPrivilegeToken 28 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	game.exe
Token: SeDebugPrivilege	2852	taskkill.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe
Token: 33	2496	game.exe
Token: SeIncBasePriorityPrivilege	2496	game.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 2496	2016	8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe	31
PID 2016 wrote to memory of 2496	2016	8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe	31
PID 2016 wrote to memory of 2496	2016	8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe	31
PID 2016 wrote to memory of 2496	2016	8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe	31
PID 2496 wrote to memory of 2828	2496	game.exe	32
PID 2496 wrote to memory of 2828	2496	game.exe	32
PID 2496 wrote to memory of 2828	2496	game.exe	32
PID 2496 wrote to memory of 2828	2496	game.exe	32
PID 2496 wrote to memory of 2852	2496	game.exe	33
PID 2496 wrote to memory of 2852	2496	game.exe	33
PID 2496 wrote to memory of 2852	2496	game.exe	33
PID 2496 wrote to memory of 2852	2496	game.exe	33

C:\Users\Admin\AppData\Local\Temp\8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe
"C:\Users\Admin\AppData\Local\Temp\8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\game.exe
  "C:\Users\Admin\AppData\Local\Temp\game.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\game.exe" "game.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2828
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\game.exe

Filesize
37KB

MD5
63646257033a6df3325b6b24e3051680

SHA1
fede036f9204b51561aa302364e87efd62f20fea

SHA256
8ee5901e793a7fd23b84b5c8c3133730f40add0e2723ccd1ea066a72fdc9ad84

SHA512
895e6e24081e370baa3232040f06333fd8bc9437ee8374b415a5dd8b94ccbd84eae5e26c222006a442ff01a46d83e0ecf6263501df2fae2eb6dedfa1612ca028

Download Submit
memory/2016-0-0x0000000074541000-0x0000000074542000-memory.dmp

Filesize
4KB

Download
memory/2016-1-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2016-2-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2016-11-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2496-10-0x0000000074540000-0x0000000074AEB000-memory.dmp

Filesize
5.7MB

Download
memory/2496-13-0x0000000074540000-0x0000000074AEB000-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