njrat | bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-10-2024 19:07

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General

Target

bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe
Size

93KB
MD5

4a738bcc7d3f87bfc4fb036aaeae2d30
SHA1

320f2d0131365e2b3f35449d862ec398b7d678de
SHA256

bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1
SHA512

9c6cb71cdd51d45fb4f1e075b3edbe29267dcd65609059560db656eba331e0634f359c4cf8e43cf24812c70d981a60439c83d51f21c6df977684e38bfc2d4b4b
SSDEEP

1536:OKjJD/HBZbszKu9AZpd7r1jEwzGi1dDyDggS:OKCzK4AZ3HCi1dsJ

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

resource-essays.gl.at.ply.gg:22131

Mutex

68b83221d2442765871a07d141d8ff45

Attributes

reg_key
68b83221d2442765871a07d141d8ff45
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

Processes:

netsh.exenetsh.exenetsh.exe

pid	Process
2840	netsh.exe
2960	netsh.exe
2948	netsh.exe

Drops startup file 6 IoCs

Processes:

server.exe

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe	server.exe
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\68b83221d2442765871a07d141d8ff45Windows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\68b83221d2442765871a07d141d8ff45Windows Update.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe	server.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid	Process
2768	server.exe

Loads dropped DLL 2 IoCs

Processes:

bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe

pid	Process
1960	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe
1960	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.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

Processes:

server.exe

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

Processes:

server.exe

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

Processes:

server.exe

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

Processes:

netsh.exenetsh.exenetsh.exe

description	ioc	Process
Key value enumerated	\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
Key queried	\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 queried	\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

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

Processes:

netsh.exenetsh.exebcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exeserver.exenetsh.exe

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	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.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: EnumeratesProcesses 64 IoCs

Processes:

server.exe

pid	Process
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe
2768	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

server.exe

pid	Process
2768	server.exe

Suspicious use of AdjustPrivilegeToken 29 IoCs

Processes:

server.exe

description	pid	Process
Token: SeDebugPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe
Token: 33	2768	server.exe
Token: SeIncBasePriorityPrivilege	2768	server.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exeserver.exe

description	pid	Process	procid_target
PID 1960 wrote to memory of 2768	1960	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe	30
PID 1960 wrote to memory of 2768	1960	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe	30
PID 1960 wrote to memory of 2768	1960	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe	30
PID 1960 wrote to memory of 2768	1960	bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe	30
PID 2768 wrote to memory of 2840	2768	server.exe	31
PID 2768 wrote to memory of 2840	2768	server.exe	31
PID 2768 wrote to memory of 2840	2768	server.exe	31
PID 2768 wrote to memory of 2840	2768	server.exe	31
PID 2768 wrote to memory of 2960	2768	server.exe	33
PID 2768 wrote to memory of 2960	2768	server.exe	33
PID 2768 wrote to memory of 2960	2768	server.exe	33
PID 2768 wrote to memory of 2960	2768	server.exe	33
PID 2768 wrote to memory of 2948	2768	server.exe	34
PID 2768 wrote to memory of 2948	2768	server.exe	34
PID 2768 wrote to memory of 2948	2768	server.exe	34
PID 2768 wrote to memory of 2948	2768	server.exe	34

C:\Users\Admin\AppData\Local\Temp\bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe
"C:\Users\Admin\AppData\Local\Temp\bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1960
- 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: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2768
- - 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:2840
- - 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:2960
- - 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:2948

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

Replay Monitor

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Downloads

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

Filesize
5B

MD5
7eb860abfe2281298575b5216ef42bc6

SHA1
d4dfd7ac22dcd07da34306c40b4e5367a969cda5

SHA256
83d46461bf45f00cb4fc5df9679b2bd82dbf54eeb022ca1711eefb4b2e7b7689

SHA512
427bfc41f0514ee10d400eea38f22f6fac6f9d5ecd84ad7adb1161ff9355e47c04ff411e172fafcd23c137ad1528ed2f2cb95d247613ae5550c089633f18994d

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

Filesize
93KB

MD5
4a738bcc7d3f87bfc4fb036aaeae2d30

SHA1
320f2d0131365e2b3f35449d862ec398b7d678de

SHA256
bcce94cbcb8b360dfc91528e041598c2c5833aecd8b4800f5c3a8ae806ca6df1

SHA512
9c6cb71cdd51d45fb4f1e075b3edbe29267dcd65609059560db656eba331e0634f359c4cf8e43cf24812c70d981a60439c83d51f21c6df977684e38bfc2d4b4b

Download Submit
memory/1960-0-0x0000000074891000-0x0000000074892000-memory.dmp

Filesize
4KB

Download
memory/1960-1-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/1960-2-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/1960-14-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/2768-15-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/2768-16-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download
memory/2768-54-0x0000000074890000-0x0000000074E3B000-memory.dmp

Filesize
5.7MB

Download