njrat | c4b379abbc9f203fc3f04a49eee54d85863132d5b3c4c8f39ebbd01da38849b9

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
05/01/2024, 20:53

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General

Target

start.exe
Size

93KB
MD5

eb12259817bf7f95c42d92cb4407a6e0
SHA1

2c138665f5e4ac1c97b6003ecd7850c4a679842d
SHA256

c4b379abbc9f203fc3f04a49eee54d85863132d5b3c4c8f39ebbd01da38849b9
SHA512

5e37b4714ab321c104d9707f45c08b53d9e11bf0e5548218bc02b3087505af7eb01a5aae09f4550006b25e49f52c8ceefb026e45554676494f16074992490b5d
SSDEEP

768:HY3mE7yZnDQMMpAZrGSt6udttXy4slhkGJiXxrjEtCdnl2pi1Rz4Rk3YsGdp9gS7:TE+ZD3rGWNd7yhkhjEwzGi1dDwD9gS

Score

10^/10

njrat hacked evasion trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

hakim32.ddns.net:2000

2.tcp.eu.ngrok.io:13557

Mutex

1390b5de6f068f3d96db87b4801110ec

Attributes

reg_key
1390b5de6f068f3d96db87b4801110ec
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 1 TTPs 2 IoCs

evasion

Windows Service

T1543.003

pid	Process
2176	netsh.exe
3916	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	start.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\1390b5de6f068f3d96db87b4801110ecWindows Update.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1390b5de6f068f3d96db87b4801110ecWindows 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
4680	server.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4104	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe
4680	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4680	server.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

description	pid	Process
Token: SeDebugPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe
Token: 33	4680	server.exe
Token: SeIncBasePriorityPrivilege	4680	server.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 4680	4656	start.exe	48
PID 4656 wrote to memory of 4680	4656	start.exe	48
PID 4656 wrote to memory of 4680	4656	start.exe	48
PID 4680 wrote to memory of 2176	4680	server.exe	67
PID 4680 wrote to memory of 2176	4680	server.exe	67
PID 4680 wrote to memory of 2176	4680	server.exe	67
PID 4680 wrote to memory of 3916	4680	server.exe	110
PID 4680 wrote to memory of 3916	4680	server.exe	110
PID 4680 wrote to memory of 3916	4680	server.exe	110
PID 4680 wrote to memory of 3580	4680	server.exe	109
PID 4680 wrote to memory of 3580	4680	server.exe	109
PID 4680 wrote to memory of 3580	4680	server.exe	109
PID 3580 wrote to memory of 4104	3580	cmd.exe	107
PID 3580 wrote to memory of 4104	3580	cmd.exe	107
PID 3580 wrote to memory of 4104	3580	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- 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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4680
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:2176
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /c ping 0 -n 2 & del "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3580
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Modifies Windows Firewall
    PID:3916

C:\Windows\SysWOW64\PING.EXE
ping 0 -n 2
1⤵
- Runs ping.exe
PID:4104

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

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
93KB

MD5
eb12259817bf7f95c42d92cb4407a6e0

SHA1
2c138665f5e4ac1c97b6003ecd7850c4a679842d

SHA256
c4b379abbc9f203fc3f04a49eee54d85863132d5b3c4c8f39ebbd01da38849b9

SHA512
5e37b4714ab321c104d9707f45c08b53d9e11bf0e5548218bc02b3087505af7eb01a5aae09f4550006b25e49f52c8ceefb026e45554676494f16074992490b5d

Download Submit
memory/4656-14-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4656-1-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4656-2-0x00000000013F0000-0x0000000001400000-memory.dmp

Filesize
64KB

Download
memory/4656-0-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4680-13-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4680-16-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4680-15-0x00000000017A0000-0x00000000017B0000-memory.dmp

Filesize
64KB

Download
memory/4680-54-0x00000000017A0000-0x00000000017B0000-memory.dmp

Filesize
64KB

Download
memory/4680-56-0x00000000017A0000-0x00000000017B0000-memory.dmp

Filesize
64KB

Download
memory/4680-57-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4680-55-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/4680-58-0x00000000017A0000-0x00000000017B0000-memory.dmp

Filesize
64KB

Download
memory/4680-61-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download