Overview

overview

10

Static

static

10

Server.exe

windows10-2004-x64

8

Server.exe

windows10-ltsc 2021-x64

10

Server.exe

windows11-21h2-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250113-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    23/01/2025, 18:30

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General

  • Target

    Server.exe

  • Size

    93KB

  • MD5

    96ce0bd41a130c362b1166c770960287

  • SHA1

    01bfe9caf709cb3ab3366fd7cd28a5dd95ea4b30

  • SHA256

    4fd30f330a4150ba28848121c9c0e99c98b198b6abeeceba5c08024c0ab9a851

  • SHA512

    933e6af32e68822eef6bfd941a7f027eb8aeceb745b0fb091a79aa8e327ca955e8af20e4032debbee43233b03287321abab3ca95ffc2da127ac299fada9c78c1

  • SSDEEP

    1536:ZajFQWqkqqoLc2mLiIjEwzGi1dDyDMgS:ZajmkqqoA28i5i1dkl

Score
10/10
njrathackeddefense_evasiondiscoverypersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

hakim32.ddns.net:2000

193.123.88.61:4444
Mutex

9026faf0d7bc26a38f2e53c5ac0d583b

Attributes
  • reg_key

    9026faf0d7bc26a38f2e53c5ac0d583b

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Disables Task Manager via registry modification
    defense_evasion
  • Modifies Windows Firewall 2 TTPs 3 IoCs
    defense_evasion
  • Drops startup file 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops autorun.inf file 1 TTPs 4 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • 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.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Server.exe
    "C:\Users\Admin\AppData\Local\Temp\Server.exe"
    1⤵
    • Drops startup file
    • 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:3620
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:684
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe"
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:2924
    • C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:4272
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\Admin\AppData\Local\Temp/StUpdate.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1548
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp/StUpdate.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3532
  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp/StUpdate.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

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

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Credential Access

Discovery

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

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\StUpdate.exe.log
    Filesize

    408B

    MD5

    11c924dd7e95b6c1243d3dc6a6cda57d

    SHA1

    dc5becbb4ba7c94037c13de7163b541f4dfe0b7b

    SHA256

    18ebe71e164d362b1c0464dda0cb3269b2940c40abd588bde37d92c81263ba52

    SHA512

    dd021f43ce21d1fb35119fa9303b09281365ca676b6e944de844b397dd407cee9b17b740220bb09d024ffb6e1acf45d4c41ea4101e6cb011f7a1fa9cbf8e2432

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\StUpdate.exe
    Filesize

    93KB

    MD5

    96ce0bd41a130c362b1166c770960287

    SHA1

    01bfe9caf709cb3ab3366fd7cd28a5dd95ea4b30

    SHA256

    4fd30f330a4150ba28848121c9c0e99c98b198b6abeeceba5c08024c0ab9a851

    SHA512

    933e6af32e68822eef6bfd941a7f027eb8aeceb745b0fb091a79aa8e327ca955e8af20e4032debbee43233b03287321abab3ca95ffc2da127ac299fada9c78c1

    Download Submit

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

    5B

    MD5

    c2844bc9e1bd64168a727b0680ae4d90

    SHA1

    7bb263540de557f5a4e09c6c78b7dbb314a0df9a

    SHA256

    9c9701ab918368b615fc6a0dbeb5efa286a232d751982ae70b48ad6914bf01e5

    SHA512

    360953bb20d91539022fcb1becf4638970c4452816797a8dca65e3ae4a542302e6e89f0828087caaa63a0750aa78605f8034da7c8663fa4fc677c8f3e53655ed

    Download Submit

  • memory/3620-0-0x0000000074612000-0x0000000074613000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3620-1-0x0000000074610000-0x0000000074BC1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3620-2-0x0000000074610000-0x0000000074BC1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3620-9-0x0000000074610000-0x0000000074BC1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3620-8-0x0000000074612000-0x0000000074613000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3620-10-0x0000000074610000-0x0000000074BC1000-memory.dmp

    Filesize

    5.7MB

    Download