Overview

overview

10

Static

static

3

NjRat Loader.exe

windows7-x64

10

NjRat Loader.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    06-12-2024 08:44

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General

  • Target

    NjRat Loader.exe

  • Size

    2.3MB

  • MD5

    e4631d6e2fee44de27d84aff1ce7c7a5

  • SHA1

    d16bc9a9e7249e8f5b519cabbaafa0f1462bccdd

  • SHA256

    008478ff6c70392e5ecf933881df2c44f31fdf76ad88c407191233cb39de6528

  • SHA512

    fdba6e4c6ce13996f05bfa0680383c809b177aedbd300ce42e7f378fd8ad1a1b2cfbc6342b5f0f64d03142bc25f3cf538829cbd01c539ec4c1477121b8f6e8be

  • SSDEEP

    49152:x842+3u+OurHvP4yU222Yd/2bIKxwc6XfnVmAfIg39EJ:x8gTdrHvPfRn8ulx36PrNQ

Score
10/10
njrathackeddiscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

2.tcp.eu.ngrok.io:16299

Mutex

6d90d9a2ca0b357d5f629d5cdbe8d0d2

Attributes
  • reg_key

    6d90d9a2ca0b357d5f629d5cdbe8d0d2

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

    persistenceprivilege_escalation
  • 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
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NjRat Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\NjRat Loader.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2340
    • C:\Users\Admin\AppData\Local\Temp\NjRAT.exe
      "C:\Users\Admin\AppData\Local\Temp\NjRAT.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Users\Admin\AppData\Local\Temp\svchost.exe
        "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops autorun.inf file
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1084
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\svchost.exe" "svchost.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:2368
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /IM ProcessHacker.exe
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1
T1091

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

1
T1562.004

Modify Registry

1
T1112

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

Web Service

1
T1102

Exfiltration

Impact

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Downloads

  • \Users\Admin\AppData\Local\Temp\NjRAT.exe
    Filesize

    37KB

    MD5

    5c02e4b0ad99d924aa9eed7d706bfe12

    SHA1

    e1ca2e74e7f873584e6b6d1d0f3d1d2dabc5713a

    SHA256

    0c41f773d5abffd1c52f008c3f144155cb7e331816a5c3af1fc42683eab51263

    SHA512

    ab2fd5cc9da5f8fb2c8836a9063d8c15db64847a6028f7ac0b330305d24905f8025bbe5cb02c7de5bd0ee63b0173203d496292887ab90926ba4082ac066f5508

    Download Submit

  • memory/2760-38-0x00000000735A1000-0x00000000735A2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2760-39-0x00000000735A0000-0x0000000073B4B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2760-40-0x00000000735A0000-0x0000000073B4B000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2760-48-0x00000000735A0000-0x0000000073B4B000-memory.dmp

    Filesize

    5.7MB

    Download