Overview

overview

10

Static

static

10

rt.exe

windows7-x64

10

rt.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04/03/2025, 15:05

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General

  • Target

    rt.exe

  • Size

    37KB

  • MD5

    71f33744ecc3c8081c3aace847093b11

  • SHA1

    195bffaacc78ae7413ff8e171d9b2787d4642cc0

  • SHA256

    bdfb9bc4ada7e0f8ad5a38dd25427358c07faf7e2b1eb5094ffd5d6c678c3b9e

  • SHA512

    d9cd1c8c6c91d6bc37af0589aaaee85708d23bb47386968b97cd4fdf526fde4441404b9c2d28f271589f140f2db2ecf1dbe98a0f374abdff2d727060ffc7c6ad

  • SSDEEP

    384:eIoMiLzBndznNCyMGm36ePb9cGcPdhrAF+rMRTyN/0L+EcoinblneHQM3epzXNNY:FiRNRMGm33JVc1hrM+rMRa8Nubqt

Score
10/10
njrathackeddefense_evasiondiscoverypersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

acer.tail843d69.ts.net:8080

Mutex

acda0b86727107ee4a9c230d7ddde1ae

Attributes
  • reg_key

    acda0b86727107ee4a9c230d7ddde1ae

  • splitter

    |'|'|

Signatures

  • Njrat family
    njrat
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_evasion
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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 3 IoCs

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

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rt.exe
    "C:\Users\Admin\AppData\Local\Temp\rt.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Users\Admin\AppData\Local\Temp\conhost.exe
      "C:\Users\Admin\AppData\Local\Temp\conhost.exe"
      2⤵
      • 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:2380
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\conhost.exe" "conhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2800

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

Exfiltration

Impact

Replay Monitor

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Downloads

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

    37KB

    MD5

    71f33744ecc3c8081c3aace847093b11

    SHA1

    195bffaacc78ae7413ff8e171d9b2787d4642cc0

    SHA256

    bdfb9bc4ada7e0f8ad5a38dd25427358c07faf7e2b1eb5094ffd5d6c678c3b9e

    SHA512

    d9cd1c8c6c91d6bc37af0589aaaee85708d23bb47386968b97cd4fdf526fde4441404b9c2d28f271589f140f2db2ecf1dbe98a0f374abdff2d727060ffc7c6ad

    Download Submit

  • memory/2380-12-0x0000000074720000-0x0000000074CCB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2380-10-0x0000000074720000-0x0000000074CCB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2380-22-0x0000000074720000-0x0000000074CCB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3016-0-0x0000000074721000-0x0000000074722000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3016-1-0x0000000074720000-0x0000000074CCB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3016-2-0x0000000074720000-0x0000000074CCB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/3016-11-0x0000000074720000-0x0000000074CCB000-memory.dmp

    Filesize

    5.7MB

    Download