Overview

overview

10

Static

static

10

cnct.exe

windows7-x64

10

cnct.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16-12-2024 06:20

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General

  • Target

    cnct.exe

  • Size

    37KB

  • MD5

    cbc4f2b569739e02f228eb0b3552e6d4

  • SHA1

    16311eee886788bf935b1cc262677c911720dd67

  • SHA256

    d4b85844f374cf0fc56326afea865c2b9c773c60bfffe0870795a7a4e8b0201f

  • SHA512

    abb9bb78ded6dd5f2583466628b4c64515ff1941d6f39f232a380bb207358fcb99c50e019614bd8d95ca152442fcd8796605d1aa5db365e168645804c1e58ab7

  • SSDEEP

    768:g20DwODZX8f22s9aVIrM+rMRa8NuSNvt:g/TZM+2sEVT+gRJNVN

Score
10/10
njratdock.exediscoveryevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

dock.exe

C2

pool-tournaments.gl.at.ply.gg:7445

Mutex

ec1d783eda90ea4f1a73218af4fd58aa

Attributes
  • reg_key

    ec1d783eda90ea4f1a73218af4fd58aa

  • 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 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\cnct.exe
    "C:\Users\Admin\AppData\Local\Temp\cnct.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2312
    • C:\Users\Admin\AppData\Local\Temp\dlscord.exe
      "C:\Users\Admin\AppData\Local\Temp\dlscord.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:2328
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dlscord.exe" "dlscord.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2804

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

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

    37KB

    MD5

    cbc4f2b569739e02f228eb0b3552e6d4

    SHA1

    16311eee886788bf935b1cc262677c911720dd67

    SHA256

    d4b85844f374cf0fc56326afea865c2b9c773c60bfffe0870795a7a4e8b0201f

    SHA512

    abb9bb78ded6dd5f2583466628b4c64515ff1941d6f39f232a380bb207358fcb99c50e019614bd8d95ca152442fcd8796605d1aa5db365e168645804c1e58ab7

    Download Submit

  • memory/2312-0-0x0000000074F01000-0x0000000074F02000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2312-1-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2312-2-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2312-12-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2328-10-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2328-11-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2328-22-0x0000000074F00000-0x00000000754AB000-memory.dmp

    Filesize

    5.7MB

    Download