Overview

overview

10

Static

static

3

ecbd6b6eb4...2N.exe

windows7-x64

10

ecbd6b6eb4...2N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-09-2024 23:52

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General

  • Target

    ecbd6b6eb454ce86d7e6ab1ca22f8919f6b595193d2f04e093dcf4c90b8d0d12N.exe

  • Size

    135KB

  • MD5

    33bf20431181a09f3f1ec1aae1d69da0

  • SHA1

    aa1e9893361614bb82b3a1a8a94a84b8970da674

  • SHA256

    ecbd6b6eb454ce86d7e6ab1ca22f8919f6b595193d2f04e093dcf4c90b8d0d12

  • SHA512

    92fd38965c19daefaac896280e861c85652e4e227ad47a860ddc4a2f7c6cd3b489b9020ca38e627b813bc8bf7755c9f1d561490c228914e774aebbcefe46fbd9

  • SSDEEP

    3072:xVq7Ganmup+nXhrn+FuKqCg/DREWU+gZCo5:LSmfnXhT+VqCgdfUvZN5

Score
10/10
njratchromeevasionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

chrome

C2

147.185.221.21:43492

Mutex

408747fd467c7d10dbd55bb8e0781708

Attributes
  • reg_key

    408747fd467c7d10dbd55bb8e0781708

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 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
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ecbd6b6eb454ce86d7e6ab1ca22f8919f6b595193d2f04e093dcf4c90b8d0d12N.exe
    "C:\Users\Admin\AppData\Local\Temp\ecbd6b6eb454ce86d7e6ab1ca22f8919f6b595193d2f04e093dcf4c90b8d0d12N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2364
    • C:\Users\Admin\chorme.exe
      "C:\Users\Admin\chorme.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops autorun.inf file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4728
      • C:\Windows\SYSTEM32\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\chorme.exe" "chorme.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        PID:3020

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\chorme.exe
    Filesize

    135KB

    MD5

    33bf20431181a09f3f1ec1aae1d69da0

    SHA1

    aa1e9893361614bb82b3a1a8a94a84b8970da674

    SHA256

    ecbd6b6eb454ce86d7e6ab1ca22f8919f6b595193d2f04e093dcf4c90b8d0d12

    SHA512

    92fd38965c19daefaac896280e861c85652e4e227ad47a860ddc4a2f7c6cd3b489b9020ca38e627b813bc8bf7755c9f1d561490c228914e774aebbcefe46fbd9

    Download Submit

  • memory/2364-3-0x000000001BEE0000-0x000000001BF86000-memory.dmp

    Filesize

    664KB

    Download

  • memory/2364-2-0x000000001B960000-0x000000001BE2E000-memory.dmp

    Filesize

    4.8MB

    Download

  • memory/2364-0-0x00007FF810FE5000-0x00007FF810FE6000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2364-4-0x000000001BFE0000-0x000000001C000000-memory.dmp

    Filesize

    128KB

    Download

  • memory/2364-5-0x00007FF810D30000-0x00007FF8116D1000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/2364-1-0x00007FF810D30000-0x00007FF8116D1000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/2364-36-0x00007FF810D30000-0x00007FF8116D1000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/4728-37-0x00007FF810D30000-0x00007FF8116D1000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/4728-38-0x00007FF810D30000-0x00007FF8116D1000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/4728-48-0x000000001C860000-0x000000001C8FC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4728-49-0x00000000012B0000-0x00000000012B8000-memory.dmp

    Filesize

    32KB

    Download

  • memory/4728-50-0x00007FF810D30000-0x00007FF8116D1000-memory.dmp

    Filesize

    9.6MB

    Download