Overview

overview

10

Static

static

10

431cba1cfb...4d.exe

windows7_x64

10

431cba1cfb...4d.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    154s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    24-05-2022 18:25

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General

  • Target

    431cba1cfb123d9f7cd3d1bbf91a66ea1cc1f4d8a30f86d794ed75d1b521664d.exe

  • Size

    23KB

  • MD5

    4ea1665eb888da8c049a453acc38b547

  • SHA1

    211a4143dc0b7daa35c325b8c7d75a4bb21eca58

  • SHA256

    431cba1cfb123d9f7cd3d1bbf91a66ea1cc1f4d8a30f86d794ed75d1b521664d

  • SHA512

    59a137aaecc7cb74a1dec3969670c68bfde376c319b0df735eb13a8dca4b3999bbada2b9c867483ead4c3cb4f180f812b31b8053808b5ba829b1fc001d0ae9dc

Score
10/10
njratyoutubeevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

YOUTUBE

C2

fnhost1.ddns.net:1177

Mutex

1bd172ac77b29bf1fd15d0de8a995ae1

Attributes
  • reg_key

    1bd172ac77b29bf1fd15d0de8a995ae1

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

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

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 27 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\431cba1cfb123d9f7cd3d1bbf91a66ea1cc1f4d8a30f86d794ed75d1b521664d.exe
    "C:\Users\Admin\AppData\Local\Temp\431cba1cfb123d9f7cd3d1bbf91a66ea1cc1f4d8a30f86d794ed75d1b521664d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Users\Admin\AppData\Local\Temp\chrome.exe
      "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1844
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome.exe" "chrome.exe" ENABLE
        3⤵
          PID:3284

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

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

      23KB

      MD5

      4ea1665eb888da8c049a453acc38b547

      SHA1

      211a4143dc0b7daa35c325b8c7d75a4bb21eca58

      SHA256

      431cba1cfb123d9f7cd3d1bbf91a66ea1cc1f4d8a30f86d794ed75d1b521664d

      SHA512

      59a137aaecc7cb74a1dec3969670c68bfde376c319b0df735eb13a8dca4b3999bbada2b9c867483ead4c3cb4f180f812b31b8053808b5ba829b1fc001d0ae9dc

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\chrome.exe
      Filesize

      23KB

      MD5

      4ea1665eb888da8c049a453acc38b547

      SHA1

      211a4143dc0b7daa35c325b8c7d75a4bb21eca58

      SHA256

      431cba1cfb123d9f7cd3d1bbf91a66ea1cc1f4d8a30f86d794ed75d1b521664d

      SHA512

      59a137aaecc7cb74a1dec3969670c68bfde376c319b0df735eb13a8dca4b3999bbada2b9c867483ead4c3cb4f180f812b31b8053808b5ba829b1fc001d0ae9dc

      Download Submit
    • memory/1844-131-0x0000000000000000-mapping.dmp
      Download
    • memory/1844-134-0x00000000753F0000-0x00000000759A1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3284-135-0x0000000000000000-mapping.dmp
      Download
    • memory/3728-130-0x00000000753F0000-0x00000000759A1000-memory.dmp
      Filesize

      5.7MB

      Download