Overview

overview

10

Static

static

jYkChFzZ.exe

windows7_x64

10

jYkChFzZ.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    02-12-2020 22:18

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General

  • Target

    jYkChFzZ.exe

  • Size

    31KB

  • MD5

    d7e959acd7da6149aff2e71a7ab0713b

  • SHA1

    578defaa4988bfc938688c6dea302c47c8d86ba0

  • SHA256

    88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2

  • SHA512

    39eee83283f5891be68b70b6a9af6ac021c71d6492f9f035302138e43716ab647e237f32ba199532d9e2df0be12a46289fe2fea5ddd4443d23858e08657bc1bf

Score
10/10
njratmybotevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

MyBot

C2

striker223.ddns.net:1604

Mutex

17cdd78b405de2165b1a9f366dd395d1

Attributes
  • reg_key

    17cdd78b405de2165b1a9f366dd395d1

  • splitter

    Y262SUCZ4UJJ

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • 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 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jYkChFzZ.exe
    "C:\Users\Admin\AppData\Local\Temp\jYkChFzZ.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\Javaw.exe
      "C:\Users\Admin\AppData\Local\Temp\Javaw.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3200
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Javaw.exe" "Javaw.exe" ENABLE
        3⤵
          PID:848

    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

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Javaw.exe
      MD5

      d7e959acd7da6149aff2e71a7ab0713b

      SHA1

      578defaa4988bfc938688c6dea302c47c8d86ba0

      SHA256

      88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2

      SHA512

      39eee83283f5891be68b70b6a9af6ac021c71d6492f9f035302138e43716ab647e237f32ba199532d9e2df0be12a46289fe2fea5ddd4443d23858e08657bc1bf

      Download Submit
    • C:\Users\Admin\AppData\Local\Temp\Javaw.exe
      MD5

      d7e959acd7da6149aff2e71a7ab0713b

      SHA1

      578defaa4988bfc938688c6dea302c47c8d86ba0

      SHA256

      88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2

      SHA512

      39eee83283f5891be68b70b6a9af6ac021c71d6492f9f035302138e43716ab647e237f32ba199532d9e2df0be12a46289fe2fea5ddd4443d23858e08657bc1bf

      Download Submit
    • memory/848-5-0x0000000000000000-mapping.dmp
      Download
    • memory/3200-2-0x0000000000000000-mapping.dmp
      Download