Overview

overview

10

Static

static

10

be4e51ecca...98.exe

windows7_x64

10

be4e51ecca...98.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    154s
  • max time network
    190s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:07

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General

  • Target

    be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98.exe

  • Size

    31KB

  • MD5

    18fd235145f8ab58e1459ca717da16f8

  • SHA1

    feccaf6747cbcb7d4adcec37886f107ed4135597

  • SHA256

    be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98

  • SHA512

    0df79707f6d2b26d06c47827f8207b1c74322483676b7d7be72d28bb8bae6c54b2cef8c8ade5360fe87b6f21af0418b4bb87f0ee76ad42a2eb4e329dd3a44f45

Score
10/10
njratfaustevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Faust

C2

192.168.88.12:7777

Mutex

77beb3e67b10486d166a5b0f147439dc

Attributes
  • reg_key

    77beb3e67b10486d166a5b0f147439dc

  • splitter

    Y262SUCZ4UJJ

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 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98.exe
    "C:\Users\Admin\AppData\Local\Temp\be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Users\Admin\AppData\Local\Temp\AF.exe
      "C:\Users\Admin\AppData\Local\Temp\AF.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4188
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\AF.exe" "AF.exe" ENABLE
        3⤵
          PID:3156

    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\AF.exe
      Filesize

      31KB

      MD5

      18fd235145f8ab58e1459ca717da16f8

      SHA1

      feccaf6747cbcb7d4adcec37886f107ed4135597

      SHA256

      be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98

      SHA512

      0df79707f6d2b26d06c47827f8207b1c74322483676b7d7be72d28bb8bae6c54b2cef8c8ade5360fe87b6f21af0418b4bb87f0ee76ad42a2eb4e329dd3a44f45

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

      31KB

      MD5

      18fd235145f8ab58e1459ca717da16f8

      SHA1

      feccaf6747cbcb7d4adcec37886f107ed4135597

      SHA256

      be4e51ecca7a9cfb5ca39240ce27beea314be89af2bbf40dd4d5b2a8d3203c98

      SHA512

      0df79707f6d2b26d06c47827f8207b1c74322483676b7d7be72d28bb8bae6c54b2cef8c8ade5360fe87b6f21af0418b4bb87f0ee76ad42a2eb4e329dd3a44f45

      Download Submit
    • memory/2856-130-0x00000000745D0000-0x0000000074B81000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3156-135-0x0000000000000000-mapping.dmp
      Download
    • memory/4188-131-0x0000000000000000-mapping.dmp
      Download
    • memory/4188-134-0x00000000745D0000-0x0000000074B81000-memory.dmp
      Filesize

      5.7MB

      Download