Overview

overview

10

Static

static

3

3b98425cc4...7N.exe

windows7-x64

10

3b98425cc4...7N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    3b98425cc4732681763f213523a28baa42b54f13782854b735ba086f8d5ce2d7N.exe

  • Size

    5.5MB

  • Sample

    241123-ccyrrsvncy

  • MD5

    4c16ef1a96257c888809c9f74a3264a0

  • SHA1

    1fc4cdca23fd7b5af6ed3e8eac1c4a58ac08d943

  • SHA256

    3b98425cc4732681763f213523a28baa42b54f13782854b735ba086f8d5ce2d7

  • SHA512

    52a4f3d7041bc8344189ae9eada45dfcc4c1eb05b07fe37b119e723c769c5fc0cc367e876296f10eef1f21c3f060f7da8df4e254e0e7abacea52bf764e18b0cd

  • SSDEEP

    98304:T3h6d68gwIteZNiiPwVpt/fh6ImzzJoDfuBcMv+A73XA:TR668aaELhHh6ImzD+F

Score
10/10
remcosxredabillion+nairabackdoordiscoveryexecutionpersistencerat

Malware Config

Extracted

Family

xred

C2

xred.mooo.com

Attributes
  • email

    [email protected]

  • payload_url

    http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978

    https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download

    https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1

    http://xred.site50.net/syn/SUpdate.ini

    https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download

    https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1

    http://xred.site50.net/syn/Synaptics.rar

    https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download

    https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1

    http://xred.site50.net/syn/SSLLibrary.dll

Extracted

Family

remcos

Botnet

ABILLION+NAIRA

C2

nzobaku.ddns.net:8081

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-S0L1LJ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      3b98425cc4732681763f213523a28baa42b54f13782854b735ba086f8d5ce2d7N.exe

    • Size

      5.5MB

    • MD5

      4c16ef1a96257c888809c9f74a3264a0

    • SHA1

      1fc4cdca23fd7b5af6ed3e8eac1c4a58ac08d943

    • SHA256

      3b98425cc4732681763f213523a28baa42b54f13782854b735ba086f8d5ce2d7

    • SHA512

      52a4f3d7041bc8344189ae9eada45dfcc4c1eb05b07fe37b119e723c769c5fc0cc367e876296f10eef1f21c3f060f7da8df4e254e0e7abacea52bf764e18b0cd

    • SSDEEP

      98304:T3h6d68gwIteZNiiPwVpt/fh6ImzzJoDfuBcMv+A73XA:TR668aaELhHh6ImzD+F

    Score
    10/10
    remcosxredabillion+nairabackdoordiscoveryexecutionpersistencerat

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Remcos family

      remcos

    • Xred

      Xred is backdoor written in Delphi.

      backdoorxred

    • Xred family

      xred

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks