Overview

overview

10

Static

static

3

871287a31e...51.exe

windows7-x64

10

871287a31e...51.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    871287a31efe88db587b63f1b4fa92fae14cc63c8146c48e0492e46530e00951

  • Size

    1.6MB

  • Sample

    250221-d2dzbstnx6

  • MD5

    46618abdf3e14531ffe56017b196da7a

  • SHA1

    646e24a7d2745ecb8e9ec8d8a945e6c671ba397c

  • SHA256

    871287a31efe88db587b63f1b4fa92fae14cc63c8146c48e0492e46530e00951

  • SHA512

    fd8fda64bb062d16b360216dc8422a228c87621ab8e7c71fe23dcd140de4b72341db6989d1b435697c01ac8206bbfc428d5dbe2b536b19f5c3a6dc6df6cf9a01

  • SSDEEP

    49152:cdPQwh6G//OyxCjRW/iHIteZMqbRDENiPw3FTFk:U3h6d68gwIteZNiiPwVpk

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

      871287a31efe88db587b63f1b4fa92fae14cc63c8146c48e0492e46530e00951

    • Size

      1.6MB

    • MD5

      46618abdf3e14531ffe56017b196da7a

    • SHA1

      646e24a7d2745ecb8e9ec8d8a945e6c671ba397c

    • SHA256

      871287a31efe88db587b63f1b4fa92fae14cc63c8146c48e0492e46530e00951

    • SHA512

      fd8fda64bb062d16b360216dc8422a228c87621ab8e7c71fe23dcd140de4b72341db6989d1b435697c01ac8206bbfc428d5dbe2b536b19f5c3a6dc6df6cf9a01

    • SSDEEP

      49152:cdPQwh6G//OyxCjRW/iHIteZMqbRDENiPw3FTFk:U3h6d68gwIteZNiiPwVpk

    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