General

  • Target

    spoolsv.exe

  • Size

    125KB

  • Sample

    241208-rhy22s1jdl

  • MD5

    02201ab0ffca3905fbf110296fd58298

  • SHA1

    4068eb4c09f6e09637588ee3cf62bf7229a25faa

  • SHA256

    4d0f2f8fd89fec7e4f1348b5b6a0ea528d2b391f48e69df140b91845c0989abe

  • SHA512

    4f2d86d8dbdb6946bdd982b7c48aea803eccd99c51ddbd6edcb1f7301f9a8f255953210b5b47ecd6e6a8f1bf93269bb519b3a83548f7d3ea63ded3980bef3705

  • SSDEEP

    1536:Rn7TvjnE1RowM/gZbgjx1LAYivy6sDOsyrXdtyVt3A7HPd4n+lbeRZIbSQPYU:RHovoX/0bgAoORHyHQbPRyZ2pPYU

Malware Config

Extracted

Family

redline

Botnet

l3monlogs

C2

78.70.235.238:1912

Targets

    • Target

      spoolsv.exe

    • Size

      125KB

    • MD5

      02201ab0ffca3905fbf110296fd58298

    • SHA1

      4068eb4c09f6e09637588ee3cf62bf7229a25faa

    • SHA256

      4d0f2f8fd89fec7e4f1348b5b6a0ea528d2b391f48e69df140b91845c0989abe

    • SHA512

      4f2d86d8dbdb6946bdd982b7c48aea803eccd99c51ddbd6edcb1f7301f9a8f255953210b5b47ecd6e6a8f1bf93269bb519b3a83548f7d3ea63ded3980bef3705

    • SSDEEP

      1536:Rn7TvjnE1RowM/gZbgjx1LAYivy6sDOsyrXdtyVt3A7HPd4n+lbeRZIbSQPYU:RHovoX/0bgAoORHyHQbPRyZ2pPYU

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • Redline family

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks