General

  • Target

    setup.exe

  • Size

    785.0MB

  • Sample

    240615-thwysswfmb

  • MD5

    640e910d06ebab4b066a696ba0e78b55

  • SHA1

    534e97d66e68eab6fa916fabe05beaef822b56e8

  • SHA256

    9b5e9a1b37be8612f14d52bd6a1bfbb850a05164d677738bcf6ea41c1a1c97a6

  • SHA512

    9dd5f8b06e675912e53833e4cc7a77ab06a3e25d7e23c907f351e715011c1096baaed0e8a1dd5ec56d69124988fb1bce082ee3cda3b5b70ee301fedb56b01177

  • SSDEEP

    98304:rO0hNxrp27xGHwGZpRiE5ygmAfrjQxuN7:rOUnQAHwipRtw1ol

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Extracted

Family

redline

Botnet

LogsDiller Cloud (TG: @logsdillabot)

C2

5.42.65.63:14707

Extracted

Family

risepro

C2

147.45.47.126:58709

Targets

    • Target

      setup.exe

    • Size

      785.0MB

    • MD5

      640e910d06ebab4b066a696ba0e78b55

    • SHA1

      534e97d66e68eab6fa916fabe05beaef822b56e8

    • SHA256

      9b5e9a1b37be8612f14d52bd6a1bfbb850a05164d677738bcf6ea41c1a1c97a6

    • SHA512

      9dd5f8b06e675912e53833e4cc7a77ab06a3e25d7e23c907f351e715011c1096baaed0e8a1dd5ec56d69124988fb1bce082ee3cda3b5b70ee301fedb56b01177

    • SSDEEP

      98304:rO0hNxrp27xGHwGZpRiE5ygmAfrjQxuN7:rOUnQAHwipRtw1ol

    • Detect Vidar Stealer

    • Modifies firewall policy service

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • RedLine

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

    • RedLine payload

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • Stealc

      Stealc is an infostealer written in C++.

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Sets file execution options in registry

    • Sets service image path in registry

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks