Resubmissions

03/04/2024, 19:54

240403-ymwwtabd8810

29/03/2024, 17:27

240329-v1sjrsde9110

General

  • Target
    Inchr_StExta_Itst_v.3.1.rar
  • Size 102.1MB
  • Sample240403-ymwwtabd88
  • SHA256 a4b05d52ea75d56b2e6ba0a153eb638290b546a86e5702b6ab1a15243a1e25a7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

Version
  • 8.6

Botnet
  • cd7c97cce7ba52cbbfd2d03e0a6f87c3

C2
  • https://steamcommunity.com/profiles/76561199658817715

  • https://t.me/sa9ok

Attributes
  • profile_id_v2

    cd7c97cce7ba52cbbfd2d03e0a6f87c3

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Targets

    • Target
      Inchr_StExta_Itst_v.3.1/Mono/360TS_Setup_Mini.exe
    • Size 1.4MB
    • SHA256 d26a7f2d4f3521827201e6cdcd296f132c7d18c3a1ce70c24b423300cff326fe
    • MD5 SHA1 SHA512 SSDEEP
    • Modifies boot configuration data using bcdedit

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

    • Sets service image path in registry

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • 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.

    • 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.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Maps connected drives based on registry

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

    • 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

    • Target
      Inchr_StExta_Itst_v.3.1/Set-up.exe
    • Size 1.1MB
    • SHA256 6a2d3876003f6c68f824df4f0033564d8c230716908ba2e6c06ea1dd6d5f98e8
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Vidar Stealer

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks