Resubmissions

03-04-2024 19:54

240403-ymwwtabd88 10

29-03-2024 17:27

240329-v1sjrsde91 10

General

  • Target

    Inchr_StExta_Itst_v.3.1.rar

  • Size

    102.1MB

  • Sample

    240403-ymwwtabd88

  • MD5

    b35a8f49f22ba7206fad6526ac34f676

  • SHA1

    6a891561a94655ae415b588104e62e5b0bb4d56f

  • SHA256

    a4b05d52ea75d56b2e6ba0a153eb638290b546a86e5702b6ab1a15243a1e25a7

  • SHA512

    e9713bd82429611fd5799470a5e19defa09d960d336245733f38f08b4dbbbc67b6b7fa4a6a09a8885c0ac3f6605e82675ca8deee2103f85ee0782c44c6daaf0e

  • SSDEEP

    3145728:okTYasCFkAhweVB8SWh/s1ncJVn+t6Y7MREum8ySR1F:zkAhwjSWRCc/+t6EMRMBSR1F

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

    • MD5

      31fee2c73b8d2a8ec979775cd5f5ced7

    • SHA1

      39182a68bc0c1c07d3ddc47cd69fe3692dbac834

    • SHA256

      d26a7f2d4f3521827201e6cdcd296f132c7d18c3a1ce70c24b423300cff326fe

    • SHA512

      db51b602a8675641bc3a0a980a197243787ed12f5e0619cb1d390c91193d7e3447e3e86e2321c3ea273c6732b356003a249241d7d8a5699931810e5a35d5c650

    • SSDEEP

      24576:kL/7n6lbcC8oblv1zj1SqdAGFQZIxvC45UJoe1Z:E6+C8o5tzjYq+ZIxL5UJoeL

    • 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

    • MD5

      f975a2d83d63a473fa2fc5206b66bb79

    • SHA1

      e49d21f112ab27ae0953aff30ae122440cf164b9

    • SHA256

      6a2d3876003f6c68f824df4f0033564d8c230716908ba2e6c06ea1dd6d5f98e8

    • SHA512

      4af4ce56bf131432d488ed112f8858c1e1392d013c6ac0603f2fd70ed513091e35854c0f678efeab7fa9a551517c6b9698f40a92729112de4b852fa3c0c69d64

    • SSDEEP

      12288:IbCylcTVPbi7vT1K7n6HpVkg8KHIo5u0K1VmMxEnbuvuY2jTU+LHMA+nk2oG1ts:4lcTVPbikTMkg8KH/mmMxnvfphx8

    • Detect Vidar Stealer

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks