Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-09-2023 15:05

General

  • Target

    990824b28b1db8f0e38bec6aebeaf1b2.exe

  • Size

    5.3MB

  • MD5

    990824b28b1db8f0e38bec6aebeaf1b2

  • SHA1

    75b2904f3481e5468e3076b842ff529b23e2d20b

  • SHA256

    f45a8e04076925bd0d3990adaa82182945dad0c72d35873a108eb2cdefe29063

  • SHA512

    8a8637b4c50c9f92d42a4bae02dbe8e19d7867d91a542b95916d8de88eaf1dba5e7ede0b82934d6015e90d6b355a0193bfe6a941ffbb72ba97f9ee7e59c172f8

  • SSDEEP

    98304:bz+UuR7m7n5+OPAZU+leHfQkjA1JAE5lPKn4m/V38fque1VIL:h8yn5+vZ6ALKnjyfRUI

Malware Config

Extracted

Family

vidar

Version

5.7

Botnet

348bd4740381edfdd4d5e8143ef4a08e

C2

https://steamcommunity.com/profiles/76561199553369541

https://t.me/dastanatg

Attributes
  • profile_id_v2

    348bd4740381edfdd4d5e8143ef4a08e

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_8) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Safari/605.1.75

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 11 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\990824b28b1db8f0e38bec6aebeaf1b2.exe
    "C:\Users\Admin\AppData\Local\Temp\990824b28b1db8f0e38bec6aebeaf1b2.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3424
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3424 -s 1864
      2⤵
      • Program crash
      PID:4576
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3424 -ip 3424
    1⤵
      PID:3568

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll

      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll

      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • memory/3424-10-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-7-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-8-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-9-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-0-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-11-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-12-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-13-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-14-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-24-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/3424-6-0x0000000077284000-0x0000000077286000-memory.dmp

      Filesize

      8KB

    • memory/3424-1-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB

    • memory/3424-68-0x0000000000AE0000-0x00000000014ED000-memory.dmp

      Filesize

      10.1MB