Analysis

  • max time kernel
    59s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-06-2023 17:38

General

  • Target

    fd93fdc5ff4abb5a8479a36316875ddc5e77f45e4d86b7437888e5740bf266ac.exe

  • Size

    374KB

  • MD5

    7499c20554084c32e5881c30ac3031d0

  • SHA1

    61e7c42a4a20fa8f12f44b7c771ebedc4be5fb17

  • SHA256

    fd93fdc5ff4abb5a8479a36316875ddc5e77f45e4d86b7437888e5740bf266ac

  • SHA512

    d91ecf20a60f124b862fdcbc7de142f4a6309fcf5959ada864c865c5ff9e53388cd12b0a9e1ea53ab333be39d39fc59c7c7b684a83a205d2a706b9d087fd4322

  • SSDEEP

    6144:NY6Y/7plOmn9yd/s9h01JbPU5Kxx7tVZohR/HBZomU0fJMk:2X7pYHd/s9ujwKbRythZomU

Malware Config

Extracted

Family

vidar

Version

4.1

Botnet

a247b760bbf343752090be1436805458

C2

https://t.me/task4manager

http://23.88.46.113:80

https://steamcommunity.com/profiles/76561199510444991

Attributes
  • profile_id_v2

    a247b760bbf343752090be1436805458

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • 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.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Accesses cryptocurrency files/wallets, 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd93fdc5ff4abb5a8479a36316875ddc5e77f45e4d86b7437888e5740bf266ac.exe
    "C:\Users\Admin\AppData\Local\Temp\fd93fdc5ff4abb5a8479a36316875ddc5e77f45e4d86b7437888e5740bf266ac.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    PID:4932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 2012
      2⤵
      • Program crash
      PID:2328
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4932 -ip 4932
    1⤵
      PID:3148

    Network

    MITRE ATT&CK Enterprise v6

    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/4932-134-0x0000000004A50000-0x0000000004AA6000-memory.dmp

      Filesize

      344KB

    • memory/4932-135-0x0000000000400000-0x0000000002D05000-memory.dmp

      Filesize

      41.0MB

    • memory/4932-137-0x0000000000400000-0x0000000002D05000-memory.dmp

      Filesize

      41.0MB

    • memory/4932-147-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/4932-165-0x0000000000400000-0x0000000002D05000-memory.dmp

      Filesize

      41.0MB

    • memory/4932-205-0x0000000000400000-0x0000000002D05000-memory.dmp

      Filesize

      41.0MB