Analysis

  • max time kernel
    71s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-01-2023 18:57

General

  • Target

    b9246a7cb0efe77225d19ff1dc0c982a6649c9b96ab63446c80542f146929a1b.exe

  • Size

    358KB

  • MD5

    8abfaae409bf39fee50815623157e2d1

  • SHA1

    6e1f85d46a5141ad0eddc0894b4a01b65f38ce32

  • SHA256

    b9246a7cb0efe77225d19ff1dc0c982a6649c9b96ab63446c80542f146929a1b

  • SHA512

    7d0a331fa535dbb8df88b70e10a05b12dc7df40b20e78b3eae15d94557c95b64869f732e66d7d81cfb5e154755178dfbc652deacfc765b0eebbe9a83f2994f2c

  • SSDEEP

    6144:bLsrk7LanzMJedKeChRFbjhHAFyuSwaMW3VG1Ei0w0ztkYr8qMrc:bLsrk7Gn4JtZjq8uWMWFF9z6o8n

Malware Config

Extracted

Family

vidar

Version

1.5

Botnet

14

C2

https://t.me/dahuasecurit

https://steamcommunity.com/profiles/76561199441999914

Attributes
  • profile_id

    14

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b9246a7cb0efe77225d19ff1dc0c982a6649c9b96ab63446c80542f146929a1b.exe
    "C:\Users\Admin\AppData\Local\Temp\b9246a7cb0efe77225d19ff1dc0c982a6649c9b96ab63446c80542f146929a1b.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2564
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\b9246a7cb0efe77225d19ff1dc0c982a6649c9b96ab63446c80542f146929a1b.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1780
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:1812
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2564 -s 1808
      2⤵
      • Program crash
      PID:3732
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2564 -ip 2564
    1⤵
      PID:3324

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\mozglue.dll
      Filesize

      133KB

      MD5

      8f73c08a9660691143661bf7332c3c27

      SHA1

      37fa65dd737c50fda710fdbde89e51374d0c204a

      SHA256

      3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

      SHA512

      0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

    • C:\ProgramData\nss3.dll
      Filesize

      1.2MB

      MD5

      bfac4e3c5908856ba17d41edcd455a51

      SHA1

      8eec7e888767aa9e4cca8ff246eb2aacb9170428

      SHA256

      e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

      SHA512

      2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

    • memory/1780-158-0x0000000000000000-mapping.dmp
    • memory/1812-159-0x0000000000000000-mapping.dmp
    • memory/2564-132-0x0000000000672000-0x00000000006A3000-memory.dmp
      Filesize

      196KB

    • memory/2564-133-0x00000000005F0000-0x0000000000647000-memory.dmp
      Filesize

      348KB

    • memory/2564-134-0x0000000000400000-0x0000000000476000-memory.dmp
      Filesize

      472KB

    • memory/2564-135-0x0000000000672000-0x00000000006A3000-memory.dmp
      Filesize

      196KB

    • memory/2564-136-0x0000000000400000-0x0000000000476000-memory.dmp
      Filesize

      472KB

    • memory/2564-137-0x0000000060900000-0x0000000060992000-memory.dmp
      Filesize

      584KB

    • memory/2564-160-0x0000000000672000-0x00000000006A3000-memory.dmp
      Filesize

      196KB

    • memory/2564-161-0x0000000000400000-0x0000000000476000-memory.dmp
      Filesize

      472KB