Analysis

  • max time kernel
    158s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/10/2023, 07:54

General

  • Target

    2353ef140fcfb38add13c74b388b710d.exe

  • Size

    290KB

  • MD5

    2353ef140fcfb38add13c74b388b710d

  • SHA1

    4c7f18fc0fc379e232df0303dd80654d693e45b5

  • SHA256

    17fda4fb35aa42510fe2ae20d26a6d74ee65075ce95a084c32ca9548a58838a0

  • SHA512

    d0f18c59678592ac7c123bafdf963a4d5ae36adbecc37fd4e4fd4f786033ad01b366cbb174498f0709bb2006a865463f01c20522ddefda2b3e196a56b0a58c5c

  • SSDEEP

    6144:w1S2o9ph6wYDkInQFXYFed9jjzehAMwr71V82IXRn:ws20ZUZFijzehAMz2S

Malware Config

Extracted

Family

vidar

Version

5.9

Botnet

e22d2e68f8601f5538d68ac735f8c50d

C2

https://steamcommunity.com/profiles/76561199557479327

https://t.me/grizmons

Attributes
  • profile_id_v2

    e22d2e68f8601f5538d68ac735f8c50d

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36 OPR/104.0.0.0

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
  • 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).

  • 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 AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2353ef140fcfb38add13c74b388b710d.exe
    "C:\Users\Admin\AppData\Local\Temp\2353ef140fcfb38add13c74b388b710d.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\2353ef140fcfb38add13c74b388b710d.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4660
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:4760
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 1588
      2⤵
      • Program crash
      PID:3824
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1960 -ip 1960
    1⤵
      PID:3028
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
      1⤵
        PID:3908
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k UnistackSvcGroup
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1904

      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/1904-59-0x000001C582CA0000-0x000001C582CB0000-memory.dmp

        Filesize

        64KB

      • memory/1904-95-0x000001C58B250000-0x000001C58B251000-memory.dmp

        Filesize

        4KB

      • memory/1904-94-0x000001C58B140000-0x000001C58B141000-memory.dmp

        Filesize

        4KB

      • memory/1904-93-0x000001C58B140000-0x000001C58B141000-memory.dmp

        Filesize

        4KB

      • memory/1904-91-0x000001C58B110000-0x000001C58B111000-memory.dmp

        Filesize

        4KB

      • memory/1904-75-0x000001C582DA0000-0x000001C582DB0000-memory.dmp

        Filesize

        64KB

      • memory/1960-13-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/1960-58-0x0000000002350000-0x00000000023A1000-memory.dmp

        Filesize

        324KB

      • memory/1960-56-0x0000000000400000-0x00000000005C0000-memory.dmp

        Filesize

        1.8MB

      • memory/1960-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

        Filesize

        1024KB

      • memory/1960-3-0x0000000000400000-0x00000000005C0000-memory.dmp

        Filesize

        1.8MB

      • memory/1960-2-0x0000000002350000-0x00000000023A1000-memory.dmp

        Filesize

        324KB