Analysis

  • max time kernel
    143s
  • max time network
    192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-05-2023 22:09

General

  • Target

    5f48a3234ca717ba4aaaea477802147f5d1a5a3d423b1929af024ca7d30d234a.exe

  • Size

    472KB

  • MD5

    8f2c9f0afc36de964044399238b4855b

  • SHA1

    e9593d9a131ad8645fde1074160d648323c97223

  • SHA256

    5f48a3234ca717ba4aaaea477802147f5d1a5a3d423b1929af024ca7d30d234a

  • SHA512

    31e5ce5e73726eec6cdfe7604796f647f2e7ab3c210de15e6ac823b10ba9f6ef3fb634737225448334877e7d69de6902d6a5c7496ebe1431fbcff030a247d150

  • SSDEEP

    6144:jTYtlUIxup5oaxT+DWEWPuhC68et8lTGGZitd0EayvzAxGK9j:jTGlUIxI5TTRkhhtsA0Eayv8xp

Malware Config

Extracted

Family

vidar

Version

3.6

Botnet

78489afd9d9a4747beb445e5fb5b9c96

C2

https://steamcommunity.com/profiles/76561199499188534

https://t.me/nutalse

Attributes
  • profile_id_v2

    78489afd9d9a4747beb445e5fb5b9c96

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

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).

  • 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\5f48a3234ca717ba4aaaea477802147f5d1a5a3d423b1929af024ca7d30d234a.exe
    "C:\Users\Admin\AppData\Local\Temp\5f48a3234ca717ba4aaaea477802147f5d1a5a3d423b1929af024ca7d30d234a.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:564
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\5f48a3234ca717ba4aaaea477802147f5d1a5a3d423b1929af024ca7d30d234a.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2156
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:1760
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 564 -s 2120
      2⤵
      • Program crash
      PID:680
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 564 -ip 564
    1⤵
      PID:5048

    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/564-134-0x0000000002560000-0x00000000025BD000-memory.dmp

      Filesize

      372KB

    • memory/564-135-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB

    • memory/564-136-0x0000000002560000-0x00000000025BD000-memory.dmp

      Filesize

      372KB

    • memory/564-137-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB

    • memory/564-139-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB

    • memory/564-156-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB

    • memory/564-157-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/564-181-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB

    • memory/564-229-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB

    • memory/564-230-0x0000000000400000-0x000000000081B000-memory.dmp

      Filesize

      4.1MB