Resubmissions

22-01-2023 15:20

230122-sq122sgd59 10

18-01-2022 00:18

220118-alwyesegdk 10

Analysis

  • max time kernel
    4264966s
  • max time network
    70s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    18-01-2022 00:18

General

  • Target

    532bc078a68683ce70cb765191a128fadee2a23180b1a8e8a16b72f1a8ee291a.exe

  • Size

    858KB

  • MD5

    d305c0176dc9a1f3daf516e6034f2b57

  • SHA1

    87faa41997ee2187247d117081d46284193fabda

  • SHA256

    532bc078a68683ce70cb765191a128fadee2a23180b1a8e8a16b72f1a8ee291a

  • SHA512

    8f7ca5e48f4f21d8429d0719caa6dd705d74c466392c1e91d372915aa8e4855789cd288d94567a59d301cc7335e55c8e0836b3280199ee9001149ab6b36a0a8e

Malware Config

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

    suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

  • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • 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.

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • NTFS ADS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\532bc078a68683ce70cb765191a128fadee2a23180b1a8e8a16b72f1a8ee291a.exe
    "C:\Users\Admin\AppData\Local\Temp\532bc078a68683ce70cb765191a128fadee2a23180b1a8e8a16b72f1a8ee291a.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\ProgramData\0HO018CL5PMY1CLE.exe
      "C:\ProgramData\0HO018CL5PMY1CLE.exe"
      2⤵
      • Executes dropped EXE
      PID:32
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 532bc078a68683ce70cb765191a128fadee2a23180b1a8e8a16b72f1a8ee291a.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\532bc078a68683ce70cb765191a128fadee2a23180b1a8e8a16b72f1a8ee291a.exe" & del C:\ProgramData\*.dll & exit
      2⤵
        PID:3008
    • C:\Windows\system32\MusNotification.exe
      C:\Windows\system32\MusNotification.exe
      1⤵
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2512

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads