Overview

overview

10

Static

static

51d087facc...68.exe

windows7_x64

10

51d087facc...68.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4294119s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    24/03/2022, 21:30

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    51d087facc08f92ec7a09be8eb0f1c68.exe
  • Size 605KB
  • Sample220324-1chmjsbdan
  • SHA256 abaa9d3b449c635f19900f3592ac80e73451590cf9ff48cb0df5b79e06c19b02
  • MD5 SHA1 SHA512
Score
10/10
vidar1164discoveryspywarestealersuricata

Malware Config

Extracted

Family

  • vidar

Version

  • 51

Botnet

  • 1164

C2

  • https://stereodon.social/@samssal

  • https://climatejustice.social/@s4m7al

Attributes
  • profile_id

    1164

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    suricata
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2

    suricata
  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (passwords.txt) M2

    suricata
  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    suricata
  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

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

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

    suricata
  • Vidar Stealer 2 IoCs
    stealer
  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • 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.

    spywarestealer
  • Accesses 2FA software files, possible credential harvesting 2 TTPs
    spywarestealer
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
    spyware
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • 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 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\51d087facc08f92ec7a09be8eb0f1c68.exe
    "C:\Users\Admin\AppData\Local\Temp\51d087facc08f92ec7a09be8eb0f1c68.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 51d087facc08f92ec7a09be8eb0f1c68.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\51d087facc08f92ec7a09be8eb0f1c68.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1156
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 51d087facc08f92ec7a09be8eb0f1c68.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1672
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:1844

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1212-58-0x0000000000400000-0x00000000004DA000-memory.dmp
        Download

        memory/1212-54-0x000000000066E000-0x00000000006D9000-memory.dmp
        Download

        memory/1212-57-0x0000000000270000-0x000000000031C000-memory.dmp
        Download

        memory/1212-56-0x000000000066E000-0x00000000006D9000-memory.dmp
        Download

        memory/1212-55-0x0000000075BB1000-0x0000000075BB3000-memory.dmp
        Download