Overview

overview

10

Static

static

43ecb980e6...a6.exe

windows7_x64

10

43ecb980e6...a6.exe

windows10_x64

10

Analysis

  • max time kernel
    142s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    23/09/2021, 12:52

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General

  • Target
    43ecb980e6e1db8f394af5b6d065eba6.exe
  • Size 1.5MB
  • Sample210923-p34f6aeec7
  • SHA256 5b2fce91cda0fa71818a683c57c88eb1533b70bcfb5e82b312757b3015d69801
  • MD5 SHA1 SHA512
Score
10/10
vidardiscoveryspywarestealer

Malware Config

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • Vidar Stealer 2 IoCs
    stealer
  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Loads dropped DLL 4 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\43ecb980e6e1db8f394af5b6d065eba6.exe
    "C:\Users\Admin\AppData\Local\Temp\43ecb980e6e1db8f394af5b6d065eba6.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im 43ecb980e6e1db8f394af5b6d065eba6.exe /f & timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\Temp\43ecb980e6e1db8f394af5b6d065eba6.exe" & del C:\ProgramData\*.dll & exit
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:908
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im 43ecb980e6e1db8f394af5b6d065eba6.exe /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1204
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 6
        3⤵
        • Delays execution with timeout.exe
        PID:1060

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        memory/1128-53-0x0000000074B41000-0x0000000074B43000-memory.dmp
        Download

        memory/1128-56-0x0000000000400000-0x000000000057E000-memory.dmp
        Download

        memory/1128-55-0x0000000002D70000-0x0000000002E8B000-memory.dmp
        Download

        memory/1128-54-0x00000000003E0000-0x00000000003E1000-memory.dmp
        Download