Overview

overview

10

Static

static

190620b39c...c6.exe

windows7_x64

10

190620b39c...c6.exe

windows10_x64

10

Analysis

  • max time kernel
    76s
  • max time network
    126s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    01/09/2020, 15:57

Sharing

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General

  • Target
    190620b39cd2b8a6ba7f7de87069fec6.exe
  • Size 503KB
  • Sample200901-mp88sfc3n6
  • SHA256 f8d6f282de8b50d4d9e6fc17f53b0b33cecb4f4fb01f956cca3ba622b4b452aa
  • MD5 SHA1 SHA512
Score
10/10
stealervidarspywarediscovery

Malware Config

Signatures

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

    stealervidar
  • 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 local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spyware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • 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
  • JavaScript code in executable 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Program crash 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 3 IoCs
  • Checks processor information in registry 2 TTPs 5 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Kills process with taskkill 1 IoCs
    evasion
  • Modifies Control Panel 1 IoCs
    evasion
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 5 IoCs
  • Modifies registry class 113 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\190620b39cd2b8a6ba7f7de87069fec6.exe
    "C:\Users\Admin\AppData\Local\Temp\190620b39cd2b8a6ba7f7de87069fec6.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:344
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im wotsuper1.exe /f & erase C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4188
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im wotsuper1.exe /f
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4232
    • C:\Windows\SysWOW64\regedit.exe
      "C:\Windows\System32\regedit.exe" \s C:\Windows\wotsuper.reg
      2⤵
      • Runs .reg file with regedit
      PID:1156
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious use of AdjustPrivilegeToken
    PID:668
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Drops file in Windows directory
    • Modifies Control Panel
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1840
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1840 -s 3492
      2⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Program crash
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:884
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:2060

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        memory/884-237-0x0000028EDB790000-0x0000028EDB791000-memory.dmp
        Download

        memory/884-193-0x0000028EDB6A0000-0x0000028EDB6A1000-memory.dmp
        Download

        memory/884-182-0x0000028EDA830000-0x0000028EDA831000-memory.dmp
        Download

        memory/884-180-0x0000028EDA830000-0x0000028EDA831000-memory.dmp
        Download

        memory/884-325-0x0000028ED8E70000-0x0000028ED8E71000-memory.dmp
        Download