Analysis

  • max time kernel
    113s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    02/08/2020, 10:55

General

  • Target
    8054fb018918f753e9a6b64f3da5b5c9.exe
  • Size 713KB
  • Sample200802-bpx9qdabla
  • SHA256 620d15d15c20dcc0a6d2d79317160180cd92fc005fc7bbd864a8ba3be34f3635
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 11 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.

  • 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.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
  • Modifies data under HKEY_USERS 17 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8054fb018918f753e9a6b64f3da5b5c9.exe
    "C:\Users\Admin\AppData\Local\Temp\8054fb018918f753e9a6b64f3da5b5c9.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:1164
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" https://iplogger.org/14jK87.html
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1288
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1288 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1384
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im wotsuper.exe /f & erase C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1564
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im wotsuper.exe /f
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1328
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:284
      • C:\Users\Admin\AppData\Local\Temp\fdf0a483..exe
        "C:\Users\Admin\AppData\Local\Temp\fdf0a483..exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:524
        • C:\Users\Admin\AppData\Local\Temp\fdf0a483..exe
          "C:\Users\Admin\AppData\Local\Temp\fdf0a483..exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:768
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 && del "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1388
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:1296
    • C:\Windows\SysWOW64\regedit.exe
      "C:\Windows\System32\regedit.exe" \s C:\Windows\wotsuper.reg
      2⤵
      • Runs .reg file with regedit
      PID:660

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/284-9-0x0000000010000000-0x0000000010017000-memory.dmp

        memory/284-12-0x00000000020D0000-0x00000000020EE000-memory.dmp

        memory/524-29-0x00000000025B0000-0x00000000025C1000-memory.dmp

        memory/524-28-0x0000000000AA6000-0x0000000000AA7000-memory.dmp

        memory/524-32-0x00000000025B0000-0x00000000025C1000-memory.dmp

        memory/768-33-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/1428-13-0x0000000000B86000-0x0000000000B87000-memory.dmp

        memory/1428-14-0x0000000002380000-0x0000000002391000-memory.dmp