Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    24/07/2020, 10:40

General

  • Target
    b31928e3f286c72aa7b474b4c2340b16.exe
  • Size 627KB
  • Sample200724-733yj9nlcs
  • SHA256 eaf272ccebdce006c18793bdbcd0b4729d6ac2eefa2ef900cee811d74d953825
  • MD5 SHA1 SHA512
Score
8/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
  • Modifies system certificate store 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Loads dropped DLL 7 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • JavaScript code in executable 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Kills process with taskkill 1 IoCs
  • Checks whether UAC is enabled 2 IoCs
  • Modifies data under HKEY_USERS 17 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Reads user/profile data of local email clients 2 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\b31928e3f286c72aa7b474b4c2340b16.exe
    "C:\Users\Admin\AppData\Local\Temp\b31928e3f286c72aa7b474b4c2340b16.exe"
    1⤵
    • Drops file in Windows directory
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    • Drops file in Program Files directory
    PID:1000
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" https://iplogger.org/1vncg7.html
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of FindShellTrayWindow
      • Checks whether UAC is enabled
      • Suspicious use of WriteProcessMemory
      PID:324
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:324 CREDAT:275457 /prefetch:2
        3⤵
        • Modifies Internet Explorer settings
        • Modifies system certificate store
        • Suspicious use of SetWindowsHookEx
        • Checks whether UAC is enabled
        PID:1324
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Checks processor information in registry
      PID:1020
      • 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:1440
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im wotsuper.exe /f
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1472
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper1.exe"
      2⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of WriteProcessMemory
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: EnumeratesProcesses
      PID:1616
      • 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:1792
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1
          4⤵
          • Runs ping.exe
          PID:1820
    • C:\Windows\SysWOW64\regedit.exe
      "C:\Windows\System32\regedit.exe" \s C:\Windows\wotsuper.reg
      2⤵
      • Runs .reg file with regedit
      PID:1044

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1616-11-0x00000000005B0000-0x00000000005CE000-memory.dmp

        memory/1616-9-0x0000000010000000-0x0000000010022000-memory.dmp