Analysis

  • max time kernel
    141s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 16:16

General

  • Target

    3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe

  • Size

    776KB

  • MD5

    f6669c4e5245e525a0a1428001c5e590

  • SHA1

    f437c521654e51b7fa2ca4498651e5fe8d1568a0

  • SHA256

    3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64

  • SHA512

    e1c62d067b943dd0236cf40b3952920501ab370ef9339ff51d018597a467c71ab48c7b696e724be82a1790830ea8c77a9560a29419a5ff224072e89ab4904da9

  • SSDEEP

    12288:Lqu1rgUUoiTuqw7jYpTMyJuy7HMIO85LJi1Pg2ddP/59r3DzKjGuME+ctfDgKirn:L91rg8LqCjcS0S1dP/59rzaV/irGw/v

Malware Config

Signatures

  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • Nirsoft 9 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 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.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe
    "C:\Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GoogleUpdate" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe.lnk"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1588
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GoogleUpdate" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe.lnk"
        3⤵
        • Adds Run key to start application
        PID:1576
    • C:\Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe
      "C:\Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1880
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c copy /z "C:\Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe"
        3⤵
          PID:1164
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\logff.txt
          3⤵
            PID:1800
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
            dw20.exe -x -s 1776
            3⤵
            • Loads dropped DLL
            PID:1832
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\logmail.txt
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:2008

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe

        Filesize

        776KB

        MD5

        f6669c4e5245e525a0a1428001c5e590

        SHA1

        f437c521654e51b7fa2ca4498651e5fe8d1568a0

        SHA256

        3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64

        SHA512

        e1c62d067b943dd0236cf40b3952920501ab370ef9339ff51d018597a467c71ab48c7b696e724be82a1790830ea8c77a9560a29419a5ff224072e89ab4904da9

      • C:\Users\Admin\AppData\Local\Temp\logff.txt

        Filesize

        2B

        MD5

        f3b25701fe362ec84616a93a45ce9998

        SHA1

        d62636d8caec13f04e28442a0a6fa1afeb024bbb

        SHA256

        b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

        SHA512

        98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

      • \Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe

        Filesize

        776KB

        MD5

        f6669c4e5245e525a0a1428001c5e590

        SHA1

        f437c521654e51b7fa2ca4498651e5fe8d1568a0

        SHA256

        3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64

        SHA512

        e1c62d067b943dd0236cf40b3952920501ab370ef9339ff51d018597a467c71ab48c7b696e724be82a1790830ea8c77a9560a29419a5ff224072e89ab4904da9

      • \Users\Admin\AppData\Local\Temp\3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64.exe

        Filesize

        776KB

        MD5

        f6669c4e5245e525a0a1428001c5e590

        SHA1

        f437c521654e51b7fa2ca4498651e5fe8d1568a0

        SHA256

        3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64

        SHA512

        e1c62d067b943dd0236cf40b3952920501ab370ef9339ff51d018597a467c71ab48c7b696e724be82a1790830ea8c77a9560a29419a5ff224072e89ab4904da9

      • \Users\Admin\AppData\Roaming\WinApp\GoogleUpdate.exe

        Filesize

        776KB

        MD5

        f6669c4e5245e525a0a1428001c5e590

        SHA1

        f437c521654e51b7fa2ca4498651e5fe8d1568a0

        SHA256

        3e15d3f1dc5e6440d455a6417fe5bf0d2860b573e6da026059f958e4c07f5b64

        SHA512

        e1c62d067b943dd0236cf40b3952920501ab370ef9339ff51d018597a467c71ab48c7b696e724be82a1790830ea8c77a9560a29419a5ff224072e89ab4904da9

      • memory/1164-77-0x0000000000000000-mapping.dmp

      • memory/1576-60-0x0000000000000000-mapping.dmp

      • memory/1588-59-0x0000000000000000-mapping.dmp

      • memory/1768-76-0x0000000002256000-0x0000000002267000-memory.dmp

        Filesize

        68KB

      • memory/1768-57-0x0000000073F00000-0x00000000744AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1768-55-0x0000000073F00000-0x00000000744AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1768-54-0x0000000075931000-0x0000000075933000-memory.dmp

        Filesize

        8KB

      • memory/1768-75-0x0000000073F00000-0x00000000744AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1768-56-0x0000000002256000-0x0000000002267000-memory.dmp

        Filesize

        68KB

      • memory/1800-88-0x000000000040E758-mapping.dmp

      • memory/1800-91-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-87-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-92-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-84-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-85-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-79-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-80-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1800-82-0x0000000000400000-0x0000000000418000-memory.dmp

        Filesize

        96KB

      • memory/1832-93-0x0000000000000000-mapping.dmp

      • memory/1880-65-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-112-0x0000000073F00000-0x00000000744AB000-memory.dmp

        Filesize

        5.7MB

      • memory/1880-73-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-71-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-68-0x000000000047065E-mapping.dmp

      • memory/1880-67-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-66-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-63-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-62-0x0000000000400000-0x0000000000476000-memory.dmp

        Filesize

        472KB

      • memory/1880-78-0x0000000073F00000-0x00000000744AB000-memory.dmp

        Filesize

        5.7MB

      • memory/2008-97-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-100-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-103-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-102-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-105-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-106-0x0000000000411654-mapping.dmp

      • memory/2008-109-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-110-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-111-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/2008-98-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB