Analysis

  • max time kernel
    151s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-09-2023 13:54

General

  • Target

    NO#CU-92504 Xls.exe

  • Size

    1.1MB

  • MD5

    59d184058f8e0a314db11d6f07f600fd

  • SHA1

    5e4b55295fd2b4cc5965fa1e8b322260c5d2a2b6

  • SHA256

    65df886edbea1a5bc833dba4e8e5126ad6326fa44f49e146a9c4b8b34fe75333

  • SHA512

    94adda18b842f927693d6831becbb10c249867c466cb3f2659dc1def9ae05024c7d8cf8a4567fc19f5a1c67495a7994010e1e3e3b3f7784f55f8f7916e190d8c

  • SSDEEP

    24576:mZRToVSu+nsc24YQeP18a5v8UKyd0c7u3yd2OluON4fA9uC:mZRToAu+ns082evFbdLu3yd2OluON4ff

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.lucd.shop
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @lucd.shop

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • NirSoft MailPassView 5 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 9 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NO#CU-92504 Xls.exe
    "C:\Users\Admin\AppData\Local\Temp\NO#CU-92504 Xls.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1412
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pbFphueKZdI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3459.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:928
    • C:\Users\Admin\AppData\Local\Temp\NO#CU-92504 Xls.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1044
      • 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\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        PID:3736
      • 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\holderwb.txt"
        3⤵
          PID:3456

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      3KB

      MD5

      f94dc819ca773f1e3cb27abbc9e7fa27

      SHA1

      9a7700efadc5ea09ab288544ef1e3cd876255086

      SHA256

      a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

      SHA512

      72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

    • C:\Users\Admin\AppData\Local\Temp\tmp3459.tmp

      Filesize

      1KB

      MD5

      f28fe47f8da4ffa512a7ee4f7ddc11f5

      SHA1

      fa4d63a6b768602f24632e63af36e777592eb02d

      SHA256

      f5e26cd4dac383b6e77de96474b0f228694118ecd7477cca9059b7bd998ff90a

      SHA512

      5e42ab94ad041445d69aaf5d78a701c6d3f1758c11ec8c95cc54ee7da179ad2dd270eb3cf80a141b4c718ffee47279aedd0103472a9dbfc2c03bf78568b60f1d

    • memory/1044-36-0x00000000055D0000-0x00000000055E0000-memory.dmp

      Filesize

      64KB

    • memory/1044-35-0x00000000055D0000-0x00000000055E0000-memory.dmp

      Filesize

      64KB

    • memory/1044-34-0x00000000751E0000-0x0000000075990000-memory.dmp

      Filesize

      7.7MB

    • memory/1044-29-0x00000000055D0000-0x00000000055E0000-memory.dmp

      Filesize

      64KB

    • memory/1044-26-0x0000000007DD0000-0x0000000007DD8000-memory.dmp

      Filesize

      32KB

    • memory/1044-21-0x00000000055D0000-0x00000000055E0000-memory.dmp

      Filesize

      64KB

    • memory/1044-19-0x00000000751E0000-0x0000000075990000-memory.dmp

      Filesize

      7.7MB

    • memory/1044-17-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/1412-8-0x0000000007980000-0x000000000798C000-memory.dmp

      Filesize

      48KB

    • memory/1412-5-0x0000000004B50000-0x0000000004B60000-memory.dmp

      Filesize

      64KB

    • memory/1412-12-0x0000000005F70000-0x0000000005FF8000-memory.dmp

      Filesize

      544KB

    • memory/1412-13-0x0000000006000000-0x0000000006066000-memory.dmp

      Filesize

      408KB

    • memory/1412-10-0x0000000004B50000-0x0000000004B60000-memory.dmp

      Filesize

      64KB

    • memory/1412-9-0x00000000751E0000-0x0000000075990000-memory.dmp

      Filesize

      7.7MB

    • memory/1412-0-0x00000000751E0000-0x0000000075990000-memory.dmp

      Filesize

      7.7MB

    • memory/1412-20-0x00000000751E0000-0x0000000075990000-memory.dmp

      Filesize

      7.7MB

    • memory/1412-7-0x0000000004E60000-0x0000000004EB6000-memory.dmp

      Filesize

      344KB

    • memory/1412-6-0x0000000004B60000-0x0000000004B6A000-memory.dmp

      Filesize

      40KB

    • memory/1412-1-0x0000000000030000-0x0000000000158000-memory.dmp

      Filesize

      1.2MB

    • memory/1412-11-0x00000000079A0000-0x0000000007A68000-memory.dmp

      Filesize

      800KB

    • memory/1412-2-0x0000000004BB0000-0x0000000004C4C000-memory.dmp

      Filesize

      624KB

    • memory/1412-3-0x0000000005200000-0x00000000057A4000-memory.dmp

      Filesize

      5.6MB

    • memory/1412-4-0x0000000004C50000-0x0000000004CE2000-memory.dmp

      Filesize

      584KB

    • memory/3456-37-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/3456-39-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/3456-40-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/3456-47-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/3736-33-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3736-32-0x0000000000420000-0x00000000004E9000-memory.dmp

      Filesize

      804KB

    • memory/3736-31-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3736-30-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3736-27-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB