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Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/09/2023, 07:43

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 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 32 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 behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pbFphueKZdI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp96EC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1056
    • C:\Users\Admin\AppData\Local\Temp\NO#CU-92504 Xls.exe
      "{path}"
      2⤵
        PID:3196
      • 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:3176
        • 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:1324
        • 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:1628

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\NO#CU-92504 Xls.exe.log

        Filesize

        1KB

        MD5

        5200da2e50f24d5d543c3f10674acdcb

        SHA1

        b574a3336839882d799c0a7f635ea238efb934ee

        SHA256

        d2d81c1c9d35bc66149beaa77029bee68664d8512fc1efe373180bab77d61026

        SHA512

        24722a7de3250a6027a411c8b79d0720554c4efd59553f54b94ab77dc21efbf3191e0912901db475f08a6e9c1855d9e9594504d80d27300097418f4384a9d9cb

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

        Filesize

        3KB

        MD5

        f94dc819ca773f1e3cb27abbc9e7fa27

        SHA1

        9a7700efadc5ea09ab288544ef1e3cd876255086

        SHA256

        a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92

        SHA512

        72a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196

      • C:\Users\Admin\AppData\Local\Temp\tmp96EC.tmp

        Filesize

        1KB

        MD5

        84eb4f8731b42eec2524f185021f86de

        SHA1

        5fc9445e68ccd5fc93a74378bbab01781577c51e

        SHA256

        0a864471c4f171ff7d4fa6684b2560353e1feb9d620768489f147a7d5ac04337

        SHA512

        ca306802cafe653970ed85044877c42c438c8c14efbd42a1e220dc671ec26b9340a6952c2656b502ef746ffa7654c61ac00e3280378211020512f70dfcdc60fe

      • memory/1324-32-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1324-28-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1324-34-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1324-31-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1484-11-0x0000000008960000-0x0000000008A28000-memory.dmp

        Filesize

        800KB

      • memory/1484-2-0x0000000005A20000-0x0000000005ABC000-memory.dmp

        Filesize

        624KB

      • memory/1484-9-0x0000000074E70000-0x0000000075620000-memory.dmp

        Filesize

        7.7MB

      • memory/1484-10-0x00000000059C0000-0x00000000059D0000-memory.dmp

        Filesize

        64KB

      • memory/1484-1-0x0000000000EF0000-0x0000000001018000-memory.dmp

        Filesize

        1.2MB

      • memory/1484-12-0x0000000008710000-0x0000000008798000-memory.dmp

        Filesize

        544KB

      • memory/1484-13-0x0000000008820000-0x0000000008886000-memory.dmp

        Filesize

        408KB

      • memory/1484-3-0x0000000006070000-0x0000000006614000-memory.dmp

        Filesize

        5.6MB

      • memory/1484-5-0x00000000059C0000-0x00000000059D0000-memory.dmp

        Filesize

        64KB

      • memory/1484-0-0x0000000074E70000-0x0000000075620000-memory.dmp

        Filesize

        7.7MB

      • memory/1484-4-0x0000000005B60000-0x0000000005BF2000-memory.dmp

        Filesize

        584KB

      • memory/1484-6-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

        Filesize

        40KB

      • memory/1484-7-0x0000000005CF0000-0x0000000005D46000-memory.dmp

        Filesize

        344KB

      • memory/1484-8-0x0000000006DF0000-0x0000000006DFC000-memory.dmp

        Filesize

        48KB

      • memory/1484-21-0x0000000074E70000-0x0000000075620000-memory.dmp

        Filesize

        7.7MB

      • memory/1628-40-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/1628-41-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/1628-38-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/1628-47-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/3176-27-0x00000000087F0000-0x00000000087F8000-memory.dmp

        Filesize

        32KB

      • memory/3176-36-0x0000000005410000-0x0000000005420000-memory.dmp

        Filesize

        64KB

      • memory/3176-37-0x0000000005410000-0x0000000005420000-memory.dmp

        Filesize

        64KB

      • memory/3176-35-0x0000000074E70000-0x0000000075620000-memory.dmp

        Filesize

        7.7MB

      • memory/3176-30-0x0000000005410000-0x0000000005420000-memory.dmp

        Filesize

        64KB

      • memory/3176-22-0x0000000005410000-0x0000000005420000-memory.dmp

        Filesize

        64KB

      • memory/3176-17-0x0000000000400000-0x0000000000488000-memory.dmp

        Filesize

        544KB

      • memory/3176-20-0x0000000074E70000-0x0000000075620000-memory.dmp

        Filesize

        7.7MB