Analysis

  • max time kernel
    72s
  • max time network
    73s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/10/2024, 22:01

General

  • Target

    Deadfr.exe

  • Size

    35KB

  • MD5

    afc6766fb3b5e48943c754a41f8be1b7

  • SHA1

    a246d866914632b0dad6aa6c21fd979cbdb60345

  • SHA256

    b773c49a75d4b308c5409d9b9111b454849a8e4a8664b7b4e9c60ed0b0b7fa16

  • SHA512

    cf16457a2a1c7043f40b1e0fa982665a90bf2a72ff778f45fec85c48b6cdfd7ec4eafbf1b7bd413d6ca35239137367febf43defa09b7e227901ec267e3487e9d

  • SSDEEP

    384:TyqLXPCCbuGvSmKzJI9tTSULseqqUB7u5C36gYt9ORtpkFTBLT29pZwoJzVvNV4S:9LTXliB75qgDOFk9/LO/hH/jtYaY

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

WDNla7345HFEnugV

Attributes
  • Install_directory

    %Public%

  • install_file

    Dean.exe

  • pastebin_url

    https://pastebin.com/raw/J09JweeH

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 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 6 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Deadfr.exe
    "C:\Users\Admin\AppData\Local\Temp\Deadfr.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Dean" /tr "C:\Users\Public\Dean.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5084
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2128
  • C:\Users\Public\Dean.exe
    C:\Users\Public\Dean.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4756
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4776
    • C:\Users\Public\Dean.exe
      C:\Users\Public\Dean.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1196

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Dean.exe.log

            Filesize

            654B

            MD5

            2ff39f6c7249774be85fd60a8f9a245e

            SHA1

            684ff36b31aedc1e587c8496c02722c6698c1c4e

            SHA256

            e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

            SHA512

            1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Dean.lnk

            Filesize

            971B

            MD5

            9ab678f5a65b1791c6f9a634154d3f68

            SHA1

            cd6d164f27397941a1c3f89d9637cb920d70cfbe

            SHA256

            f1f74c3b84feabf41f3c22e5264a3f544b7c9e9ad84b505714375ca4a49dd4a5

            SHA512

            1ce90211bf0c7f4665a8b6555e2cd8847bcc92e8706f5ca8fc19949da58a7e1177748425be6ecc93f6a4d93e0d86e35e893f9060007f87a30c24afaca34c8abc

          • C:\Users\Public\Dean.exe

            Filesize

            35KB

            MD5

            afc6766fb3b5e48943c754a41f8be1b7

            SHA1

            a246d866914632b0dad6aa6c21fd979cbdb60345

            SHA256

            b773c49a75d4b308c5409d9b9111b454849a8e4a8664b7b4e9c60ed0b0b7fa16

            SHA512

            cf16457a2a1c7043f40b1e0fa982665a90bf2a72ff778f45fec85c48b6cdfd7ec4eafbf1b7bd413d6ca35239137367febf43defa09b7e227901ec267e3487e9d

          • memory/2128-17-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-15-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-7-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-19-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-18-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-9-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-16-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-8-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-14-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/2128-13-0x0000024518A50000-0x0000024518A51000-memory.dmp

            Filesize

            4KB

          • memory/4824-20-0x00007FFDF1893000-0x00007FFDF1895000-memory.dmp

            Filesize

            8KB

          • memory/4824-0-0x00007FFDF1893000-0x00007FFDF1895000-memory.dmp

            Filesize

            8KB

          • memory/4824-6-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

            Filesize

            10.8MB

          • memory/4824-24-0x00007FFDF1890000-0x00007FFDF2351000-memory.dmp

            Filesize

            10.8MB

          • memory/4824-1-0x0000000000300000-0x0000000000310000-memory.dmp

            Filesize

            64KB