Analysis

  • max time kernel
    141s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/06/2024, 21:07

General

  • Target

    43bf73e410e3b06f7aaf6e58e34e67371509963938f154585747faeef42c248c.exe

  • Size

    336KB

  • MD5

    986125409916faea3e1e3cb81df08b1f

  • SHA1

    1da335b4d05e55d038ce30b7abdf110ecd0d8145

  • SHA256

    43bf73e410e3b06f7aaf6e58e34e67371509963938f154585747faeef42c248c

  • SHA512

    ef0585ed5fbe4e5e1bb8e6cc29205329f6450fdc8a2ac016eedf01c09c0bd97156950c6d4ff22fd516128c7bdd15d2c6ceab7cfdc1041a0e231e4e13f0b0b324

  • SSDEEP

    6144:vYZTNk3D6LyUXwLLk+cR3qh0GQ43VJRD0ew+/UO:vSNC80I+cR3R03VseuO

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • UPX dump on OEP (original entry point) 12 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • UPX packed file 12 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • AutoIT Executable 10 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 5 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\43bf73e410e3b06f7aaf6e58e34e67371509963938f154585747faeef42c248c.exe
    "C:\Users\Admin\AppData\Local\Temp\43bf73e410e3b06f7aaf6e58e34e67371509963938f154585747faeef42c248c.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Disables RegEdit via registry modification
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies Internet Explorer start page
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3340
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /C AT /delete /yes
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3292
      • C:\Windows\SysWOW64\at.exe
        AT /delete /yes
        3⤵
          PID:5100
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /C AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\gphone.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4956
        • C:\Windows\SysWOW64\at.exe
          AT 09:00 /interactive /EVERY:m,t,w,th,f,s,su C:\Windows\system32\gphone.exe
          3⤵
            PID:2916
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /C cacls "C:\system volume information" /e /g "Admin":f
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1200
          • C:\Windows\SysWOW64\cacls.exe
            cacls "C:\system volume information" /e /g "Admin":f
            3⤵
              PID:3300
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /C cacls "C:\system volume information" /e /g "Admin":f
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3704
            • C:\Windows\SysWOW64\cacls.exe
              cacls "C:\system volume information" /e /g "Admin":f
              3⤵
                PID:4736
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4100,i,14221647728265121051,6840906015709541562,262144 --variations-seed-version --mojo-platform-channel-handle=3960 /prefetch:8
            1⤵
              PID:3116

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  • C:\Windows\SysWOW64\autorun.ini

                    Filesize

                    96B

                    MD5

                    0450bd6f856c038a41ab0e645b3b293b

                    SHA1

                    ebbca685215823672fd692f6c3612f06dc30e084

                    SHA256

                    11c6c38ee3e9cf9802cac107f4e4c24a070b0e43467842f401feee33b6967d5d

                    SHA512

                    d1b0ed2662b274abd80e8d33775fcfaa30fe693707dc61ff2e0c2bd2f2ce50d2f3cac5d2a9f4f2fdf4232ebe72206fd47b86305d0c4d4d1bd147ba913e110fb8

                  • C:\Windows\gphone.exe

                    Filesize

                    336KB

                    MD5

                    986125409916faea3e1e3cb81df08b1f

                    SHA1

                    1da335b4d05e55d038ce30b7abdf110ecd0d8145

                    SHA256

                    43bf73e410e3b06f7aaf6e58e34e67371509963938f154585747faeef42c248c

                    SHA512

                    ef0585ed5fbe4e5e1bb8e6cc29205329f6450fdc8a2ac016eedf01c09c0bd97156950c6d4ff22fd516128c7bdd15d2c6ceab7cfdc1041a0e231e4e13f0b0b324

                  • memory/3340-33-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-30-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-31-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-32-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-0-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-37-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-38-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-39-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-42-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-43-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB

                  • memory/3340-44-0x0000000000400000-0x00000000004B5000-memory.dmp

                    Filesize

                    724KB