Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/10/2023, 12:45

General

  • Target

    file.exe

  • Size

    195KB

  • MD5

    cc2db916f8e2020ed1cf4f741777d101

  • SHA1

    40e5d582687651ec748be305901738e009a77c9b

  • SHA256

    b8de746feded9dbd1fb290b18d44d33eb02aaa069f789a92fb630ffa585def95

  • SHA512

    a527fd44fef11e875c043a92d08e28b307075ab7a498491dc929883f65bdaf1a69a1e046557960406dec925fc8a6f48ec68ae4ec2cc9e98775b34d372741f6e1

  • SSDEEP

    3072:pPTBMwuu/85WrfofsEeF3IedhnrA7kdSzLYrvNR/4k9Y5IAOmKT0:hTBMo/85QgheFNXrr04zNR/r989

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4676
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bupctagy\
      2⤵
        PID:4940
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ileppyzz.exe" C:\Windows\SysWOW64\bupctagy\
        2⤵
          PID:1000
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create bupctagy binPath= "C:\Windows\SysWOW64\bupctagy\ileppyzz.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2664
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description bupctagy "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4688
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start bupctagy
          2⤵
          • Launches sc.exe
          PID:4488
        • C:\Windows\SysWOW64\netsh.exe
          "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
          2⤵
          • Modifies Windows Firewall
          PID:4168
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4676 -s 656
          2⤵
          • Program crash
          PID:4408
      • C:\Windows\SysWOW64\bupctagy\ileppyzz.exe
        C:\Windows\SysWOW64\bupctagy\ileppyzz.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2184
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          PID:5048
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2184 -s 552
          2⤵
          • Program crash
          PID:4980
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4676 -ip 4676
        1⤵
          PID:1216
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2184 -ip 2184
          1⤵
            PID:4976

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\ileppyzz.exe

            Filesize

            13.3MB

            MD5

            2786587a1888da7520430e4b42de7e80

            SHA1

            8913796e0c9baa3eb33ce021ff59bebf352ee607

            SHA256

            a3cc6204ffd0c66af7d781375d6cd16110b0faec3c8e37d98c5a16eff9e4598e

            SHA512

            3a138a7114a5f4922f9373b06f7c9e6d91d24cf61ea6ff5caa0af66acf5a2aff9b7fc92ff755c28a50cdd3af4a929208c1f6e7245a869fd472e31c6b8169e305

          • C:\Windows\SysWOW64\bupctagy\ileppyzz.exe

            Filesize

            13.3MB

            MD5

            2786587a1888da7520430e4b42de7e80

            SHA1

            8913796e0c9baa3eb33ce021ff59bebf352ee607

            SHA256

            a3cc6204ffd0c66af7d781375d6cd16110b0faec3c8e37d98c5a16eff9e4598e

            SHA512

            3a138a7114a5f4922f9373b06f7c9e6d91d24cf61ea6ff5caa0af66acf5a2aff9b7fc92ff755c28a50cdd3af4a929208c1f6e7245a869fd472e31c6b8169e305

          • memory/2184-18-0x0000000000400000-0x00000000005A8000-memory.dmp

            Filesize

            1.7MB

          • memory/2184-11-0x0000000000750000-0x0000000000850000-memory.dmp

            Filesize

            1024KB

          • memory/2184-12-0x0000000000400000-0x00000000005A8000-memory.dmp

            Filesize

            1.7MB

          • memory/4676-2-0x0000000000680000-0x0000000000693000-memory.dmp

            Filesize

            76KB

          • memory/4676-3-0x0000000000400000-0x00000000005A8000-memory.dmp

            Filesize

            1.7MB

          • memory/4676-8-0x0000000000400000-0x00000000005A8000-memory.dmp

            Filesize

            1.7MB

          • memory/4676-10-0x0000000000680000-0x0000000000693000-memory.dmp

            Filesize

            76KB

          • memory/4676-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

            Filesize

            1024KB

          • memory/5048-34-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-39-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-19-0x0000000000800000-0x0000000000815000-memory.dmp

            Filesize

            84KB

          • memory/5048-21-0x0000000000800000-0x0000000000815000-memory.dmp

            Filesize

            84KB

          • memory/5048-22-0x0000000002400000-0x000000000260F000-memory.dmp

            Filesize

            2.1MB

          • memory/5048-25-0x0000000002400000-0x000000000260F000-memory.dmp

            Filesize

            2.1MB

          • memory/5048-26-0x00000000009F0000-0x00000000009F6000-memory.dmp

            Filesize

            24KB

          • memory/5048-29-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-32-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-33-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-13-0x0000000000800000-0x0000000000815000-memory.dmp

            Filesize

            84KB

          • memory/5048-35-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-36-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-37-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-38-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-17-0x0000000000800000-0x0000000000815000-memory.dmp

            Filesize

            84KB

          • memory/5048-40-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-42-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-41-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-44-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-43-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-45-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-46-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-47-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-49-0x0000000001BE0000-0x0000000001BE5000-memory.dmp

            Filesize

            20KB

          • memory/5048-48-0x0000000000E80000-0x0000000000E90000-memory.dmp

            Filesize

            64KB

          • memory/5048-52-0x0000000001BE0000-0x0000000001BE5000-memory.dmp

            Filesize

            20KB

          • memory/5048-53-0x0000000007400000-0x000000000780B000-memory.dmp

            Filesize

            4.0MB

          • memory/5048-56-0x0000000007400000-0x000000000780B000-memory.dmp

            Filesize

            4.0MB

          • memory/5048-57-0x0000000001BF0000-0x0000000001BF7000-memory.dmp

            Filesize

            28KB