Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    17-04-2024 12:22

General

  • Target

    8960100ed18988a177edb0c6825ebe9319cc350c344ce7ce40df4a9d50c44e6f.exe

  • Size

    228KB

  • MD5

    62abaf2cde2460be94b6fc5d5917cf14

  • SHA1

    ef808492171ea4fcc8b85a6ec553544ebff2dc26

  • SHA256

    8960100ed18988a177edb0c6825ebe9319cc350c344ce7ce40df4a9d50c44e6f

  • SHA512

    fb511c078edb9971c8c7c073441f6ef0d1fededa093d7991f6e54c40e7c9144e67c45dbbdec22b5ff93111846f687fcb22456c4b2c03b7b01b3858eaab1792c7

  • SSDEEP

    3072:7VpLtaCoeUUb4Ji0/7t+/KFQbMdLY8aXIbHQSLkJl4C6FD81OL6OwR2Rsb4Mf7U0:JpLt3/bc/taYtLkqKLOOX7

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.

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • 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).

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8960100ed18988a177edb0c6825ebe9319cc350c344ce7ce40df4a9d50c44e6f.exe
    "C:\Users\Admin\AppData\Local\Temp\8960100ed18988a177edb0c6825ebe9319cc350c344ce7ce40df4a9d50c44e6f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qypdmuie\
      2⤵
        PID:2968
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pslwwfgg.exe" C:\Windows\SysWOW64\qypdmuie\
        2⤵
          PID:2616
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create qypdmuie binPath= "C:\Windows\SysWOW64\qypdmuie\pslwwfgg.exe /d\"C:\Users\Admin\AppData\Local\Temp\8960100ed18988a177edb0c6825ebe9319cc350c344ce7ce40df4a9d50c44e6f.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1396
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description qypdmuie "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2728
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start qypdmuie
          2⤵
          • Launches sc.exe
          PID:2564
        • 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:2732
      • C:\Windows\SysWOW64\qypdmuie\pslwwfgg.exe
        C:\Windows\SysWOW64\qypdmuie\pslwwfgg.exe /d"C:\Users\Admin\AppData\Local\Temp\8960100ed18988a177edb0c6825ebe9319cc350c344ce7ce40df4a9d50c44e6f.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2384
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          PID:2744

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\pslwwfgg.exe
        Filesize

        13.1MB

        MD5

        b0c44523ba7274be85427e1edd5ce912

        SHA1

        c26bbc16feeacc0d07bcb992a446560c97e94f56

        SHA256

        ca158742c955304602790895f608e88f3929ab993ade996055f5b3c8d255088d

        SHA512

        bd960fae630444d0382cb1cd801bd6c8cd45f8bf8e4cf4ce3cc37b6ef66a0202d6ec118491c2e4c2b76f080b714e78b92adcb54bcabf628596d145824456237b

      • memory/2384-13-0x0000000000250000-0x0000000000350000-memory.dmp
        Filesize

        1024KB

      • memory/2384-61-0x0000000000400000-0x000000000043F000-memory.dmp
        Filesize

        252KB

      • memory/2384-14-0x00000000003C0000-0x00000000003D3000-memory.dmp
        Filesize

        76KB

      • memory/2384-16-0x0000000000400000-0x000000000043F000-memory.dmp
        Filesize

        252KB

      • memory/2744-34-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-38-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/2744-17-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/2744-62-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/2744-11-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/2744-57-0x00000000001E0000-0x00000000001E7000-memory.dmp
        Filesize

        28KB

      • memory/2744-19-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/2744-20-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/2744-22-0x0000000001920000-0x0000000001B2F000-memory.dmp
        Filesize

        2.1MB

      • memory/2744-25-0x0000000001920000-0x0000000001B2F000-memory.dmp
        Filesize

        2.1MB

      • memory/2744-26-0x0000000000110000-0x0000000000116000-memory.dmp
        Filesize

        24KB

      • memory/2744-29-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-32-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-33-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-56-0x0000000005480000-0x000000000588B000-memory.dmp
        Filesize

        4.0MB

      • memory/2744-35-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-36-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-37-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-8-0x0000000000080000-0x0000000000095000-memory.dmp
        Filesize

        84KB

      • memory/2744-39-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-40-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-41-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-42-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-43-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-44-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-45-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-46-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-47-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-48-0x0000000000140000-0x0000000000150000-memory.dmp
        Filesize

        64KB

      • memory/2744-49-0x00000000001D0000-0x00000000001D5000-memory.dmp
        Filesize

        20KB

      • memory/2744-52-0x00000000001D0000-0x00000000001D5000-memory.dmp
        Filesize

        20KB

      • memory/2744-53-0x0000000005480000-0x000000000588B000-memory.dmp
        Filesize

        4.0MB

      • memory/2784-1-0x0000000000570000-0x0000000000670000-memory.dmp
        Filesize

        1024KB

      • memory/2784-18-0x0000000000400000-0x000000000043F000-memory.dmp
        Filesize

        252KB

      • memory/2784-2-0x0000000000220000-0x0000000000233000-memory.dmp
        Filesize

        76KB

      • memory/2784-3-0x0000000000400000-0x000000000043F000-memory.dmp
        Filesize

        252KB