Analysis

  • max time kernel
    146s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    17-04-2024 13:36

General

  • Target

    204063581a5aac527fc0be421097ddc37b338cedced74ca6858f88f3d31bcc51.exe

  • Size

    303KB

  • MD5

    09e86355c9c595720b5a6154426c9910

  • SHA1

    83b66aaab60f02c75b43ce10e5b77ba87646e2e7

  • SHA256

    204063581a5aac527fc0be421097ddc37b338cedced74ca6858f88f3d31bcc51

  • SHA512

    4072e6ee0e6535ea9787ca8e38061bf72a9c962f1018117beb5c1869e7c7ca74272e6f7dd7f326fe93ced3f8eee44a59ed7330691ab67b709e2601610a29693b

  • SSDEEP

    6144:H8prBAyFXYy/6LDrWvzVYWMsfKaA9Vpwpp69a:Hi0y/6LDiuWMSFeCII

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 5 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\204063581a5aac527fc0be421097ddc37b338cedced74ca6858f88f3d31bcc51.exe
    "C:\Users\Admin\AppData\Local\Temp\204063581a5aac527fc0be421097ddc37b338cedced74ca6858f88f3d31bcc51.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mlpznqvc\
      2⤵
        PID:1720
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ljygzpkg.exe" C:\Windows\SysWOW64\mlpznqvc\
        2⤵
          PID:3064
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create mlpznqvc binPath= "C:\Windows\SysWOW64\mlpznqvc\ljygzpkg.exe /d\"C:\Users\Admin\AppData\Local\Temp\204063581a5aac527fc0be421097ddc37b338cedced74ca6858f88f3d31bcc51.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3044
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description mlpznqvc "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3052
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start mlpznqvc
          2⤵
          • Launches sc.exe
          PID:2556
        • 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:2700
      • C:\Windows\SysWOW64\mlpznqvc\ljygzpkg.exe
        C:\Windows\SysWOW64\mlpznqvc\ljygzpkg.exe /d"C:\Users\Admin\AppData\Local\Temp\204063581a5aac527fc0be421097ddc37b338cedced74ca6858f88f3d31bcc51.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2720
        • 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:2816

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        12.0MB

        MD5

        83d1b26d534f657b6f43288f7acfe535

        SHA1

        6a57b8b12ef990ffc0059c22c298ac27333aa692

        SHA256

        bd7cd76a97e3ba10060de6ed50731b891b27fc9983620e7df853486a8e6be84d

        SHA512

        7a4f5cac51f6b42d12c25effdd7a00c4ff9b84815862fbbd9bbaa83b51c20d00b8d9e435f294b29b88cdf4e6fac6651b134ef8a3e506040ea582e36063838e50

      • memory/2052-2-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/2052-3-0x0000000000400000-0x00000000007D5000-memory.dmp

        Filesize

        3.8MB

      • memory/2052-7-0x0000000000400000-0x00000000007D5000-memory.dmp

        Filesize

        3.8MB

      • memory/2052-1-0x0000000000960000-0x0000000000A60000-memory.dmp

        Filesize

        1024KB

      • memory/2720-15-0x0000000000400000-0x00000000007D5000-memory.dmp

        Filesize

        3.8MB

      • memory/2720-9-0x0000000000950000-0x0000000000A50000-memory.dmp

        Filesize

        1024KB

      • memory/2720-11-0x0000000000400000-0x00000000007D5000-memory.dmp

        Filesize

        3.8MB

      • memory/2816-34-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-37-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2816-18-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2816-19-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2816-20-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2816-22-0x0000000001C60000-0x0000000001E6F000-memory.dmp

        Filesize

        2.1MB

      • memory/2816-25-0x0000000001C60000-0x0000000001E6F000-memory.dmp

        Filesize

        2.1MB

      • memory/2816-26-0x00000000000A0000-0x00000000000A6000-memory.dmp

        Filesize

        24KB

      • memory/2816-29-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-33-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-32-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-10-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2816-35-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-36-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-14-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2816-38-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-39-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-40-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-41-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-42-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-43-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-44-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-45-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-46-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-47-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-48-0x00000000001F0000-0x0000000000200000-memory.dmp

        Filesize

        64KB

      • memory/2816-49-0x0000000000200000-0x0000000000205000-memory.dmp

        Filesize

        20KB

      • memory/2816-52-0x0000000000200000-0x0000000000205000-memory.dmp

        Filesize

        20KB

      • memory/2816-53-0x0000000005790000-0x0000000005B9B000-memory.dmp

        Filesize

        4.0MB

      • memory/2816-56-0x0000000005790000-0x0000000005B9B000-memory.dmp

        Filesize

        4.0MB

      • memory/2816-57-0x0000000000370000-0x0000000000377000-memory.dmp

        Filesize

        28KB