Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    20/11/2023, 02:02

General

  • Target

    7e9ccdf57f7fe03c9e2efd738b6490aabed53615f70a101a8c1cd008716fa6d2.exe

  • Size

    338KB

  • MD5

    5c5387efb7f70cd46012c6f8f4cc0e1a

  • SHA1

    c2ad2a7be652d8b73cdeb794b498c03d8f783bc4

  • SHA256

    7e9ccdf57f7fe03c9e2efd738b6490aabed53615f70a101a8c1cd008716fa6d2

  • SHA512

    bc6a38573e87fc6bc7b945ee76f5b8102e5adfa1ff6262356212a0fb66f2b4cb071193df75f05da715627d1d4c5cb2cd733f786371bf271e5ee94f88557de65d

  • SSDEEP

    3072:M9xApN8qo8I+HI0C+iUn9wYaA8MqfvJLAiT12Rerybp80C:wTqoQHIbYatRJLAiT3ry3

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
  • xmrig

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

  • XMRig Miner payload 7 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 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 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).

  • 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\7e9ccdf57f7fe03c9e2efd738b6490aabed53615f70a101a8c1cd008716fa6d2.exe
    "C:\Users\Admin\AppData\Local\Temp\7e9ccdf57f7fe03c9e2efd738b6490aabed53615f70a101a8c1cd008716fa6d2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nmalnafd\
      2⤵
        PID:2984
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\geoprnqw.exe" C:\Windows\SysWOW64\nmalnafd\
        2⤵
          PID:2660
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create nmalnafd binPath= "C:\Windows\SysWOW64\nmalnafd\geoprnqw.exe /d\"C:\Users\Admin\AppData\Local\Temp\7e9ccdf57f7fe03c9e2efd738b6490aabed53615f70a101a8c1cd008716fa6d2.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2228
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description nmalnafd "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2632
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start nmalnafd
          2⤵
          • Launches sc.exe
          PID:2748
        • 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:2484
      • C:\Windows\SysWOW64\nmalnafd\geoprnqw.exe
        C:\Windows\SysWOW64\nmalnafd\geoprnqw.exe /d"C:\Users\Admin\AppData\Local\Temp\7e9ccdf57f7fe03c9e2efd738b6490aabed53615f70a101a8c1cd008716fa6d2.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2580
        • 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:2504
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.200000 -p x -k -a cn/half --cpu-priority 1
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:772

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              10.9MB

              MD5

              fbcdcd8657e45fdf43cb2b77d34feac1

              SHA1

              4aa746531890b5d4af18f0c2f3c189d6348085dd

              SHA256

              5178c187d66db347848721aafa0737b31baf11eca9fb0bc1da8d2d19a86ad51b

              SHA512

              3e5a9639144c0e61271fceefb7fea5698ad4a5f77e8b3ee56c3c4008a2303d4a625fe19c62569af9a35eedac744657c527db53bc7f5e2e4c5687ef5054bcb516

            • C:\Windows\SysWOW64\nmalnafd\geoprnqw.exe

              Filesize

              10.9MB

              MD5

              fbcdcd8657e45fdf43cb2b77d34feac1

              SHA1

              4aa746531890b5d4af18f0c2f3c189d6348085dd

              SHA256

              5178c187d66db347848721aafa0737b31baf11eca9fb0bc1da8d2d19a86ad51b

              SHA512

              3e5a9639144c0e61271fceefb7fea5698ad4a5f77e8b3ee56c3c4008a2303d4a625fe19c62569af9a35eedac744657c527db53bc7f5e2e4c5687ef5054bcb516

            • memory/772-77-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-76-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-75-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-74-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-73-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-72-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-64-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/772-62-0x00000000002B0000-0x00000000003A1000-memory.dmp

              Filesize

              964KB

            • memory/1056-4-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/1056-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/1056-7-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/1056-1-0x00000000009C0000-0x0000000000AC0000-memory.dmp

              Filesize

              1024KB

            • memory/2504-37-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-44-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-25-0x0000000001970000-0x0000000001B7F000-memory.dmp

              Filesize

              2.1MB

            • memory/2504-26-0x0000000000230000-0x0000000000236000-memory.dmp

              Filesize

              24KB

            • memory/2504-29-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-32-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-33-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-34-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-35-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-36-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2504-38-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-39-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-40-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-41-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-42-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-43-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-22-0x0000000001970000-0x0000000001B7F000-memory.dmp

              Filesize

              2.1MB

            • memory/2504-45-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-46-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-47-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-48-0x0000000000280000-0x0000000000290000-memory.dmp

              Filesize

              64KB

            • memory/2504-49-0x0000000000290000-0x0000000000295000-memory.dmp

              Filesize

              20KB

            • memory/2504-52-0x0000000000290000-0x0000000000295000-memory.dmp

              Filesize

              20KB

            • memory/2504-53-0x0000000005970000-0x0000000005D7B000-memory.dmp

              Filesize

              4.0MB

            • memory/2504-56-0x0000000005970000-0x0000000005D7B000-memory.dmp

              Filesize

              4.0MB

            • memory/2504-57-0x00000000002B0000-0x00000000002B7000-memory.dmp

              Filesize

              28KB

            • memory/2504-61-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2504-19-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2504-18-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2504-10-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2504-14-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2504-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2580-17-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/2580-11-0x0000000000400000-0x000000000089D000-memory.dmp

              Filesize

              4.6MB

            • memory/2580-9-0x00000000002D0000-0x00000000003D0000-memory.dmp

              Filesize

              1024KB