Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    19-12-2022 17:32

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General

  • Target

    file.exe

  • Size

    303KB

  • MD5

    9d7c55bebffc368b36387a730bca3591

  • SHA1

    32499cd446ef5d6e89f9b4a6c03227132afd1fde

  • SHA256

    6ade32487b2109f96484539acb27c74e03f7ec48f14075e6c7618547fa2c4773

  • SHA512

    da862b30ffb028ae301fabdde4569fcca3b9551b4ba245c2f0e5a342efe4db4c1549cc45e48360fe8704f3bb8439c063854eb6b6e1d773c4f38d664836fc0527

  • SSDEEP

    6144:CLlP8ArUNJD0QQtrWTvXz+3ng+E49HwchLP3i:CN8A6JD0QQtrW/wnVZH9P3

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    trojantofsee
  • Windows security bypass 2 TTPs 1 IoCs
    evasiontrojan
  • xmrig

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

    minerxmrig
  • XMRig Miner payload 2 IoCs
    miner
  • Creates new service(s) 1 TTPs
    persistence
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Deletes itself 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). Likely ransomware behaviour.

  • 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:2036
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\olzjtaih\
      2⤵
        PID:868
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ztvdztzs.exe" C:\Windows\SysWOW64\olzjtaih\
        2⤵
          PID:1312
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create olzjtaih binPath= "C:\Windows\SysWOW64\olzjtaih\ztvdztzs.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:776
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description olzjtaih "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:524
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start olzjtaih
          2⤵
          • Launches sc.exe
          PID:1228
        • 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:1700
      • C:\Windows\SysWOW64\olzjtaih\ztvdztzs.exe
        C:\Windows\SysWOW64\olzjtaih\ztvdztzs.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:692
        • 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:1284
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1656

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\ztvdztzs.exe
        Filesize

        11.7MB

        MD5

        c6bf87a5ed9508d95850b6dd7efb37d2

        SHA1

        a3b53a57c066f355d62967cc3e96856bfc5b9ce3

        SHA256

        8960787d047fe1a2d21e53b2ca24cedf6023943349f86cb1ca47dbe9e0d37733

        SHA512

        34d8e5094e4bffb69e19a9a5531725a5584fe267ca9f0acdb55606437e97d38d356c5c65c4a9a9b076cb2c212a30d487a00c496584ebb731edb9ea144de0bc0d

        Download Submit

      • C:\Windows\SysWOW64\olzjtaih\ztvdztzs.exe
        Filesize

        11.7MB

        MD5

        c6bf87a5ed9508d95850b6dd7efb37d2

        SHA1

        a3b53a57c066f355d62967cc3e96856bfc5b9ce3

        SHA256

        8960787d047fe1a2d21e53b2ca24cedf6023943349f86cb1ca47dbe9e0d37733

        SHA512

        34d8e5094e4bffb69e19a9a5531725a5584fe267ca9f0acdb55606437e97d38d356c5c65c4a9a9b076cb2c212a30d487a00c496584ebb731edb9ea144de0bc0d

        Download Submit

      • memory/692-76-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/692-74-0x000000000053C000-0x0000000000551000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1284-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1284-92-0x00000000058B0000-0x0000000005CBB000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1284-98-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1284-95-0x0000000000220000-0x0000000000227000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1284-89-0x0000000000210000-0x0000000000215000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1284-86-0x00000000000F0000-0x0000000000100000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1284-83-0x00000000000E0000-0x00000000000E6000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1284-72-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1284-80-0x00000000019F0000-0x0000000001BFF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1284-79-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1656-99-0x0000000000230000-0x0000000000321000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1656-101-0x0000000000230000-0x0000000000321000-memory.dmp

        Filesize

        964KB

        Download

      • memory/2036-58-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/2036-57-0x0000000000230000-0x0000000000243000-memory.dmp

        Filesize

        76KB

        Download

      • memory/2036-54-0x00000000753D1000-0x00000000753D3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/2036-67-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/2036-66-0x000000000051C000-0x0000000000531000-memory.dmp

        Filesize

        84KB

        Download

      • memory/2036-56-0x000000000051C000-0x0000000000531000-memory.dmp

        Filesize

        84KB

        Download