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Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    10/01/2023, 13:20

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General

  • Target

    file.exe

  • Size

    280KB

  • MD5

    23bdd59a95c007e5c165a47808505b77

  • SHA1

    b3b5b07187ec4b00a541bd59fd83c1721271dcb4

  • SHA256

    a7114af4127ee340e63f40e2a1726c3bd7af85b17bdf33d199b8ea7f3b35d07b

  • SHA512

    15c914756e5d8af23b6a1c2ec996345b84e12b3c9e6bdae49e93cfeb427a60edee9ee2355c2d6aa276eecd9b6da7da3858f7f9e4e4d35e9ada655dccc7c8dd80

  • SSDEEP

    3072:dE7XEG90yMuLASn3UN9NLr5svVsRgcX92qu1FXQ8mT2m4FwCpjKpEAHQLj/fd:dmWnuL/3UN9h9Forg8mTnEmQLr

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:1744
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ysqezjwv\
      2⤵
        PID:1508
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ntgbuboj.exe" C:\Windows\SysWOW64\ysqezjwv\
        2⤵
          PID:1460
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ysqezjwv binPath= "C:\Windows\SysWOW64\ysqezjwv\ntgbuboj.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1824
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ysqezjwv "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:528
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ysqezjwv
          2⤵
          • Launches sc.exe
          PID:1836
        • 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:808
      • C:\Windows\SysWOW64\ysqezjwv\ntgbuboj.exe
        C:\Windows\SysWOW64\ysqezjwv\ntgbuboj.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:700
        • 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:556
          • 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:1212

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        13.8MB

        MD5

        35a01bb83c75f9bd250fdc004c2de2b4

        SHA1

        731856599ab13790c7142cf942f31c40fe9a328b

        SHA256

        ebdfacd3a9be11eac5410bfb7e90a969edb321bd21187efc9f9211a7e6537b2e

        SHA512

        c246b5cb96775e905df759862a1b947a46f5d205c1597608e6f69d07e4178805a40f164fe5839dd31702cd8628d3b818f10aa7e6318f18a75e8ce006c24a1136

        Download Submit

      • C:\Windows\SysWOW64\ysqezjwv\ntgbuboj.exe
        Filesize

        13.8MB

        MD5

        35a01bb83c75f9bd250fdc004c2de2b4

        SHA1

        731856599ab13790c7142cf942f31c40fe9a328b

        SHA256

        ebdfacd3a9be11eac5410bfb7e90a969edb321bd21187efc9f9211a7e6537b2e

        SHA512

        c246b5cb96775e905df759862a1b947a46f5d205c1597608e6f69d07e4178805a40f164fe5839dd31702cd8628d3b818f10aa7e6318f18a75e8ce006c24a1136

        Download Submit

      • memory/556-83-0x00000000000E0000-0x00000000000E6000-memory.dmp

        Filesize

        24KB

        Download

      • memory/556-86-0x00000000001E0000-0x00000000001F0000-memory.dmp

        Filesize

        64KB

        Download

      • memory/556-98-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/556-95-0x00000000002F0000-0x00000000002F7000-memory.dmp

        Filesize

        28KB

        Download

      • memory/556-92-0x00000000058C0000-0x0000000005CCB000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/556-89-0x0000000000290000-0x0000000000295000-memory.dmp

        Filesize

        20KB

        Download

      • memory/556-80-0x0000000001900000-0x0000000001B0F000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/556-78-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/556-71-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/556-69-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

        Download

      • memory/700-74-0x0000000002D9D000-0x0000000002DAE000-memory.dmp

        Filesize

        68KB

        Download

      • memory/700-77-0x0000000000400000-0x0000000002BAD000-memory.dmp

        Filesize

        39.7MB

        Download

      • memory/1212-99-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1212-101-0x0000000000080000-0x0000000000171000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1744-54-0x0000000075631000-0x0000000075633000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1744-58-0x0000000000400000-0x0000000002BAD000-memory.dmp

        Filesize

        39.7MB

        Download

      • memory/1744-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1744-56-0x0000000002D8D000-0x0000000002D9E000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1744-67-0x0000000000400000-0x0000000002BAD000-memory.dmp

        Filesize

        39.7MB

        Download

      • memory/1744-66-0x0000000002D8D000-0x0000000002D9E000-memory.dmp

        Filesize

        68KB

        Download