Analysis

  • max time kernel
    146s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2022, 17:41

General

  • Target

    d45e5839f0554c7a75802adbb6c95c227823123a7d5fd26efbc21ef130a827b4.exe

  • Size

    390KB

  • MD5

    a604a8dd0d7f7707a1c98fdb6633d656

  • SHA1

    53d7ae87240aa244e4448e279022df77fba5d572

  • SHA256

    d45e5839f0554c7a75802adbb6c95c227823123a7d5fd26efbc21ef130a827b4

  • SHA512

    05dbc5e80230bdba42d39be332ce22dbf782e0bcdf5c69231b7cf7235c27d44f03e5dcf33207a14f0c42ad9327828b2a76606c6690e2ef1811de60cb2a0cbc9b

  • SSDEEP

    12288:QKrEpuX4lT1nexCWVLqXeEAl5hkDVNYYXkyLHNBGV:QKwpbneYWVqujTiNJXkyzNBGV

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

Signatures

  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:792
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:800
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:392
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2480
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:2492
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3456
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:3380
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:3556
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3292
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                      1⤵
                        PID:3092
                      • C:\Windows\Explorer.EXE
                        C:\Windows\Explorer.EXE
                        1⤵
                          PID:2576
                          • C:\Users\Admin\AppData\Local\Temp\d45e5839f0554c7a75802adbb6c95c227823123a7d5fd26efbc21ef130a827b4.exe
                            "C:\Users\Admin\AppData\Local\Temp\d45e5839f0554c7a75802adbb6c95c227823123a7d5fd26efbc21ef130a827b4.exe"
                            2⤵
                            • UAC bypass
                            • Checks whether UAC is enabled
                            • Enumerates connected drives
                            • Drops file in Windows directory
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            • System policy modification
                            PID:4984
                            • \??\c:\e37aaa15b4e5466584040b7f\update\update.exe
                              c:\e37aaa15b4e5466584040b7f\update\update.exe
                              3⤵
                              • Executes dropped EXE
                              • Drops file in Windows directory
                              PID:4816
                        • C:\Windows\system32\taskhostw.exe
                          taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                          1⤵
                            PID:2620
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:3696
                            • C:\Windows\System32\RuntimeBroker.exe
                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                              1⤵
                                PID:4568

                              Network

                                    MITRE ATT&CK Enterprise v6

                                    Replay Monitor

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                                    Downloads

                                    • C:\e37aaa15b4e5466584040b7f\update\update.exe

                                      Filesize

                                      421KB

                                      MD5

                                      d365077a37e30d78844a221a3c3873ce

                                      SHA1

                                      50c77eb33bd796a051ae50fbdbd1c94c968d18c8

                                      SHA256

                                      0144594a12fce280c1c446ef3d782ff122f0742ff56d22a29881dad8511af54c

                                      SHA512

                                      c81f241c68f2a83880f40b4f75836f4302422f83705f8251c15e539a3bc19fe3fa33b6fe7973a5c1f98a2bbd4dbe99e9494875b08b09b350c96d087acfe3db33

                                    • \??\c:\e37aaa15b4e5466584040b7f\update\update.exe

                                      Filesize

                                      421KB

                                      MD5

                                      d365077a37e30d78844a221a3c3873ce

                                      SHA1

                                      50c77eb33bd796a051ae50fbdbd1c94c968d18c8

                                      SHA256

                                      0144594a12fce280c1c446ef3d782ff122f0742ff56d22a29881dad8511af54c

                                      SHA512

                                      c81f241c68f2a83880f40b4f75836f4302422f83705f8251c15e539a3bc19fe3fa33b6fe7973a5c1f98a2bbd4dbe99e9494875b08b09b350c96d087acfe3db33

                                    • \??\c:\e37aaa15b4e5466584040b7f\update\update.inf

                                      Filesize

                                      36KB

                                      MD5

                                      f27b36f81337dfa6b89c7cde63611e3c

                                      SHA1

                                      173bfb6028631097f7a38b86effcf40f30b74f16

                                      SHA256

                                      dacb5fc81be90e7a07afbd8947b8f2c7537f8706c175fe5f35cac814630eca54

                                      SHA512

                                      9a7b150298767242f0a20cc11752f2541958af40ebed3b01c2c8f95824d8754f9e71a0d705ded950abd80c3aa03114454132b2cb3c0a1a65c4501ef73157e38e

                                    • memory/4984-133-0x0000000001000000-0x0000000001030000-memory.dmp

                                      Filesize

                                      192KB

                                    • memory/4984-132-0x0000000002440000-0x0000000003470000-memory.dmp

                                      Filesize

                                      16.2MB

                                    • memory/4984-138-0x0000000001000000-0x0000000001030000-memory.dmp

                                      Filesize

                                      192KB

                                    • memory/4984-139-0x0000000002440000-0x0000000003470000-memory.dmp

                                      Filesize

                                      16.2MB