Analysis

  • max time kernel
    160s
  • 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
    30-10-2022 01:43

General

  • Target

    bbea5cc97ec6d480ecc0227db4c3779136df8a31d775de33db653d4005f134c5.exe

  • Size

    426KB

  • MD5

    931cbf8210319f8be81614211fecdb49

  • SHA1

    dc437382347a80e88a2c43bcd13d432ee1aec14e

  • SHA256

    bbea5cc97ec6d480ecc0227db4c3779136df8a31d775de33db653d4005f134c5

  • SHA512

    c6360058a028a2d69507af945ee90b8d3165215a4124d6e9ffd5987d475ec457159e82ce898811f3597f8ba5d529681733951813ba8fa7954bece858b486256e

  • SSDEEP

    12288:FOeUjd8eBbD+OTnvmP/iiqG0Jpig2TB+0x66lf1Tf9frKxPpn9ZmaOrPalQQrTFK:FOeUjd8eBbD+OTnvmP/iiqG0Jpig2TBX

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

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Sality

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

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

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

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in Windows directory 1 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 20 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:780
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:312
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:2492
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
          1⤵
            PID:2504
          • C:\Windows\system32\DllHost.exe
            C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
            1⤵
              PID:3268
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:4500
              • C:\Windows\system32\backgroundTaskHost.exe
                "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                1⤵
                  PID:3376
                • C:\Windows\system32\backgroundTaskHost.exe
                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca
                  1⤵
                    PID:3508
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:4620
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      1⤵
                        PID:3640
                      • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                        1⤵
                          PID:3524
                        • C:\Windows\System32\RuntimeBroker.exe
                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                          1⤵
                            PID:3424
                          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                            1⤵
                              PID:3360
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                              1⤵
                                PID:3080
                              • C:\Windows\Explorer.EXE
                                C:\Windows\Explorer.EXE
                                1⤵
                                  PID:2640
                                  • C:\Users\Admin\AppData\Local\Temp\bbea5cc97ec6d480ecc0227db4c3779136df8a31d775de33db653d4005f134c5.exe
                                    "C:\Users\Admin\AppData\Local\Temp\bbea5cc97ec6d480ecc0227db4c3779136df8a31d775de33db653d4005f134c5.exe"
                                    2⤵
                                    • Modifies firewall policy service
                                    • UAC bypass
                                    • Windows security bypass
                                    • Windows security modification
                                    • Checks whether UAC is enabled
                                    • Drops file in Windows directory
                                    • Suspicious behavior: EnumeratesProcesses
                                    • Suspicious use of AdjustPrivilegeToken
                                    • Suspicious use of WriteProcessMemory
                                    • System policy modification
                                    PID:4188
                                    • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
                                      "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
                                      3⤵
                                      • Executes dropped EXE
                                      PID:4504
                                • C:\Windows\system32\taskhostw.exe
                                  taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                                  1⤵
                                    PID:2688
                                  • C:\Windows\system32\fontdrvhost.exe
                                    "fontdrvhost.exe"
                                    1⤵
                                      PID:788

                                    Network

                                    MITRE ATT&CK Enterprise v6

                                    Replay Monitor

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                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

                                      Filesize

                                      426KB

                                      MD5

                                      931cbf8210319f8be81614211fecdb49

                                      SHA1

                                      dc437382347a80e88a2c43bcd13d432ee1aec14e

                                      SHA256

                                      bbea5cc97ec6d480ecc0227db4c3779136df8a31d775de33db653d4005f134c5

                                      SHA512

                                      c6360058a028a2d69507af945ee90b8d3165215a4124d6e9ffd5987d475ec457159e82ce898811f3597f8ba5d529681733951813ba8fa7954bece858b486256e

                                    • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

                                      Filesize

                                      426KB

                                      MD5

                                      931cbf8210319f8be81614211fecdb49

                                      SHA1

                                      dc437382347a80e88a2c43bcd13d432ee1aec14e

                                      SHA256

                                      bbea5cc97ec6d480ecc0227db4c3779136df8a31d775de33db653d4005f134c5

                                      SHA512

                                      c6360058a028a2d69507af945ee90b8d3165215a4124d6e9ffd5987d475ec457159e82ce898811f3597f8ba5d529681733951813ba8fa7954bece858b486256e

                                    • memory/4188-132-0x0000000000400000-0x00000000006A4000-memory.dmp

                                      Filesize

                                      2.6MB

                                    • memory/4188-133-0x00000000025C0000-0x000000000364E000-memory.dmp

                                      Filesize

                                      16.6MB

                                    • memory/4188-134-0x00000000025C0000-0x000000000364E000-memory.dmp

                                      Filesize

                                      16.6MB

                                    • memory/4188-138-0x0000000000400000-0x00000000006A4000-memory.dmp

                                      Filesize

                                      2.6MB

                                    • memory/4188-139-0x00000000025C0000-0x000000000364E000-memory.dmp

                                      Filesize

                                      16.6MB

                                    • memory/4504-135-0x0000000000000000-mapping.dmp

                                    • memory/4504-140-0x0000000000400000-0x00000000006A4000-memory.dmp

                                      Filesize

                                      2.6MB

                                    • memory/4504-141-0x0000000000400000-0x00000000006A4000-memory.dmp

                                      Filesize

                                      2.6MB