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Analysis

  • max time kernel
    153s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 23:38

General

  • Target

    f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe

  • Size

    630KB

  • MD5

    4ffa402c3a2a75f91e4765f930a6912d

  • SHA1

    bf9dc1b017cbab7012b5b73f4fec260663743bb9

  • SHA256

    f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

  • SHA512

    77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

  • SSDEEP

    12288:1026yDWbokVvKYPaq7mforb1ISwFXYl4mM87POGh+yY5OOFB:1026y6zVyYPqgdISVM87POLfB

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 6 IoCs
  • Sality

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

  • UAC bypass 3 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

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

  • Loads dropped DLL 3 IoCs
  • Windows security modification 2 TTPs 14 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 11 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 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\dwm.exe
    "dwm.exe"
    1⤵
      PID:332
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3416
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:4568
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
          1⤵
            PID:2972
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:4668
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3716
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3500
                • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                  1⤵
                    PID:3344
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3256
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                      1⤵
                        PID:2976
                      • C:\Windows\Explorer.EXE
                        C:\Windows\Explorer.EXE
                        1⤵
                          PID:2152
                          • C:\Users\Admin\AppData\Local\Temp\f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe
                            "C:\Users\Admin\AppData\Local\Temp\f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.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:2708
                            • 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⤵
                              • Modifies firewall policy service
                              • UAC bypass
                              • Windows security bypass
                              • Executes dropped EXE
                              • Loads dropped DLL
                              • Windows security modification
                              • Checks whether UAC is enabled
                              • Enumerates connected drives
                              • Drops autorun.inf file
                              • Drops file in Program Files directory
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of WriteProcessMemory
                              • System policy modification
                              PID:4916
                        • C:\Windows\system32\taskhostw.exe
                          taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                          1⤵
                            PID:2576
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                            1⤵
                              PID:2444
                            • C:\Windows\system32\sihost.exe
                              sihost.exe
                              1⤵
                                PID:2416
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:792
                                • C:\Windows\system32\fontdrvhost.exe
                                  "fontdrvhost.exe"
                                  1⤵
                                    PID:784

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

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                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Temp\0E56C49D_Rar\f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567.exe

                                    Filesize

                                    558KB

                                    MD5

                                    7bde88a61e13bb4fad02a1501cb874dc

                                    SHA1

                                    d35869c8c02920bb6dfb96eb09fca608fe8cd506

                                    SHA256

                                    4b96eaa04499ba7946cafe281ec34da60265d31313131072996b5fc784bab731

                                    SHA512

                                    41157e578994e1e3a4e435f3186665c1d95b31cbb42abae8961037e2fdb0f3c40dd2ce852eeacbc6a6c12970fddadfa4cc7df487b0c7d722050fe3ba3a7ee61b

                                  • C:\Users\Admin\AppData\Local\Temp\nsaC809.tmp\InstallOptions.dll

                                    Filesize

                                    15KB

                                    MD5

                                    6e663f1a0de94bc05d64d020da5d6f36

                                    SHA1

                                    c5abb0033776d6ab1f07e5b3568f7d64f90e5b04

                                    SHA256

                                    458b70e1745dc6e768d2338ccf3e6e86436488954ca3763472d8ffec4e7177e4

                                    SHA512

                                    2a037c39f3a08d4a80494227990f36c4fef2f73c4a6ad74dcc334317a1372234c25d08d8b80d79e126881a49fa4b3f2fffe3604c959d9ceceb47acc7192cc6a5

                                  • C:\Users\Admin\AppData\Local\Temp\nsaC809.tmp\InstallOptions.dll

                                    Filesize

                                    15KB

                                    MD5

                                    6e663f1a0de94bc05d64d020da5d6f36

                                    SHA1

                                    c5abb0033776d6ab1f07e5b3568f7d64f90e5b04

                                    SHA256

                                    458b70e1745dc6e768d2338ccf3e6e86436488954ca3763472d8ffec4e7177e4

                                    SHA512

                                    2a037c39f3a08d4a80494227990f36c4fef2f73c4a6ad74dcc334317a1372234c25d08d8b80d79e126881a49fa4b3f2fffe3604c959d9ceceb47acc7192cc6a5

                                  • C:\Users\Admin\AppData\Local\Temp\nsaC809.tmp\System.dll

                                    Filesize

                                    11KB

                                    MD5

                                    b9f430f71c7144d8ff4ab94be2785aa6

                                    SHA1

                                    c5c1e153caff7ad1d221a9acc8bbb831f05ccb05

                                    SHA256

                                    b496e81a74ce871236abcd096fb9a6b210b456bebaa7464fa844b3241e51a655

                                    SHA512

                                    c7ce431b6a1493fd7d1fe1b1c823ad22b582c43c8eb2fb6a471c648dd9df9953277c89932c66afd598d43ea36f4a8602e84cd175115266943071cbc8ce204099

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

                                    Filesize

                                    630KB

                                    MD5

                                    4ffa402c3a2a75f91e4765f930a6912d

                                    SHA1

                                    bf9dc1b017cbab7012b5b73f4fec260663743bb9

                                    SHA256

                                    f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

                                    SHA512

                                    77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

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

                                    Filesize

                                    630KB

                                    MD5

                                    4ffa402c3a2a75f91e4765f930a6912d

                                    SHA1

                                    bf9dc1b017cbab7012b5b73f4fec260663743bb9

                                    SHA256

                                    f6a3faea8cde562aeeff55d082d41c09a365b08e01d04cb697b0e51632638567

                                    SHA512

                                    77cfded06a7ca16cc4b13046dd490f21d65f48b15d46d9c8c3b43c40386def62cda069e2e7c36f6f5100030fb2357e82c75eb8c0d74c12469b7cde8460eba354

                                  • C:\Windows\SYSTEM.INI

                                    Filesize

                                    257B

                                    MD5

                                    8c85b16273effceb224f227754122224

                                    SHA1

                                    c85d4d7b7a0dcfe1d74b2d5a9dd74bb201e440a5

                                    SHA256

                                    f5a3422b4988750f17ec20d7657a8175660d9a6b7020aa80be8f1078722107c4

                                    SHA512

                                    611251c64cbc643ae58b351f090e427cc130e0c0116bed9e3b3b798a9bdc387608728d41cafc94779666bb1da5b3ddb06d15bf6f27afdf386dbb0a0043c9e05b

                                  • memory/2708-133-0x0000000002550000-0x00000000035DE000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/2708-134-0x0000000002550000-0x00000000035DE000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/2708-135-0x0000000002550000-0x00000000035DE000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/2708-132-0x0000000000400000-0x00000000005F5000-memory.dmp

                                    Filesize

                                    2.0MB

                                  • memory/2708-139-0x0000000000400000-0x00000000005F5000-memory.dmp

                                    Filesize

                                    2.0MB

                                  • memory/4916-145-0x0000000004BD0000-0x0000000005C5E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/4916-144-0x0000000000400000-0x00000000005F5000-memory.dmp

                                    Filesize

                                    2.0MB

                                  • memory/4916-143-0x0000000002601000-0x0000000002603000-memory.dmp

                                    Filesize

                                    8KB

                                  • memory/4916-148-0x0000000004BD0000-0x0000000005C5E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/4916-149-0x0000000000400000-0x00000000005F5000-memory.dmp

                                    Filesize

                                    2.0MB