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Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/11/2022, 08:33

General

  • Target

    ae84e891ac6a0b85cd0a7b67409cf9a1190c1924ea200808e8cb165e9a116344.exe

  • Size

    167KB

  • MD5

    3f43ad9460be520e1ea34eb8344d7988

  • SHA1

    2732a9e9874644ebef124a4d9ac376e6f4086ddb

  • SHA256

    ae84e891ac6a0b85cd0a7b67409cf9a1190c1924ea200808e8cb165e9a116344

  • SHA512

    1e64615a5a85200f0d372a726be859d3b9dc27cc93f2bbb4c02575a5cd2bbd4e1c12eea07502414b9e5de6ff78983f8231769a5c5334ea1dd4d8c21c4d977a3d

  • SSDEEP

    3072:pNQKPWDy8I0fFJltZrpReFX3/aQem6/lk0nSTJOZS91hG/1HIHOe:pNSDy8IkFthpNk0nSlt9s1HIu

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/

http://klkjwre77638dfqwieuoi888.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
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • UPX packed file 2 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 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:760
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:1020
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:768
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3408
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:3340
            • C:\Windows\system32\DllHost.exe
              C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
              1⤵
                PID:3240
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                1⤵
                  PID:2880
                • C:\Windows\Explorer.EXE
                  C:\Windows\Explorer.EXE
                  1⤵
                    PID:380
                    • C:\Users\Admin\AppData\Local\Temp\ae84e891ac6a0b85cd0a7b67409cf9a1190c1924ea200808e8cb165e9a116344.exe
                      "C:\Users\Admin\AppData\Local\Temp\ae84e891ac6a0b85cd0a7b67409cf9a1190c1924ea200808e8cb165e9a116344.exe"
                      2⤵
                      • Modifies firewall policy service
                      • UAC bypass
                      • Windows security bypass
                      • Disables RegEdit via registry modification
                      • Windows security modification
                      • Checks whether UAC is enabled
                      • Drops file in Program Files directory
                      • Drops file in Windows directory
                      • Modifies registry class
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of WriteProcessMemory
                      • System policy modification
                      PID:2096
                  • C:\Windows\system32\taskhostw.exe
                    taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                    1⤵
                      PID:2896
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                      1⤵
                        PID:2856
                      • C:\Windows\system32\sihost.exe
                        sihost.exe
                        1⤵
                          PID:2820
                        • C:\Windows\System32\RuntimeBroker.exe
                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                          1⤵
                            PID:4752
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:3704
                            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                              1⤵
                                PID:3504

                              Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

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                              Downloads

                              • memory/2096-133-0x0000000001000000-0x0000000001027000-memory.dmp

                                Filesize

                                156KB

                              • memory/2096-132-0x0000000002440000-0x00000000034CE000-memory.dmp

                                Filesize

                                16.6MB

                              • memory/2096-134-0x0000000002440000-0x00000000034CE000-memory.dmp

                                Filesize

                                16.6MB