Analysis

  • max time kernel
    125s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:04

General

  • Target

    1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f.exe

  • Size

    672KB

  • MD5

    4562f9542486b1aa6bf992123ded1f91

  • SHA1

    e9744f0a0262c79094e4c4395d0465a30cccd2d9

  • SHA256

    1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f

  • SHA512

    f43cece6b18792dfa2c6e8a04c68ceab1c9ce1a9ac6f30501166d1a51b2c63044ccad2e15e9c9d3c7f154eb9c6a368f5073373ddfdd25080a450b5ed06f5cd6c

  • SSDEEP

    12288:zNdwLIYTAGmmvNOFvXhJfnUhhrBoZ5p+cKdxFu2BYGqA8kKZtXhLVWdI:ZdwhAGmgevX+hrBu/GO2BYG38kKxpK

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

  • 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 2 IoCs
  • UPX packed file 4 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\dwm.exe
    "dwm.exe"
    1⤵
      PID:384
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
      1⤵
        PID:2444
      • C:\Windows\Explorer.EXE
        C:\Windows\Explorer.EXE
        1⤵
          PID:2864
          • C:\Users\Admin\AppData\Local\Temp\1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f.exe
            "C:\Users\Admin\AppData\Local\Temp\1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f.exe"
            2⤵
            • Modifies firewall policy service
            • UAC bypass
            • Windows security bypass
            • Checks computer location settings
            • 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:1564
            • C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe
              "C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe"
              3⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Checks whether UAC is enabled
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:2572
              • C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe
                "C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe" -downpower
                4⤵
                • Executes dropped EXE
                PID:5044
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
          1⤵
            PID:1368
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3704
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca
              1⤵
                PID:2772
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:4672
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:3584
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:3440
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      1⤵
                        PID:3372
                      • C:\Windows\system32\DllHost.exe
                        C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                        1⤵
                          PID:3276
                        • C:\Windows\system32\taskhostw.exe
                          taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                          1⤵
                            PID:2600
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2404
                            • C:\Windows\system32\fontdrvhost.exe
                              "fontdrvhost.exe"
                              1⤵
                                PID:804
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:800

                                Network

                                MITRE ATT&CK Enterprise v6

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe

                                  Filesize

                                  672KB

                                  MD5

                                  4562f9542486b1aa6bf992123ded1f91

                                  SHA1

                                  e9744f0a0262c79094e4c4395d0465a30cccd2d9

                                  SHA256

                                  1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f

                                  SHA512

                                  f43cece6b18792dfa2c6e8a04c68ceab1c9ce1a9ac6f30501166d1a51b2c63044ccad2e15e9c9d3c7f154eb9c6a368f5073373ddfdd25080a450b5ed06f5cd6c

                                • C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe

                                  Filesize

                                  672KB

                                  MD5

                                  4562f9542486b1aa6bf992123ded1f91

                                  SHA1

                                  e9744f0a0262c79094e4c4395d0465a30cccd2d9

                                  SHA256

                                  1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f

                                  SHA512

                                  f43cece6b18792dfa2c6e8a04c68ceab1c9ce1a9ac6f30501166d1a51b2c63044ccad2e15e9c9d3c7f154eb9c6a368f5073373ddfdd25080a450b5ed06f5cd6c

                                • C:\Users\Admin\AppData\Local\Temp\wps\~e56cb34\Au_.exe

                                  Filesize

                                  672KB

                                  MD5

                                  4562f9542486b1aa6bf992123ded1f91

                                  SHA1

                                  e9744f0a0262c79094e4c4395d0465a30cccd2d9

                                  SHA256

                                  1a1b2bc15397564dd16ab4bbebab352adecef93b644707ea067256a68ba4945f

                                  SHA512

                                  f43cece6b18792dfa2c6e8a04c68ceab1c9ce1a9ac6f30501166d1a51b2c63044ccad2e15e9c9d3c7f154eb9c6a368f5073373ddfdd25080a450b5ed06f5cd6c

                                • C:\Users\Admin\AppData\Local\tempuninstall.ini

                                  Filesize

                                  106B

                                  MD5

                                  bd958e23063549ded0242f993838d77f

                                  SHA1

                                  ce5dc6483128e22354eb1f7341c1d6301be8ec9b

                                  SHA256

                                  ac5042159b51b353e54e8a42189c2267d8027a1a87b66b8314c6d1bbefb65855

                                  SHA512

                                  4a0c5222e03d7d62e21c429897ce27f2a022f4ec8f567eae786dd683b8b5ab3b4069a63aa1c448765cc7067fccf27e45037e24c050b3344e2b260adfca89656a

                                • memory/1564-133-0x0000000000400000-0x00000000004A9000-memory.dmp

                                  Filesize

                                  676KB

                                • memory/1564-134-0x00000000023A0000-0x000000000345A000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/1564-132-0x00000000023A0000-0x000000000345A000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/1564-138-0x0000000000400000-0x00000000004A9000-memory.dmp

                                  Filesize

                                  676KB

                                • memory/1564-139-0x00000000023A0000-0x000000000345A000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/2572-140-0x0000000000400000-0x00000000004A9000-memory.dmp

                                  Filesize

                                  676KB

                                • memory/2572-145-0x0000000000400000-0x00000000004A9000-memory.dmp

                                  Filesize

                                  676KB

                                • memory/5044-143-0x0000000002270000-0x000000000332A000-memory.dmp

                                  Filesize

                                  16.7MB

                                • memory/5044-146-0x0000000000400000-0x00000000004A9000-memory.dmp

                                  Filesize

                                  676KB