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Analysis

  • max time kernel
    123s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    28/09/2024, 17:51

General

  • Target

    4620110c6fa76312da5a318307ce575fedad06905e92d8c73d82eff36b1aa573N.exe

  • Size

    418KB

  • MD5

    7d1925b1756e40c8dfc7fb12d6a45a80

  • SHA1

    bc6475b8fca78dbdbf6aacad15a48628e4834b2b

  • SHA256

    4620110c6fa76312da5a318307ce575fedad06905e92d8c73d82eff36b1aa573

  • SHA512

    a8a558c8ca75f0db837013fd8c132a851a6e8b9214fbe1631263290019c937389936e6ddb17b10f4290736ea51af685333c3da99bba1eb1ed77b26dfbdeb1f78

  • SSDEEP

    6144:sz8wzPQpp00RQH2Td03QelhcBxKdA9EMgCCZnljS/SmMyrlC03gy8:sm02rB03QeUBxKKkCCZnljS/SmM2d8

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 3 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
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 18 IoCs
  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • Installs/modifies Browser Helper Object 2 TTPs 6 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops autorun.inf file 1 TTPs 2 IoCs

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

  • Drops file in System32 directory 9 IoCs
  • UPX packed file 21 IoCs

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

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 30 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1052
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
        PID:1072
      • C:\Windows\Explorer.EXE
        C:\Windows\Explorer.EXE
        1⤵
          PID:1148
          • C:\Users\Admin\AppData\Local\Temp\4620110c6fa76312da5a318307ce575fedad06905e92d8c73d82eff36b1aa573N.exe
            "C:\Users\Admin\AppData\Local\Temp\4620110c6fa76312da5a318307ce575fedad06905e92d8c73d82eff36b1aa573N.exe"
            2⤵
            • Modifies firewall policy service
            • UAC bypass
            • Windows security bypass
            • Loads dropped DLL
            • Windows security modification
            • Checks whether UAC is enabled
            • Enumerates connected drives
            • Installs/modifies Browser Helper Object
            • Drops autorun.inf file
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            • System policy modification
            PID:2100
            • C:\Windows\system32\regsvr32.exe
              "C:\Windows\system32\regsvr32.exe" /s /u "C:\Windows\system32\TBHelper.dll"
              3⤵
                PID:2632
              • C:\Windows\system32\regsvr32.exe
                "C:\Windows\system32\regsvr32.exe" /s "C:\Windows\system32\TBHelper.dll"
                3⤵
                • Loads dropped DLL
                • Installs/modifies Browser Helper Object
                • Modifies registry class
                PID:2808
              • C:\Windows\SysWOW64\ShellU.exe
                "C:\Windows\system32\ShellU.exe"
                3⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:2828
                • C:\Windows\SysWOW64\ShellU.exe
                  C:\Windows\SysWOW64\ShellU.exe
                  4⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:2296
                  • C:\Windows\SysWOW64\ShellU.exe
                    "C:\Windows\SysWOW64\ShellU.exe"
                    5⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2664
                • C:\Windows\SysWOW64\ShellU.exe
                  C:\Windows\SysWOW64\ShellU.exe
                  4⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  • System Location Discovery: System Language Discovery
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of WriteProcessMemory
                  PID:2300
                  • C:\Windows\SysWOW64\ShellU.exe
                    "C:\Windows\SysWOW64\ShellU.exe"
                    5⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    PID:2180
          • C:\Windows\system32\DllHost.exe
            C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
            1⤵
              PID:1956

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Windows\system32\TBHelper.dll

              Filesize

              297KB

              MD5

              344cdaeb8fa48731e9b2acb6d13c7f1b

              SHA1

              37a811539850ce0af346f24215d3173b7d508c7f

              SHA256

              09c03696aed8d632892d2ea89f7e310a9301300e58875a57f274ba09874d067d

              SHA512

              529dac91bdf62e24ee5c351317a91d5d47266cede97736c9b39763e83de542287d8b474b1b2bdc9d1f311f128fcdc8e3d20834f51183821e7a39be0a6e2cfad6

            • F:\korw.exe

              Filesize

              97KB

              MD5

              5799340fb2f7de376f78a29a3726c56d

              SHA1

              24b13fdab733217347abff1f091fc5af33ebb499

              SHA256

              64be824c4ecb78d5f25ef5b92c0044e68ddc547fda5a870b0b73f099d5613266

              SHA512

              e71074e76b4a03b34a8990eb046b0650821591a6539a59f702fc5678c8b58c1d55e69c2d2a3312bc3f048eb38a7c4f8a9ed9d4542bd11d61b815bf1f0d32fe9c

            • \Users\Admin\AppData\Local\Temp\nsjD819.tmp\System.dll

              Filesize

              11KB

              MD5

              fcecbb81e319b0543d333648de1df583

              SHA1

              1f45ac86d969f444795d47f3c9a6eaab34746fc2

              SHA256

              52d241cd84a88f5ade748811777295a64cc39f99d062199e6e63a062451c74f5

              SHA512

              0cb5bf376de7740f3932f7601893318937fd8e5c0159eb1dc7face177728f12973b86de5cee73840e4e6614f61b6666ef5f5c940669a23619f8ca619013d3ce8

            • \Windows\SysWOW64\ShellU.exe

              Filesize

              36KB

              MD5

              8b9778d3c1cddc895d2ed4b02737cb4b

              SHA1

              689706c64b1c39268baa28581f99381caf918c79

              SHA256

              c5a359ba43fe6ac439b58d94c7eccb05c47a6dcd3a399f53e0b4cd1cfc27a3d2

              SHA512

              e19f6e67e7f951be9c06c13ab0d8794271edd22e5f8deefc4e969b9e9bd54382fc50219872106814e815120b1807ec05221b4502330ac6401781acc9039bed02

            • \Windows\SysWOW64\TBHelper.dll

              Filesize

              249KB

              MD5

              b10b9ca0f231bccf358a8055754ac92a

              SHA1

              aeba1f17aa4f46e2be3dee27bce6e3f992b7652d

              SHA256

              508fc9bb10b4363fe8d1d3ae53e446c8cd458b443f1868a59e3617c76d768e52

              SHA512

              402ee623d7c09b16f720c705a949108b67e4f5165bf8ec33f8acc96a95b42d5cf1926b610535e86b91c9ae0b8b6a4c8abb741e881395e542bfa0399d9bc29874

            • memory/1052-27-0x00000000001B0000-0x00000000001B2000-memory.dmp

              Filesize

              8KB

            • memory/2100-18-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-78-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-17-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-20-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-0-0x0000000000400000-0x0000000000520000-memory.dmp

              Filesize

              1.1MB

            • memory/2100-39-0x0000000000690000-0x0000000000691000-memory.dmp

              Filesize

              4KB

            • memory/2100-37-0x0000000000690000-0x0000000000691000-memory.dmp

              Filesize

              4KB

            • memory/2100-36-0x0000000000670000-0x0000000000672000-memory.dmp

              Filesize

              8KB

            • memory/2100-21-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-19-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-80-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-13-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-15-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-14-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-69-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-11-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-43-0x0000000000670000-0x0000000000672000-memory.dmp

              Filesize

              8KB

            • memory/2100-90-0x0000000000670000-0x0000000000672000-memory.dmp

              Filesize

              8KB

            • memory/2100-16-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-79-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-82-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-83-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-85-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-84-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-87-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-89-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-68-0x0000000002530000-0x00000000035EA000-memory.dmp

              Filesize

              16.7MB

            • memory/2100-220-0x0000000000520000-0x0000000000640000-memory.dmp

              Filesize

              1.1MB

            • memory/2100-219-0x0000000000400000-0x0000000000520000-memory.dmp

              Filesize

              1.1MB

            • memory/2100-1-0x0000000000520000-0x0000000000640000-memory.dmp

              Filesize

              1.1MB

            • memory/2180-111-0x0000000000130000-0x0000000000131000-memory.dmp

              Filesize

              4KB

            • memory/2180-112-0x0000000000120000-0x0000000000122000-memory.dmp

              Filesize

              8KB

            • memory/2828-104-0x0000000000130000-0x0000000000131000-memory.dmp

              Filesize

              4KB

            • memory/2828-108-0x0000000000120000-0x0000000000122000-memory.dmp

              Filesize

              8KB