Resubmissions

02/03/2025, 20:59

250302-zsp6wsvthz 10

02/03/2025, 18:11

250302-ws3kfazzd1 10

Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2025, 18:11

General

  • Target

    stub.exe

  • Size

    231KB

  • MD5

    265b52aa4d100784d7cd39258d5e4d21

  • SHA1

    5b708da62d55364477ffb77e7feb4193f4635f92

  • SHA256

    9d08e5e62b409ef1ccd05c7996eb5432e4a36f55642cb7441d153909e823f144

  • SHA512

    4ce9e2c41b65ce3c108765dcd934e0f2a12f6c9640cb2ae547997b26a66da1d515ea7bfeb9cc529a57fbd41f51d61068ca7b9f551119e1403ff0cf1b5684e661

  • SSDEEP

    3072:AvNYkHFE9jZOjT4LD8KbgVtn8Mo8G1gVziHzZbIK1YKB/pCAcNqXhwBV3yxSQigS:srE9Z/5bTgVziHzZnSKrCbYMJZbe8tq

Malware Config

Extracted

Family

xworm

Version

5.0

C2

217.136.29.82:50007

Attributes
  • install_file

    Mason.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in System32 directory 17 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:420
    • C:\Windows\system32\services.exe
      C:\Windows\system32\services.exe
      1⤵
        PID:476
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k DcomLaunch
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:596
          • C:\Windows\system32\wbem\wmiprvse.exe
            C:\Windows\system32\wbem\wmiprvse.exe
            3⤵
              PID:1736
            • C:\Windows\system32\DllHost.exe
              C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
              3⤵
                PID:288
              • C:\Windows\system32\wbem\wmiprvse.exe
                C:\Windows\system32\wbem\wmiprvse.exe -Embedding
                3⤵
                  PID:2868
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k RPCSS
                2⤵
                  PID:672
                • C:\Windows\System32\svchost.exe
                  C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                  2⤵
                  • Modifies security service
                  PID:748
                • C:\Windows\System32\svchost.exe
                  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                  2⤵
                    PID:808
                    • C:\Windows\system32\Dwm.exe
                      "C:\Windows\system32\Dwm.exe"
                      3⤵
                        PID:1208
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k netsvcs
                      2⤵
                      • Drops file in System32 directory
                      • Suspicious use of AdjustPrivilegeToken
                      PID:844
                      • \\?\C:\Windows\system32\wbem\WMIADAP.EXE
                        wmiadap.exe /F /T /R
                        3⤵
                        • Drops file in System32 directory
                        • Drops file in Windows directory
                        PID:2580
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalService
                      2⤵
                        PID:960
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k NetworkService
                        2⤵
                          PID:112
                        • C:\Windows\System32\spoolsv.exe
                          C:\Windows\System32\spoolsv.exe
                          2⤵
                            PID:1012
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
                            2⤵
                              PID:904
                            • C:\Windows\system32\taskhost.exe
                              "taskhost.exe"
                              2⤵
                                PID:1112
                              • C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE
                                "C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE"
                                2⤵
                                  PID:1616
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
                                  2⤵
                                    PID:2012
                                  • C:\Windows\system32\sppsvc.exe
                                    C:\Windows\system32\sppsvc.exe
                                    2⤵
                                      PID:2296
                                  • C:\Windows\system32\lsass.exe
                                    C:\Windows\system32\lsass.exe
                                    1⤵
                                      PID:492
                                    • C:\Windows\system32\lsm.exe
                                      C:\Windows\system32\lsm.exe
                                      1⤵
                                        PID:500
                                      • C:\Windows\Explorer.EXE
                                        C:\Windows\Explorer.EXE
                                        1⤵
                                          PID:1248
                                          • C:\Users\Admin\AppData\Local\Temp\stub.exe
                                            "C:\Users\Admin\AppData\Local\Temp\stub.exe"
                                            2⤵
                                            • Loads dropped DLL
                                            • Suspicious use of AdjustPrivilegeToken
                                            • Suspicious use of WriteProcessMemory
                                            PID:2688
                                            • C:\Users\Admin\AppData\Local\Temp\thvhxdf3.fbe.exe
                                              "C:\Users\Admin\AppData\Local\Temp\thvhxdf3.fbe.exe"
                                              3⤵
                                              • Executes dropped EXE
                                              • Suspicious behavior: EnumeratesProcesses
                                              • Suspicious use of AdjustPrivilegeToken
                                              • Suspicious use of WriteProcessMemory
                                              PID:2964
                                            • C:\Windows\system32\SCHTASKS.exe
                                              "SCHTASKS.exe" /create /tn "Masonstub.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\stub.exe'" /sc onlogon /rl HIGHEST
                                              3⤵
                                              • Scheduled Task/Job: Scheduled Task
                                              PID:2464
                                            • C:\Windows\system32\SCHTASKS.exe
                                              "SCHTASKS.exe" /create /tn "Masonstub.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\stub.exe'" /sc onlogon /rl HIGHEST
                                              3⤵
                                              • Scheduled Task/Job: Scheduled Task
                                              PID:2208
                                        • C:\Windows\system32\conhost.exe
                                          \??\C:\Windows\system32\conhost.exe "11758408-1744926447-14308599621931545902-148776202827142460-1066725874-991506922"
                                          1⤵
                                            PID:536

                                          Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

                                          Loading Replay Monitor...

                                          Downloads

                                          • C:\Windows\System32\perfc007.dat

                                            Filesize

                                            141KB

                                            MD5

                                            0f3d76321f0a7986b42b25a3aa554f82

                                            SHA1

                                            7036bba62109cc25da5d6a84d22b6edb954987c0

                                            SHA256

                                            dfad62e3372760d303f7337fe290e4cb28e714caadd3c59294b77968d81fe460

                                            SHA512

                                            bb02a3f14d47d233fbda046f61bbf5612ebc6213b156af9c47f56733a03df1bb484d1c3576569eb4499d7b378eb01f4d6e906c36c6f71738482584c2e84b47d0

                                          • C:\Windows\System32\perfc00A.dat

                                            Filesize

                                            150KB

                                            MD5

                                            540138285295c68de32a419b7d9de687

                                            SHA1

                                            1cf6a2a0f53f0516ff9fe5ac733dbb5a9255ae56

                                            SHA256

                                            33867c52f756f2b0f645f4bd503c65969d73676dcb14e6a6fdb2ffb11c7562eb

                                            SHA512

                                            7c17c10d4b6165aa0c208811dc6d98e2f4e75e3da1cc2313cc7da9d657626beb3e4ec00b07b71376a7c549725d40db20d8952753e70acc86e87a8390e224a64a

                                          • C:\Windows\System32\perfc00C.dat

                                            Filesize

                                            141KB

                                            MD5

                                            831dbe568992299e589143ee8898e131

                                            SHA1

                                            737726173aab8b76fe1f98104d72bb91abd273bf

                                            SHA256

                                            4f22ef1625fb2a2370779d0992f80b8e5e5da8dc727aa99ade152044d28e9405

                                            SHA512

                                            39015d29d593c9df59cdafbff95a6ddc000a5dbf767665b65f8ec65751e70315918c93d3583b922d32e9b6261b8c07023da660098ca79c5420b782c150b5c139

                                          • C:\Windows\System32\perfc010.dat

                                            Filesize

                                            138KB

                                            MD5

                                            cf82e7354e591c1408eb2cc0e29dd274

                                            SHA1

                                            7e91bd50c3e6b64b81e2b5c1ce723f52e34748e9

                                            SHA256

                                            59b5e6fbbe68f47db14a3c045b0ac1abb026c626ca4bee708fbd3940e6d2e06d

                                            SHA512

                                            98bd4809c1c418be4100096bc9df328d2ad435c5615c082fa2bfa424935203107015862cd9c1737800b7f7bd020fea4538c325707927c1557bc3efebffb27620

                                          • C:\Windows\System32\perfc011.dat

                                            Filesize

                                            114KB

                                            MD5

                                            1f998386566e5f9b7f11cc79254d1820

                                            SHA1

                                            e1da5fe1f305099b94de565d06bc6f36c6794481

                                            SHA256

                                            1665d97fb8786b94745295feb616a30c27af84e8a5e1d25cd1bcaf70723040ea

                                            SHA512

                                            a7c9702dd5833f4d6d27ce293efb9507948a3b05db350fc9909af6a48bd649c7578f856b4d64d87df451d0efbe202c62da7fffcac03b3fe72c7caaea553de75f

                                          • C:\Windows\System32\perfh007.dat

                                            Filesize

                                            668KB

                                            MD5

                                            5026297c7c445e7f6f705906a6f57c02

                                            SHA1

                                            4ec3b66d44b0d44ec139bd1475afd100748f9e91

                                            SHA256

                                            506d3bec72805973df3b2e11aba4d074aeb4b26b7335536e79ea1145108817cc

                                            SHA512

                                            5be8e51ecacda465b905df3e38ac114240d8fa6bae5bb17e8e53a87630454b57514ca0abbd8afefd798d450cd4ee89caf4391eeb837ced384260c188482fb48d

                                          • C:\Windows\System32\perfh009.dat

                                            Filesize

                                            634KB

                                            MD5

                                            1c678ee06bd02b5d9e4d51c3a4ec2d2b

                                            SHA1

                                            90aa7fdfaaa37fb4f2edfc8efc3994871087dedb

                                            SHA256

                                            2d168ab31836a08d8ca00aab9685f040aac4052a7f10fbbf0c28e9f880a79dd3

                                            SHA512

                                            ec665d7a20f27b2a0fe2475883009c6d34615cc2046d096de447ef57bcac9da0ae842be0556f5736f42d9c1c601fb8629896a2444990e508f7c573165088ab32

                                          • C:\Windows\System32\perfh00A.dat

                                            Filesize

                                            715KB

                                            MD5

                                            340af83514a525c50ffbbf8475ed62b7

                                            SHA1

                                            e2f382ae75afe7df8a323320bbb2aafa1ff6e407

                                            SHA256

                                            fb298e9a90476b4698def395a8ee1974c1cee3959b658662c730da915caea417

                                            SHA512

                                            8236aab579456ef4614ddd5fbfe72d0b0b26617c43a9cd53c3de56d3ac052eee8ca7d70749aaca0692855ecd4fd5f1460ac0b1dd30481dee519b910755c1cc2d

                                          • C:\Windows\System32\perfh00C.dat

                                            Filesize

                                            715KB

                                            MD5

                                            718bb9564980029a2e3341093a4bb082

                                            SHA1

                                            8953d96e47b65c2c70f2bcc3d9e2e7c55d41ee61

                                            SHA256

                                            ad7b5314ef00ce846ae2c91a32dd1c1f2b4905cf182005e251ad6d4af66cc977

                                            SHA512

                                            3f22961d108271dc098ae2c75d217991da38c18a587b44abd74da853ea26d171ca1a507c3200f3b7c2a8175bfff5a8b968a551a4804082064dc6f2ef98b5432d

                                          • C:\Windows\System32\perfh010.dat

                                            Filesize

                                            710KB

                                            MD5

                                            66fd0e1999023d23c9f8e3cd7a92af77

                                            SHA1

                                            e0e61df319ddbc7c9d425612295f825c47888658

                                            SHA256

                                            bdbadcf6f408c6d223974d52a69413aebe1d50ac7eaeacefa2beb2f7321355d0

                                            SHA512

                                            b8924cdf53eb5589820a16890fa7abdca20dfc3ca44063d3fdaef484f506419dbf9cd660bc80e8dfe7b7eba7d9db8fe0046accc1fca8d3faf70dedfa1ee0e68f

                                          • C:\Windows\System32\perfh011.dat

                                            Filesize

                                            394KB

                                            MD5

                                            24da30cbb5f0fe4939862880e72cc32c

                                            SHA1

                                            9132497736f52dae62b79be1677c05e32a7ba2ab

                                            SHA256

                                            a11a4228f8485db2f90466651f6cab07245a8ff5b3448636ab0abc4d618a4a1f

                                            SHA512

                                            332a57e8f0e8d7f82044f90388afd7509768ecb3f657c6be12d1f51ec1c66b8886c30d4b4a42d3a64c3e0d8b76d7cc86a1ac3b92713a68a62c12fdae6a77d6c2

                                          • C:\Windows\System32\wbem\Performance\WmiApRpl.ini

                                            Filesize

                                            27KB

                                            MD5

                                            46d08e3a55f007c523ac64dce6dcf478

                                            SHA1

                                            62edf88697e98d43f32090a2197bead7e7244245

                                            SHA256

                                            5b15b1fc32713447c3fbc952a0fb02f1fd78c6f9ac69087bdb240625b0282614

                                            SHA512

                                            b1f42e70c0ba866a9ed34eb531dbcbae1a659d7349c1e1a14b18b9e23d8cbd302d8509c6d3a28bc7509dd92e83bcb400201fb5d5a70f613421d81fe649d02e42

                                          • \Users\Admin\AppData\Local\Temp\thvhxdf3.fbe.exe

                                            Filesize

                                            161KB

                                            MD5

                                            94f1ab3a068f83b32639579ec9c5d025

                                            SHA1

                                            38f3d5bc5de46feb8de093d11329766b8e2054ae

                                            SHA256

                                            879cc20b41635709bb304e315aaa5ca4708b480a1bfc2f4935fcf2215188efb0

                                            SHA512

                                            44d5236a804d63302b21ca25ebc148a64605508d03c990a244c44ceb8630849da0510b7b2d0bee72e01ca6681e2d86d7e6aee8847674a26f0028d149b9abee0c

                                          • memory/420-23-0x000007FEBE080000-0x000007FEBE090000-memory.dmp

                                            Filesize

                                            64KB

                                          • memory/420-17-0x0000000000B00000-0x0000000000B2B000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/420-86-0x0000000000B00000-0x0000000000B2B000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/420-88-0x00000000773D1000-0x00000000773D2000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/420-15-0x0000000000AD0000-0x0000000000AF5000-memory.dmp

                                            Filesize

                                            148KB

                                          • memory/420-16-0x0000000000AD0000-0x0000000000AF5000-memory.dmp

                                            Filesize

                                            148KB

                                          • memory/420-24-0x00000000373C0000-0x00000000373D0000-memory.dmp

                                            Filesize

                                            64KB

                                          • memory/476-27-0x00000000373C0000-0x00000000373D0000-memory.dmp

                                            Filesize

                                            64KB

                                          • memory/476-26-0x000007FEBE080000-0x000007FEBE090000-memory.dmp

                                            Filesize

                                            64KB

                                          • memory/476-87-0x0000000000C80000-0x0000000000CAB000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/476-21-0x0000000000C80000-0x0000000000CAB000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/492-32-0x00000000373C0000-0x00000000373D0000-memory.dmp

                                            Filesize

                                            64KB

                                          • memory/492-89-0x0000000000160000-0x000000000018B000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/492-30-0x0000000000160000-0x000000000018B000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/492-31-0x000007FEBE080000-0x000007FEBE090000-memory.dmp

                                            Filesize

                                            64KB

                                          • memory/672-138-0x0000000000160000-0x000000000018B000-memory.dmp

                                            Filesize

                                            172KB

                                          • memory/2688-0-0x000007FEF5723000-0x000007FEF5724000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2688-199-0x000000001B430000-0x000000001B4B0000-memory.dmp

                                            Filesize

                                            512KB

                                          • memory/2688-197-0x000007FEF5723000-0x000007FEF5724000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2688-196-0x0000000002160000-0x000000000216E000-memory.dmp

                                            Filesize

                                            56KB

                                          • memory/2688-2-0x0000000000140000-0x000000000016C000-memory.dmp

                                            Filesize

                                            176KB

                                          • memory/2688-1-0x0000000000C10000-0x0000000000C50000-memory.dmp

                                            Filesize

                                            256KB

                                          • memory/2688-334-0x000000001B430000-0x000000001B4B0000-memory.dmp

                                            Filesize

                                            512KB

                                          • memory/2964-198-0x0000000077380000-0x0000000077529000-memory.dmp

                                            Filesize

                                            1.7MB

                                          • memory/2964-14-0x0000000077380000-0x0000000077529000-memory.dmp

                                            Filesize

                                            1.7MB

                                          • memory/2964-13-0x0000000077381000-0x0000000077482000-memory.dmp

                                            Filesize

                                            1.0MB

                                          • memory/2964-12-0x0000000077160000-0x000000007727F000-memory.dmp

                                            Filesize

                                            1.1MB

                                          • memory/2964-11-0x0000000077380000-0x0000000077529000-memory.dmp

                                            Filesize

                                            1.7MB