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Analysis

  • max time kernel
    133s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2024, 13:46

General

  • Target

    b2478cd5f3aed2b56783ea96127f32ee.exe

  • Size

    413KB

  • MD5

    b2478cd5f3aed2b56783ea96127f32ee

  • SHA1

    15033a7c206df8dd6bd2dd5a25d94a55a1fc746c

  • SHA256

    852ee7dbfabef158cfe8e07c9a04191b7947f31256b25380074b1a6d7ecefe81

  • SHA512

    c6e86f02f9b432181bfdf9888dc251f8f4eae3da0faa38e8c17a9eb5b5ace5d26847bf4b95f087c1741525cec282fa36c986753f32dc657edceeca83b44cfe40

  • SSDEEP

    6144:n7/7Wn2iBqScSkltGne4D64jdMcmR5HYfEsq4DKxZtmCmUbLZOTvoU:n7TykFILjdbmR54csq4DK/tOTwU

Score
10/10

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Modifies Installed Components in the registry 2 TTPs 30 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 9 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 52 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2478cd5f3aed2b56783ea96127f32ee.exe
    "C:\Users\Admin\AppData\Local\Temp\b2478cd5f3aed2b56783ea96127f32ee.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 872
      2⤵
      • Program crash
      PID:808
    • C:\ProgramData\bH16411KoChP16411\bH16411KoChP16411.exe
      "C:\ProgramData\bH16411KoChP16411\bH16411KoChP16411.exe" "C:\Users\Admin\AppData\Local\Temp\b2478cd5f3aed2b56783ea96127f32ee.exe"
      2⤵
      • Modifies security service
      • Deletes itself
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:2932
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2932 -s 852
        3⤵
        • Program crash
        PID:452
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4692 -ip 4692
    1⤵
      PID:1036
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2932 -ip 2932
      1⤵
        PID:3956
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of FindShellTrayWindow
        PID:4560
      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
        1⤵
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        PID:1544
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of FindShellTrayWindow
        PID:2344
      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
        1⤵
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        PID:2164
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1992
        • C:\Windows\explorer.exe
          explorer.exe /LOADSAVEDWINDOWS
          2⤵
          • Modifies Installed Components in the registry
          • Modifies registry class
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:1808
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:2740
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
          • Suspicious use of FindShellTrayWindow
          PID:4492
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:5092
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:4960
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:4872
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:1092
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:4068
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:960
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:3620
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:2988
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            • Suspicious use of FindShellTrayWindow
            PID:3056
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:4320
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3200
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:4024
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:1600
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3728
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3116
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:1268
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3112
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:4716
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            PID:3604
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:1448
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:4044
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:1496
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3684
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:792
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3212
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3788
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            PID:5060
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:3520
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            • Modifies registry class
            PID:4244
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
            • Modifies Installed Components in the registry
            PID:1588
          • C:\Windows\explorer.exe
            explorer.exe
            1⤵
              PID:3412
            • C:\Windows\explorer.exe
              explorer.exe
              1⤵
                PID:3456
              • C:\Windows\explorer.exe
                explorer.exe
                1⤵
                  PID:2504
                • C:\Windows\explorer.exe
                  explorer.exe
                  1⤵
                    PID:2064
                  • C:\Windows\explorer.exe
                    explorer.exe
                    1⤵
                      PID:4960
                    • C:\Windows\explorer.exe
                      explorer.exe
                      1⤵
                        PID:3880
                      • C:\Windows\explorer.exe
                        explorer.exe
                        1⤵
                          PID:392
                        • C:\Windows\explorer.exe
                          explorer.exe
                          1⤵
                            PID:112
                          • C:\Windows\explorer.exe
                            explorer.exe
                            1⤵
                              PID:2476
                            • C:\Windows\explorer.exe
                              explorer.exe
                              1⤵
                                PID:3240
                              • C:\Windows\explorer.exe
                                explorer.exe
                                1⤵
                                  PID:3032
                                • C:\Windows\explorer.exe
                                  explorer.exe
                                  1⤵
                                    PID:4032
                                  • C:\Windows\explorer.exe
                                    explorer.exe
                                    1⤵
                                      PID:1848
                                    • C:\Windows\explorer.exe
                                      explorer.exe
                                      1⤵
                                        PID:3296
                                      • C:\Windows\explorer.exe
                                        explorer.exe
                                        1⤵
                                          PID:4184
                                        • C:\Windows\explorer.exe
                                          explorer.exe
                                          1⤵
                                            PID:3792
                                          • C:\Windows\explorer.exe
                                            explorer.exe
                                            1⤵
                                              PID:2164
                                            • C:\Windows\explorer.exe
                                              explorer.exe
                                              1⤵
                                                PID:2140
                                              • C:\Windows\explorer.exe
                                                explorer.exe
                                                1⤵
                                                  PID:4428
                                                • C:\Windows\explorer.exe
                                                  explorer.exe
                                                  1⤵
                                                    PID:2408
                                                  • C:\Windows\explorer.exe
                                                    explorer.exe
                                                    1⤵
                                                      PID:3068

                                                    Network

                                                    MITRE ATT&CK Enterprise v15

                                                    Replay Monitor

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                                                    Downloads

                                                    • C:\ProgramData\bH16411KoChP16411\bH16411KoChP16411.exe

                                                      Filesize

                                                      413KB

                                                      MD5

                                                      43e7c1369f52a8b711d308d7b1b9a358

                                                      SHA1

                                                      e2b4ba9b3d13fdc6a1b5bd12ed7c02df26ed85f3

                                                      SHA256

                                                      38ba40d55ea3c1e2590e8dab03ce2e3d2d81bfe69da824e454b68f2ed921a1dd

                                                      SHA512

                                                      3a4b4c12e9f08ccecf0ea9f27a0e306a29e661fc519b0635de1c2315e65f68b5cc884153bf578818b376ba166d1cb72cc928b386464149cc91825f0206d52395

                                                    • memory/2932-21-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/2932-27-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/2932-34-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/2932-35-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/2932-36-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/2932-37-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/4692-0-0x0000000000650000-0x0000000000653000-memory.dmp

                                                      Filesize

                                                      12KB

                                                    • memory/4692-1-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/4692-10-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB

                                                    • memory/4692-19-0x0000000000400000-0x00000000004D2000-memory.dmp

                                                      Filesize

                                                      840KB