Analysis

  • max time kernel
    149s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2022 22:02

General

  • Target

    abe5f67ea2f5d5ec3f34d9a5b79478a8d208fff60730cfc27d4d0789129f4c6c.exe

  • Size

    624KB

  • MD5

    6fe0cf212a37e4e1c85b230662f2d39e

  • SHA1

    b014530384159521949e8245597a0c90a36b0a4a

  • SHA256

    abe5f67ea2f5d5ec3f34d9a5b79478a8d208fff60730cfc27d4d0789129f4c6c

  • SHA512

    26f03bcb2079370a3d9d4866bd7f8bc1eb995dbff1c91a238f56d22c594010101ab6aabe35777972a975e0c1b9c42ad3a4ad56dfd4fcd091c9004a1a28f8318b

  • SSDEEP

    12288:R9YRw4DJLnJPM+moa2oeAF9T7HH3EXlvd8jVgBG4pB3rHRjev6VE:R9H4DxnFtmKoe2dH0lSjIrHS

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 11 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 5 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 50 IoCs
  • Drops file in Windows directory 3 IoCs
  • Modifies registry class 46 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\abe5f67ea2f5d5ec3f34d9a5b79478a8d208fff60730cfc27d4d0789129f4c6c.exe
    "C:\Users\Admin\AppData\Local\Temp\abe5f67ea2f5d5ec3f34d9a5b79478a8d208fff60730cfc27d4d0789129f4c6c.exe"
    1⤵
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\mbf1.dll"
      2⤵
        PID:1052
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\qba8.dll"
        2⤵
          PID:1204
        • C:\Windows\SysWOW64\regsvr32.exe
          C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\8qba.dll"
          2⤵
            PID:1156
          • C:\Windows\SysWOW64\regsvr32.exe
            C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\aj34.dll"
            2⤵
              PID:904
            • C:\Windows\SysWOW64\regsvr32.exe
              C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\a3e1.dll"
              2⤵
                PID:944
              • C:\Windows\SysWOW64\regsvr32.exe
                C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\a3e1.dll"
                2⤵
                  PID:940
                • C:\Windows\SysWOW64\regsvr32.exe
                  C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\fs34.dll"
                  2⤵
                    PID:956
                  • C:\Windows\SysWOW64\regsvr32.exe
                    C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\blbf.dll"
                    2⤵
                      PID:1736
                    • C:\Windows\SysWOW64\regsvr32.exe
                      C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\3ha1.dll"
                      2⤵
                        PID:552
                      • C:\Windows\SysWOW64\regsvr32.exe
                        C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\1v81.dll"
                        2⤵
                          PID:948
                        • C:\Windows\SysWOW64\regsvr32.exe
                          C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\aqab.dll"
                          2⤵
                            PID:1980
                          • C:\Windows\SysWOW64\regsvr32.exe
                            C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\bg4f.dll"
                            2⤵
                              PID:1688
                            • C:\Windows\SysWOW64\regsvr32.exe
                              C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32\4g1a.dll"
                              2⤵
                                PID:1776
                              • C:\Windows\SysWOW64\regsvr32.exe
                                C:\Windows\system32\regsvr32.exe /s "C:\Windows\system32\4g1a.dll"
                                2⤵
                                • Loads dropped DLL
                                • Installs/modifies Browser Helper Object
                                • Modifies registry class
                                PID:1820
                              • C:\Windows\SysWOW64\1m4b.exe
                                C:\Windows\system32\1m4b.exe -i
                                2⤵
                                • Executes dropped EXE
                                • Writes to the Master Boot Record (MBR)
                                PID:1796
                              • C:\Windows\SysWOW64\1m4b.exe
                                C:\Windows\system32\1m4b.exe -s
                                2⤵
                                • Executes dropped EXE
                                • Writes to the Master Boot Record (MBR)
                                PID:1744
                            • C:\Windows\SysWOW64\1m4b.exe
                              C:\Windows\SysWOW64\1m4b.exe
                              1⤵
                              • Drops file in Drivers directory
                              • Executes dropped EXE
                              • Loads dropped DLL
                              • Writes to the Master Boot Record (MBR)
                              • Suspicious behavior: EnumeratesProcesses
                              PID:1696
                              • C:\Windows\SysWOW64\rundll32.exe
                                C:\Windows\system32\rundll32 C:\Windows\system32\3blf.dll, Always
                                2⤵
                                • Loads dropped DLL
                                • Writes to the Master Boot Record (MBR)
                                • Drops file in System32 directory
                                PID:1196

                            Network

                            MITRE ATT&CK Matrix ATT&CK v6

                            Persistence

                            Browser Extensions

                            1
                            T1176

                            Bootkit

                            1
                            T1067

                            Defense Evasion

                            Modify Registry

                            1
                            T1112

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • C:\Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • C:\Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • C:\Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • C:\Windows\SysWOW64\3blf.dll
                              Filesize

                              536KB

                              MD5

                              fc47dd6b070cc2537850bcb19e3fddc7

                              SHA1

                              98952641465316b6e43777ab35d9a4c07ace7b2e

                              SHA256

                              df4e64253f2818c33cbeff91b59d0461facae1546f82d01a1e30eab5e2a1df5d

                              SHA512

                              9b0150bf8983fe6dc83b527bbdf9b23f3eea51612e4899365804e1a8c2babdbee37f359c5635f54fb3bff63e5cc730c1bcc18b05ea06100b0350ebf9bc5f7484

                            • C:\Windows\SysWOW64\4g1a.dll
                              Filesize

                              64KB

                              MD5

                              c1f82f029810a10173163063443cd7cd

                              SHA1

                              9634dae3c226c21a1503fc92a3f1c288ad7cb3af

                              SHA256

                              716189df2400c88824513d07e723d6856fd033bac160758378b9f008f8a2a8e3

                              SHA512

                              bda5ad15518aa339855c0f88688cd784e7a113cd9466b02c7d7143022ebf243e58402cc900da2bccff2bf37cf61436542ab2ead450bcdafa75cf77b1f53d150a

                            • \Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • \Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • \Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • \Windows\SysWOW64\1m4b.exe
                              Filesize

                              116KB

                              MD5

                              0477a0485c1b3ce2f015a093888e9581

                              SHA1

                              e7b72e042e6f754f6235fc1b7d7ff75faca95159

                              SHA256

                              58f1951587a66fe281060fed2c984513a39d0dfe395ead7b620fc4a2e17248ff

                              SHA512

                              6fe68245126658813123bd62f9cc373243dc657b94d251826c12315851c39dc6b84b65c9331021e1d6b4754e9699d9b14e887aec52fddb02ec574b055d9fbf42

                            • \Windows\SysWOW64\3blf.dll
                              Filesize

                              536KB

                              MD5

                              fc47dd6b070cc2537850bcb19e3fddc7

                              SHA1

                              98952641465316b6e43777ab35d9a4c07ace7b2e

                              SHA256

                              df4e64253f2818c33cbeff91b59d0461facae1546f82d01a1e30eab5e2a1df5d

                              SHA512

                              9b0150bf8983fe6dc83b527bbdf9b23f3eea51612e4899365804e1a8c2babdbee37f359c5635f54fb3bff63e5cc730c1bcc18b05ea06100b0350ebf9bc5f7484

                            • \Windows\SysWOW64\3blf.dll
                              Filesize

                              536KB

                              MD5

                              fc47dd6b070cc2537850bcb19e3fddc7

                              SHA1

                              98952641465316b6e43777ab35d9a4c07ace7b2e

                              SHA256

                              df4e64253f2818c33cbeff91b59d0461facae1546f82d01a1e30eab5e2a1df5d

                              SHA512

                              9b0150bf8983fe6dc83b527bbdf9b23f3eea51612e4899365804e1a8c2babdbee37f359c5635f54fb3bff63e5cc730c1bcc18b05ea06100b0350ebf9bc5f7484

                            • \Windows\SysWOW64\3blf.dll
                              Filesize

                              536KB

                              MD5

                              fc47dd6b070cc2537850bcb19e3fddc7

                              SHA1

                              98952641465316b6e43777ab35d9a4c07ace7b2e

                              SHA256

                              df4e64253f2818c33cbeff91b59d0461facae1546f82d01a1e30eab5e2a1df5d

                              SHA512

                              9b0150bf8983fe6dc83b527bbdf9b23f3eea51612e4899365804e1a8c2babdbee37f359c5635f54fb3bff63e5cc730c1bcc18b05ea06100b0350ebf9bc5f7484

                            • \Windows\SysWOW64\3blf.dll
                              Filesize

                              536KB

                              MD5

                              fc47dd6b070cc2537850bcb19e3fddc7

                              SHA1

                              98952641465316b6e43777ab35d9a4c07ace7b2e

                              SHA256

                              df4e64253f2818c33cbeff91b59d0461facae1546f82d01a1e30eab5e2a1df5d

                              SHA512

                              9b0150bf8983fe6dc83b527bbdf9b23f3eea51612e4899365804e1a8c2babdbee37f359c5635f54fb3bff63e5cc730c1bcc18b05ea06100b0350ebf9bc5f7484

                            • \Windows\SysWOW64\4g1a.dll
                              Filesize

                              64KB

                              MD5

                              c1f82f029810a10173163063443cd7cd

                              SHA1

                              9634dae3c226c21a1503fc92a3f1c288ad7cb3af

                              SHA256

                              716189df2400c88824513d07e723d6856fd033bac160758378b9f008f8a2a8e3

                              SHA512

                              bda5ad15518aa339855c0f88688cd784e7a113cd9466b02c7d7143022ebf243e58402cc900da2bccff2bf37cf61436542ab2ead450bcdafa75cf77b1f53d150a

                            • \Windows\SysWOW64\4g1a.dll
                              Filesize

                              64KB

                              MD5

                              c1f82f029810a10173163063443cd7cd

                              SHA1

                              9634dae3c226c21a1503fc92a3f1c288ad7cb3af

                              SHA256

                              716189df2400c88824513d07e723d6856fd033bac160758378b9f008f8a2a8e3

                              SHA512

                              bda5ad15518aa339855c0f88688cd784e7a113cd9466b02c7d7143022ebf243e58402cc900da2bccff2bf37cf61436542ab2ead450bcdafa75cf77b1f53d150a

                            • \Windows\SysWOW64\4g1a.dll
                              Filesize

                              64KB

                              MD5

                              c1f82f029810a10173163063443cd7cd

                              SHA1

                              9634dae3c226c21a1503fc92a3f1c288ad7cb3af

                              SHA256

                              716189df2400c88824513d07e723d6856fd033bac160758378b9f008f8a2a8e3

                              SHA512

                              bda5ad15518aa339855c0f88688cd784e7a113cd9466b02c7d7143022ebf243e58402cc900da2bccff2bf37cf61436542ab2ead450bcdafa75cf77b1f53d150a

                            • memory/552-71-0x0000000000000000-mapping.dmp
                            • memory/904-61-0x0000000000000000-mapping.dmp
                            • memory/940-65-0x0000000000000000-mapping.dmp
                            • memory/944-63-0x0000000000000000-mapping.dmp
                            • memory/948-73-0x0000000000000000-mapping.dmp
                            • memory/956-67-0x0000000000000000-mapping.dmp
                            • memory/1052-55-0x0000000000000000-mapping.dmp
                            • memory/1156-59-0x0000000000000000-mapping.dmp
                            • memory/1196-103-0x0000000000000000-mapping.dmp
                            • memory/1204-57-0x0000000000000000-mapping.dmp
                            • memory/1688-77-0x0000000000000000-mapping.dmp
                            • memory/1736-69-0x0000000000000000-mapping.dmp
                            • memory/1744-93-0x0000000000000000-mapping.dmp
                            • memory/1776-79-0x0000000000000000-mapping.dmp
                            • memory/1796-87-0x0000000000000000-mapping.dmp
                            • memory/1820-81-0x0000000000000000-mapping.dmp
                            • memory/1980-75-0x0000000000000000-mapping.dmp
                            • memory/2036-54-0x0000000076151000-0x0000000076153000-memory.dmp
                              Filesize

                              8KB