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Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2024, 17:44

General

  • Target

    8fc4781c04969c865406ed1a7c510ad1.exe

  • Size

    3.2MB

  • MD5

    8fc4781c04969c865406ed1a7c510ad1

  • SHA1

    e4b8a6777d9a6e37daa288f01a952c7dec7d54d6

  • SHA256

    5a4212d60dc43e33e81a2366fd1f3661f8ce7dc2be493a6cf448972fef895b15

  • SHA512

    43864350c8b6adcc481209b26b48a8970413ea6df6477cf8e0c61453e61f0fe7c0d9046c6cef8f7686624bbe471ffd3f61d61d7135e6061524cf2d996d00d1b7

  • SSDEEP

    98304:zIOAcakc4VHpNBQcakc2zolHIHfcakc4VHpNBQcakcO:zIDdl4Pkdluolo/dl4PkdlO

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Program crash 18 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8fc4781c04969c865406ed1a7c510ad1.exe
    "C:\Users\Admin\AppData\Local\Temp\8fc4781c04969c865406ed1a7c510ad1.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:64
    • C:\Users\Admin\AppData\Local\Temp\8fc4781c04969c865406ed1a7c510ad1.exe
      C:\Users\Admin\AppData\Local\Temp\8fc4781c04969c865406ed1a7c510ad1.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:4640
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\8fc4781c04969c865406ed1a7c510ad1.exe" /TN 91YuFL8m6860 /F
        3⤵
        • Creates scheduled task(s)
        PID:3952
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN 91YuFL8m6860 > C:\Users\Admin\AppData\Local\Temp\0nz0huY.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:624
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN 91YuFL8m6860
          4⤵
            PID:1908
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 616
          3⤵
          • Program crash
          PID:1700
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 656
          3⤵
          • Program crash
          PID:1996
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 724
          3⤵
          • Program crash
          PID:3848
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 716
          3⤵
          • Program crash
          PID:1164
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 716
          3⤵
          • Program crash
          PID:2668
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 756
          3⤵
          • Program crash
          PID:3128
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1472
          3⤵
          • Program crash
          PID:1060
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1916
          3⤵
          • Program crash
          PID:1540
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 2144
          3⤵
          • Program crash
          PID:312
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1876
          3⤵
          • Program crash
          PID:4524
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1920
          3⤵
          • Program crash
          PID:1032
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1964
          3⤵
          • Program crash
          PID:2848
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1876
          3⤵
          • Program crash
          PID:344
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1924
          3⤵
          • Program crash
          PID:1516
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 2108
          3⤵
          • Program crash
          PID:4332
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 1876
          3⤵
          • Program crash
          PID:1384
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 2156
          3⤵
          • Program crash
          PID:1076
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4640 -s 720
          3⤵
          • Program crash
          PID:1228
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4640 -ip 4640
      1⤵
        PID:2936
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4640 -ip 4640
        1⤵
          PID:2236
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4640 -ip 4640
          1⤵
            PID:3596
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4640 -ip 4640
            1⤵
              PID:2216
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4640 -ip 4640
              1⤵
                PID:2056
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4640 -ip 4640
                1⤵
                  PID:3508
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4640 -ip 4640
                  1⤵
                    PID:4968
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4640 -ip 4640
                    1⤵
                      PID:3368
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4640 -ip 4640
                      1⤵
                        PID:908
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4640 -ip 4640
                        1⤵
                          PID:2252
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4640 -ip 4640
                          1⤵
                            PID:4540
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4640 -ip 4640
                            1⤵
                              PID:4948
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4640 -ip 4640
                              1⤵
                                PID:1040
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4640 -ip 4640
                                1⤵
                                  PID:4424
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4640 -ip 4640
                                  1⤵
                                    PID:1928
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4640 -ip 4640
                                    1⤵
                                      PID:4820
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4640 -ip 4640
                                      1⤵
                                        PID:1996
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4640 -ip 4640
                                        1⤵
                                          PID:1428

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\0nz0huY.xml

                                          Filesize

                                          1KB

                                          MD5

                                          0736ba2ab9a149f29b67080f286b82ac

                                          SHA1

                                          80f08756d4c679b824baae55ed1e206d32862b01

                                          SHA256

                                          21f55f07b7b0e088ecd4c2b0287053a0d54af1dc42b9ad202723768971d6a14e

                                          SHA512

                                          1dc2826c7f416946b83c5b2276cd53e27535086f1d8946601447a1209da89ef94ec0a658683be8a7e4e3641938b8949266207fe40702ef76963d0c647513d868

                                        • C:\Users\Admin\AppData\Local\Temp\8fc4781c04969c865406ed1a7c510ad1.exe

                                          Filesize

                                          1.7MB

                                          MD5

                                          d6e939fdc3c610abd356aec2204204ef

                                          SHA1

                                          2db075878ffde568a54a22a2aae1f6b036f241a7

                                          SHA256

                                          b9ed0f5d88ddc5e21e2225263fd607aa3ffe4bfc05ad61098e20770d36680d01

                                          SHA512

                                          b61c9458da696aa55d287e1e50b643ec60a660831c9f222deec55134d64e1d03d316940bb2dc1ecd5b6ca41e4c3775ca03afceabf8bf73efaf47018e6cf94761

                                        • memory/64-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/64-2-0x00000000018C0000-0x000000000193E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/64-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/64-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4640-15-0x00000000016E0000-0x000000000175E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/4640-18-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/4640-22-0x00000000004B0000-0x000000000051B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4640-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/4640-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB