Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2024, 20:25

General

  • Target

    b81a9539a59fa863d413405637988a9c.exe

  • Size

    1.5MB

  • MD5

    b81a9539a59fa863d413405637988a9c

  • SHA1

    aa4e942633e8f441cf480fa2d6006b2587e56138

  • SHA256

    3610fbc3151b2824dcbca7d110100ed0459fff27dd693292a405b43c331d7fdf

  • SHA512

    24bfdd611099d45050ad4f966dc6b44ca7fea15e1b35e3937b3a2170b7d9d2caa218ba4eae40f7d29ae37bef8bdf55f3e7799e741db4dfa7bc1e09494849f471

  • SSDEEP

    24576:Grr0V7m3w3LVtCPrYF9cjukL2r1R4c0buHXTnuesv5scjukL2Y:Grr0lkCLVwMF9cakL21R4c0a3Tnues5T

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 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 17 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\b81a9539a59fa863d413405637988a9c.exe
    "C:\Users\Admin\AppData\Local\Temp\b81a9539a59fa863d413405637988a9c.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\b81a9539a59fa863d413405637988a9c.exe
      C:\Users\Admin\AppData\Local\Temp\b81a9539a59fa863d413405637988a9c.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:464
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\b81a9539a59fa863d413405637988a9c.exe" /TN EvIYV7rY9c10 /F
        3⤵
        • Creates scheduled task(s)
        PID:2696
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN EvIYV7rY9c10 > C:\Users\Admin\AppData\Local\Temp\Yh6wZ.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2036
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN EvIYV7rY9c10
          4⤵
            PID:3844
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 612
          3⤵
          • Program crash
          PID:2496
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 648
          3⤵
          • Program crash
          PID:4004
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 656
          3⤵
          • Program crash
          PID:804
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 736
          3⤵
          • Program crash
          PID:4288
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 756
          3⤵
          • Program crash
          PID:3020
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 764
          3⤵
          • Program crash
          PID:2900
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1472
          3⤵
          • Program crash
          PID:2044
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1912
          3⤵
          • Program crash
          PID:3848
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 2144
          3⤵
          • Program crash
          PID:948
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1960
          3⤵
          • Program crash
          PID:4112
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 2104
          3⤵
          • Program crash
          PID:4592
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1988
          3⤵
          • Program crash
          PID:2676
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1992
          3⤵
          • Program crash
          PID:3668
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1984
          3⤵
          • Program crash
          PID:4340
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1988
          3⤵
          • Program crash
          PID:1496
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 2152
          3⤵
          • Program crash
          PID:4792
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 648
          3⤵
          • Program crash
          PID:1824
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 464 -ip 464
      1⤵
        PID:5040
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 464 -ip 464
        1⤵
          PID:2020
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 464 -ip 464
          1⤵
            PID:4164
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 464 -ip 464
            1⤵
              PID:2292
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 464 -ip 464
              1⤵
                PID:1672
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 464 -ip 464
                1⤵
                  PID:4264
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 464 -ip 464
                  1⤵
                    PID:3908
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 464 -ip 464
                    1⤵
                      PID:432
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 464 -ip 464
                      1⤵
                        PID:1012
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 464 -ip 464
                        1⤵
                          PID:3360
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 464 -ip 464
                          1⤵
                            PID:4948
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 464 -ip 464
                            1⤵
                              PID:5100
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 464 -ip 464
                              1⤵
                                PID:2368
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 464 -ip 464
                                1⤵
                                  PID:2916
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 464 -ip 464
                                  1⤵
                                    PID:2396
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 464 -ip 464
                                    1⤵
                                      PID:4008
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 624 -p 464 -ip 464
                                      1⤵
                                        PID:1012

                                      Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Temp\Yh6wZ.xml

                                        Filesize

                                        1KB

                                        MD5

                                        ec3660405fa4f3d542f306fc468e9d6c

                                        SHA1

                                        573c8fb14f52c0d4421275d1989303c6d003924b

                                        SHA256

                                        4f31e22f513d35aa318e360f62a20e187aa897102ee7b65bcb1692b050f70e5c

                                        SHA512

                                        1f65ed0d7b5d2add080935f9fcfc2b6d724124f918ae11c28a1a3c22b133f950a46e291a36060b95f9af4b1762edf72bf4662e3d88f76c11fcbb97cc0ea9245a

                                      • C:\Users\Admin\AppData\Local\Temp\b81a9539a59fa863d413405637988a9c.exe

                                        Filesize

                                        1.5MB

                                        MD5

                                        fede309bffa5978d1e9e373b65730d21

                                        SHA1

                                        da74d1babf2f9d1efedacad28d1d4f44262cd8af

                                        SHA256

                                        c90bcbff77cc6a7a6f05120a704428cad91ed46cf329e3c51ab4f9e317403a85

                                        SHA512

                                        6f6af2d4541b0f90ef6af9eb2aaed4ed5d6612a05f4917e6c751d6ca79b2808db94dc0c6dbdec68e681dcce60a18291a417dd939e280123644ec1192407259c0

                                      • memory/464-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                        Filesize

                                        2.4MB

                                      • memory/464-17-0x0000000001730000-0x00000000017AE000-memory.dmp

                                        Filesize

                                        504KB

                                      • memory/464-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                        Filesize

                                        428KB

                                      • memory/464-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                        Filesize

                                        364KB

                                      • memory/464-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                        Filesize

                                        2.4MB

                                      • memory/1724-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                        Filesize

                                        2.4MB

                                      • memory/1724-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                        Filesize

                                        428KB

                                      • memory/1724-4-0x0000000025030000-0x00000000250AE000-memory.dmp

                                        Filesize

                                        504KB

                                      • memory/1724-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                        Filesize

                                        428KB