Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/01/2024, 03:42

General

  • Target

    3fce4a409fab35200322d06735aba8e3.exe

  • Size

    2.0MB

  • MD5

    3fce4a409fab35200322d06735aba8e3

  • SHA1

    37fc5ff03107595cf59fe99ac85212b51aa8eea2

  • SHA256

    a7f0c2616547f5d8e2f195b65005b392f45af89d7bfb40286bdd2c4c0bcb2451

  • SHA512

    b7348f51abe74dca02eb12c6154718e829f2a886d737ded6435d16dc51ecbf804a8fe057411e93d870ce7e5ba5acc778d772f875bb669fdf92823c6af76e8e50

  • SSDEEP

    49152:LOSqaLK77EGGVtlKlmGQ7ai7D3xTgOxYwpKoTwQLyhWveB+4goGQ7ai7D3xTgOxM:LOjO8jctlOmD2i7D3xkOxYwpKoTwr4vj

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
  • 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\3fce4a409fab35200322d06735aba8e3.exe
    "C:\Users\Admin\AppData\Local\Temp\3fce4a409fab35200322d06735aba8e3.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Users\Admin\AppData\Local\Temp\3fce4a409fab35200322d06735aba8e3.exe
      C:\Users\Admin\AppData\Local\Temp\3fce4a409fab35200322d06735aba8e3.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:624
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\3fce4a409fab35200322d06735aba8e3.exe" /TN xWvB9PLxff3d /F
        3⤵
        • Creates scheduled task(s)
        PID:1396
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN xWvB9PLxff3d > C:\Users\Admin\AppData\Local\Temp\uYtJVap.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4088
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 604
        3⤵
        • Program crash
        PID:3460
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 608
        3⤵
        • Program crash
        PID:2688
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 636
        3⤵
        • Program crash
        PID:4304
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 756
        3⤵
        • Program crash
        PID:2272
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 756
        3⤵
        • Program crash
        PID:4456
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 712
        3⤵
        • Program crash
        PID:3232
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 1480
        3⤵
        • Program crash
        PID:4928
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 1916
        3⤵
        • Program crash
        PID:1004
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 2144
        3⤵
        • Program crash
        PID:3296
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 1932
        3⤵
        • Program crash
        PID:3428
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 2132
        3⤵
        • Program crash
        PID:2612
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 2120
        3⤵
        • Program crash
        PID:1772
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 2160
        3⤵
        • Program crash
        PID:3584
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 2124
        3⤵
        • Program crash
        PID:2800
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 2112
        3⤵
        • Program crash
        PID:2536
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 1912
        3⤵
        • Program crash
        PID:4796
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 624 -s 600
        3⤵
        • Program crash
        PID:5008
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /Query /XML /TN xWvB9PLxff3d
    1⤵
      PID:1684
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 624 -ip 624
      1⤵
        PID:4832
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 624 -ip 624
        1⤵
          PID:4436
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 624 -ip 624
          1⤵
            PID:2316
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 624 -ip 624
            1⤵
              PID:2568
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 624 -ip 624
              1⤵
                PID:2132
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 624 -ip 624
                1⤵
                  PID:2060
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 624 -ip 624
                  1⤵
                    PID:4320
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 624 -ip 624
                    1⤵
                      PID:4420
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 624 -ip 624
                      1⤵
                        PID:4056
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 624 -ip 624
                        1⤵
                          PID:3512
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 624 -ip 624
                          1⤵
                            PID:3932
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 624 -ip 624
                            1⤵
                              PID:2316
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 624 -ip 624
                              1⤵
                                PID:2568
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 624 -ip 624
                                1⤵
                                  PID:4972
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 624 -ip 624
                                  1⤵
                                    PID:2028
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 624 -ip 624
                                    1⤵
                                      PID:1920
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 624 -ip 624
                                      1⤵
                                        PID:952

                                      Network

                                            MITRE ATT&CK Enterprise v15

                                            Replay Monitor

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                                            Downloads

                                            • C:\Users\Admin\AppData\Local\Temp\3fce4a409fab35200322d06735aba8e3.exe

                                              Filesize

                                              90KB

                                              MD5

                                              95b39a6808e01a23c07747e60e57edbc

                                              SHA1

                                              7f9ece4c8fc2caba08d2c7bcaeb38c8b5845e711

                                              SHA256

                                              544fcd66c9e9ff8f6b8db73fcc6324eb9ce571c5598ede61a6dfbaa460cbd0ed

                                              SHA512

                                              89931ff1a883cd04e41e3ab7a4520b803231f95010f7b060e8ae26c464946cb3be0bf6bdbfe5008df1906637b2532e25f8e5821649f9f9d09fd05b30143b741f

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

                                              Filesize

                                              1KB

                                              MD5

                                              cb9e1176494412fd5108d38d3cf947c4

                                              SHA1

                                              f75b9a1464d302434476a4ad190e29ade0890302

                                              SHA256

                                              89a00cef0788b128922fe755d80491abceb6fdc68406b59998b837c7163a328b

                                              SHA512

                                              c4608fb5b625cd4bb5c60229120e83e5ecc58cd181a5db82b5da27d98770119e716187519ade9b40e8506062ec2c0d4c93da3cfb31fba130ada46a0eb1c44f51

                                            • memory/624-15-0x0000000000400000-0x000000000065C000-memory.dmp

                                              Filesize

                                              2.4MB

                                            • memory/624-18-0x0000000001730000-0x00000000017AE000-memory.dmp

                                              Filesize

                                              504KB

                                            • memory/624-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                              Filesize

                                              428KB

                                            • memory/624-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                              Filesize

                                              364KB

                                            • memory/624-34-0x0000000000400000-0x000000000065C000-memory.dmp

                                              Filesize

                                              2.4MB

                                            • memory/2756-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                              Filesize

                                              2.4MB

                                            • memory/2756-5-0x0000000024FE0000-0x000000002505E000-memory.dmp

                                              Filesize

                                              504KB

                                            • memory/2756-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                              Filesize

                                              428KB

                                            • memory/2756-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                              Filesize

                                              428KB