Analysis

  • max time kernel
    137s
  • 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
    05/03/2024, 07:22

General

  • Target

    b420057be318dcc411e41bddd409a9c0.exe

  • Size

    3.9MB

  • MD5

    b420057be318dcc411e41bddd409a9c0

  • SHA1

    16a9bdb6ddd7b678a94a74d2a55aa80f82ca69d3

  • SHA256

    90e51dc55da13d5a3c67ea63f43b75bc7bb515ff11f9a0a5c355c95aca1cc4bf

  • SHA512

    65c9d9200ec1b8ab75419acdcf28f80a99ecf3a8568ebcad866f02f7a38cbd16a3cda34e2b61713070032f44edc522d3eea3c71632f9efb4f38cf2c6e7434ff3

  • SSDEEP

    98304:52OF3pPqGrnaAcakcibiqhd+UhQdiqcakcibiqhtnr+ckuwkteNKUWcakcibiqh9:UOppPDrrdlirzJoiqdlirvTwTUNdlirB

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\b420057be318dcc411e41bddd409a9c0.exe
    "C:\Users\Admin\AppData\Local\Temp\b420057be318dcc411e41bddd409a9c0.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:432
    • C:\Users\Admin\AppData\Local\Temp\b420057be318dcc411e41bddd409a9c0.exe
      C:\Users\Admin\AppData\Local\Temp\b420057be318dcc411e41bddd409a9c0.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\b420057be318dcc411e41bddd409a9c0.exe" /TN Zu1tk2JP99e9 /F
        3⤵
        • Creates scheduled task(s)
        PID:3436
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN Zu1tk2JP99e9 > C:\Users\Admin\AppData\Local\Temp\D6DER.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4412
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN Zu1tk2JP99e9
          4⤵
            PID:3368
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 604
          3⤵
          • Program crash
          PID:5116
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 632
          3⤵
          • Program crash
          PID:3464
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 640
          3⤵
          • Program crash
          PID:1256
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 720
          3⤵
          • Program crash
          PID:3232
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 720
          3⤵
          • Program crash
          PID:4500
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 780
          3⤵
          • Program crash
          PID:1828
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1600
          3⤵
          • Program crash
          PID:4228
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1624
          3⤵
          • Program crash
          PID:2144
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 2144
          3⤵
          • Program crash
          PID:4888
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1944
          3⤵
          • Program crash
          PID:460
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1940
          3⤵
          • Program crash
          PID:4828
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1632
          3⤵
          • Program crash
          PID:4724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 2124
          3⤵
          • Program crash
          PID:4868
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1944
          3⤵
          • Program crash
          PID:1256
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1932
          3⤵
          • Program crash
          PID:2928
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 2168
          3⤵
          • Program crash
          PID:4080
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 2108
          3⤵
          • Program crash
          PID:1520
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 628
          3⤵
          • Program crash
          PID:3684
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1660 -ip 1660
      1⤵
        PID:4912
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1660 -ip 1660
        1⤵
          PID:4724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1660 -ip 1660
          1⤵
            PID:2788
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1660 -ip 1660
            1⤵
              PID:5024
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1660 -ip 1660
              1⤵
                PID:4516
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1660 -ip 1660
                1⤵
                  PID:812
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1660 -ip 1660
                  1⤵
                    PID:4572
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1660 -ip 1660
                    1⤵
                      PID:1888
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1660 -ip 1660
                      1⤵
                        PID:4000
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1660 -ip 1660
                        1⤵
                          PID:4004
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1660 -ip 1660
                          1⤵
                            PID:3056
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1660 -ip 1660
                            1⤵
                              PID:1216
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1660 -ip 1660
                              1⤵
                                PID:4088
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1660 -ip 1660
                                1⤵
                                  PID:3860
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1660 -ip 1660
                                  1⤵
                                    PID:3976
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 1660 -ip 1660
                                    1⤵
                                      PID:3628
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1660 -ip 1660
                                      1⤵
                                        PID:4724
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1660 -ip 1660
                                        1⤵
                                          PID:672

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\D6DER.xml

                                          Filesize

                                          1KB

                                          MD5

                                          9a30f0d6407d830fd43a3879d0ef117b

                                          SHA1

                                          cfe946b1a3275459bd5cab24772b6fa3c9161dd2

                                          SHA256

                                          463805b7dc2871549b5cbbfaca9d717d572985f6dc1182c2b268999c3193522d

                                          SHA512

                                          849db05b924b55a3f36fd6117a1902bdcbdfd47cd350c2d1d99174ab66f3233622b6754135173be8bb200eb9562e96604d38637ef74e552114fd022be0c50d8b

                                        • C:\Users\Admin\AppData\Local\Temp\b420057be318dcc411e41bddd409a9c0.exe

                                          Filesize

                                          3.9MB

                                          MD5

                                          935b9b3d43cd91394a7e6b4e2747c6cf

                                          SHA1

                                          49df8bbee92186ce87720a985c92226f438f55a6

                                          SHA256

                                          8bb5709da5b145cf590de76a1bb09b6ecbde388e06597abc4b994dd88c08db98

                                          SHA512

                                          c146aec79871ae2727efc2e35b0531bb2ac4a406ac8b23492f9fc5716beb4abaa0215add72d124f2c278958489c7ec0de8ba62cefb56f4145487728be8af9790

                                        • memory/432-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/432-2-0x0000000025010000-0x000000002508E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/432-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/432-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/1660-15-0x00000000018D0000-0x000000000194E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/1660-17-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/1660-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/1660-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/1660-40-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB