Analysis

  • max time kernel
    124s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-01-2024 07:35

General

  • Target

    76c37677f3d520bf2b445763963bffff.exe

  • Size

    2.0MB

  • MD5

    76c37677f3d520bf2b445763963bffff

  • SHA1

    bd6f5477d36d3bb9b961cf0a219ed6bb937bb349

  • SHA256

    21e538e53342d6ef23fd623b3b54bea2016196386f113578f97f880c5d25954d

  • SHA512

    77c43baa1d5ce25602bd066bcfd52d0f439b2ac2d7e3ba9cdba366c46db016778957a7132e21125599976e2b000fa6cbf94393971b6c98495535f3930c208a81

  • SSDEEP

    49152:e1YY9RlMx1WnxAX+vu2zBF1BFRVhBonxAX:w9RlMHWnxAXsu2zBnrRVhBonxAX

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 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\76c37677f3d520bf2b445763963bffff.exe
    "C:\Users\Admin\AppData\Local\Temp\76c37677f3d520bf2b445763963bffff.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Users\Admin\AppData\Local\Temp\76c37677f3d520bf2b445763963bffff.exe
      C:\Users\Admin\AppData\Local\Temp\76c37677f3d520bf2b445763963bffff.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:4512
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\76c37677f3d520bf2b445763963bffff.exe" /TN Jdf19jEI5ce2 /F
        3⤵
        • Creates scheduled task(s)
        PID:3600
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN Jdf19jEI5ce2 > C:\Users\Admin\AppData\Local\Temp\DFHQs3eT.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4620
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 608
        3⤵
        • Program crash
        PID:2324
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 648
        3⤵
        • Program crash
        PID:5088
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 656
        3⤵
        • Program crash
        PID:432
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 660
        3⤵
        • Program crash
        PID:4956
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 760
        3⤵
        • Program crash
        PID:4540
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 784
        3⤵
        • Program crash
        PID:4088
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1464
        3⤵
        • Program crash
        PID:4968
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1912
        3⤵
        • Program crash
        PID:3764
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 2144
        3⤵
        • Program crash
        PID:2464
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 2020
        3⤵
        • Program crash
        PID:3876
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1632
        3⤵
        • Program crash
        PID:3232
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1888
        3⤵
        • Program crash
        PID:1660
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1916
        3⤵
        • Program crash
        PID:1188
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 2132
        3⤵
        • Program crash
        PID:2836
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1912
        3⤵
        • Program crash
        PID:4548
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1980
        3⤵
        • Program crash
        PID:3732
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 1948
        3⤵
        • Program crash
        PID:432
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 620
        3⤵
        • Program crash
        PID:3444
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /Query /XML /TN Jdf19jEI5ce2
    1⤵
      PID:1320
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4512 -ip 4512
      1⤵
        PID:1768
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4512 -ip 4512
        1⤵
          PID:3532
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4512 -ip 4512
          1⤵
            PID:2992
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4512 -ip 4512
            1⤵
              PID:1224
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4512 -ip 4512
              1⤵
                PID:2068
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4512 -ip 4512
                1⤵
                  PID:3216
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4512 -ip 4512
                  1⤵
                    PID:2940
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4512 -ip 4512
                    1⤵
                      PID:816
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4512 -ip 4512
                      1⤵
                        PID:4808
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4512 -ip 4512
                        1⤵
                          PID:2500
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4512 -ip 4512
                          1⤵
                            PID:4616
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4512 -ip 4512
                            1⤵
                              PID:4368
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4512 -ip 4512
                              1⤵
                                PID:1928
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 4512 -ip 4512
                                1⤵
                                  PID:4900
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4512 -ip 4512
                                  1⤵
                                    PID:4076
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4512 -ip 4512
                                    1⤵
                                      PID:1364
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4512 -ip 4512
                                      1⤵
                                        PID:4668
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4512 -ip 4512
                                        1⤵
                                          PID:4952

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\76c37677f3d520bf2b445763963bffff.exe

                                          Filesize

                                          2.0MB

                                          MD5

                                          68aa87e0067c395aaa4f67650daf931f

                                          SHA1

                                          5edf17a677d3308eb7fc1d7cf88b1e741d27ce6f

                                          SHA256

                                          1c40bdab7a2c31af290e0895d4c6dd5c84a155de79e761bc0a84e52fb6921c00

                                          SHA512

                                          28760183cfb2bf520f9f071247345e1e0bdc679696c7653c8f78fb4d3a5bab7f117359ee4210e588bc505f2b7ac1fda62bfb14200a4561c69915c0ec75e3da4f

                                        • C:\Users\Admin\AppData\Local\Temp\DFHQs3eT.xml

                                          Filesize

                                          1KB

                                          MD5

                                          a513ff58ae257eff80b0e7517f330b13

                                          SHA1

                                          fa73a35139839e20c5eb14884e6f204dcb9d1fed

                                          SHA256

                                          ade24c38d847cfd6f4ba455048ed1d483b6f24cdd27c0a089d2ec3e1348631c8

                                          SHA512

                                          479b39efe3a6cabce9fe70fe2adf76443a7e3fe923929d71e77800530ccb2bed808d0e2925781d9a2ee168ef24189b967b1b27daf99e73e38c8d8d3c3994d479

                                        • memory/2772-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/2772-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/2772-7-0x0000000025030000-0x00000000250AE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/2772-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4512-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/4512-18-0x0000000025030000-0x00000000250AE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/4512-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/4512-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4512-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB