Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 16:45

General

  • Target

    f791c1a7110aee7574026888645c783f.exe

  • Size

    2.0MB

  • MD5

    f791c1a7110aee7574026888645c783f

  • SHA1

    464ee53e7988c0ea5bd9dc2c29a172c5690a864a

  • SHA256

    b12a15670fa6772cec7412024a20e083dcef7e1f03e65ea07dca73408432ef31

  • SHA512

    fed5dd8f55f8c1b02460d3708fa666831463ab02ee163ff173f85a97e4a22ab44bda42259e426004de704cde5cf8c09bb93c941ee630bb256ce1c8ad3c89daf7

  • SSDEEP

    49152:N3fkjTtIJb4NGQk4QnoucN+9zWFULG+m7YnNkJ10LAdbjLcN+9zWFULG+:N3sjTtdk44o3A9zyULG+m7SkJ100dbjP

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 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\f791c1a7110aee7574026888645c783f.exe
    "C:\Users\Admin\AppData\Local\Temp\f791c1a7110aee7574026888645c783f.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1896
    • C:\Users\Admin\AppData\Local\Temp\f791c1a7110aee7574026888645c783f.exe
      C:\Users\Admin\AppData\Local\Temp\f791c1a7110aee7574026888645c783f.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 656
        3⤵
        • Program crash
        PID:1580
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 664
        3⤵
        • Program crash
        PID:3512
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 756
        3⤵
        • Program crash
        PID:3420
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 744
        3⤵
        • Program crash
        PID:2688
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 780
        3⤵
        • Program crash
        PID:376
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 1264
        3⤵
        • Program crash
        PID:1452
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 1916
        3⤵
        • Program crash
        PID:868
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 2144
        3⤵
        • Program crash
        PID:684
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 2096
        3⤵
        • Program crash
        PID:2300
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 1928
        3⤵
        • Program crash
        PID:4136
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 2164
        3⤵
        • Program crash
        PID:1304
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 1972
        3⤵
        • Program crash
        PID:3916
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 2220
        3⤵
        • Program crash
        PID:640
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 2180
        3⤵
        • Program crash
        PID:1760
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 1956
        3⤵
        • Program crash
        PID:2208
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 2240
        3⤵
        • Program crash
        PID:1440
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 736
        3⤵
        • Program crash
        PID:4064
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\f791c1a7110aee7574026888645c783f.exe" /TN mCaqQXkK46ae /F
    1⤵
    • Creates scheduled task(s)
    PID:1816
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /Query /XML /TN mCaqQXkK46ae
    1⤵
      PID:640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 364 -ip 364
      1⤵
        PID:3724
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 364 -s 616
        1⤵
        • Program crash
        PID:4304
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN mCaqQXkK46ae > C:\Users\Admin\AppData\Local\Temp\a5faqT0UQ.xml
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:2044
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 364 -ip 364
        1⤵
          PID:776
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 364 -ip 364
          1⤵
            PID:984
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 364 -ip 364
            1⤵
              PID:2068
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 364 -ip 364
              1⤵
                PID:2512
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 364 -ip 364
                1⤵
                  PID:4968
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 364 -ip 364
                  1⤵
                    PID:2252
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 364 -ip 364
                    1⤵
                      PID:2148
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 364 -ip 364
                      1⤵
                        PID:3684
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 364 -ip 364
                        1⤵
                          PID:4372
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 364 -ip 364
                          1⤵
                            PID:4808
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 364 -ip 364
                            1⤵
                              PID:3196
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 364 -ip 364
                              1⤵
                                PID:4168
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 364 -ip 364
                                1⤵
                                  PID:4816
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 616 -p 364 -ip 364
                                  1⤵
                                    PID:3264
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 364 -ip 364
                                    1⤵
                                      PID:5076
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 364 -ip 364
                                      1⤵
                                        PID:3076
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 364 -ip 364
                                        1⤵
                                          PID:1776

                                        Network

                                              MITRE ATT&CK Enterprise v15

                                              Replay Monitor

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                                              Downloads

                                              • C:\Users\Admin\AppData\Local\Temp\a5faqT0UQ.xml

                                                Filesize

                                                1KB

                                                MD5

                                                10f925bb6a656f74151bcecadfd28318

                                                SHA1

                                                1dae41ec5788ba7df4da1f0509c03e00d6742c0a

                                                SHA256

                                                c9b1072d6e4f2d59f7794fe3b81262c212416dbda08fa30cc4f852aa5fac60f8

                                                SHA512

                                                37854a78369cfbe41bc314942f1e802a383f93d634fe772493e9f1ce498f3acb7fb9d035880c407287415ef4970727efe3cdc7090c18f38d414076b4f9ae743e

                                              • C:\Users\Admin\AppData\Local\Temp\f791c1a7110aee7574026888645c783f.exe

                                                Filesize

                                                1.3MB

                                                MD5

                                                e3ffd618b7c76441ee54da2a8feed131

                                                SHA1

                                                3102e7e5c79525be81d77302651777e97511a20e

                                                SHA256

                                                0686590b35e35e10579ed989bbe1d59f709ca2419720936a636c8f965902b771

                                                SHA512

                                                096a5902ebb1748c290f50bc8456f0092b7b0ac8a5831bdfd759a03241780631e793ee9dc8af4858c8dada30fa2dab3ef888af81a43f94e4a1aef4f3b9caf9cf

                                              • memory/364-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                                Filesize

                                                2.4MB

                                              • memory/364-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                                Filesize

                                                428KB

                                              • memory/364-18-0x0000000001720000-0x000000000179E000-memory.dmp

                                                Filesize

                                                504KB

                                              • memory/364-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                                Filesize

                                                364KB

                                              • memory/364-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                                Filesize

                                                2.4MB

                                              • memory/1896-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                                Filesize

                                                2.4MB

                                              • memory/1896-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                                Filesize

                                                428KB

                                              • memory/1896-4-0x0000000001730000-0x00000000017AE000-memory.dmp

                                                Filesize

                                                504KB

                                              • memory/1896-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                                Filesize

                                                428KB