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Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 13:37

General

  • Target

    a818fa4846e5a1d2f74be5951c3fdcb7.exe

  • Size

    1.6MB

  • MD5

    a818fa4846e5a1d2f74be5951c3fdcb7

  • SHA1

    c12242344d94c1486455d6a835004cdc51051857

  • SHA256

    1b6453ad887e4841c93d28037cf801493f16ab702a7019e4743449a5a31da955

  • SHA512

    1343fff9ce3f63da0ca719b52af5add878df6d202283fea5cb77499c10263a46474f9f5ea39a8f574899e60b1743b49f80dbdaf201fcebc7a8de95387a985a4e

  • SSDEEP

    49152:0sEAfnuuMncakLz0XWzJy581Sa3cakLz0O:0sEAfnuuMncakcmzU581lcakcO

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\a818fa4846e5a1d2f74be5951c3fdcb7.exe
    "C:\Users\Admin\AppData\Local\Temp\a818fa4846e5a1d2f74be5951c3fdcb7.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:348
    • C:\Users\Admin\AppData\Local\Temp\a818fa4846e5a1d2f74be5951c3fdcb7.exe
      C:\Users\Admin\AppData\Local\Temp\a818fa4846e5a1d2f74be5951c3fdcb7.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:3128
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\a818fa4846e5a1d2f74be5951c3fdcb7.exe" /TN 0Su7L8S745c1 /F
        3⤵
        • Creates scheduled task(s)
        PID:1548
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN 0Su7L8S745c1 > C:\Users\Admin\AppData\Local\Temp\ZR6SXZ4u.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2092
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN 0Su7L8S745c1
          4⤵
            PID:2724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 620
          3⤵
          • Program crash
          PID:1488
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 648
          3⤵
          • Program crash
          PID:2428
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 656
          3⤵
          • Program crash
          PID:4816
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 652
          3⤵
          • Program crash
          PID:3476
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 740
          3⤵
          • Program crash
          PID:3700
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 780
          3⤵
          • Program crash
          PID:4876
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1456
          3⤵
          • Program crash
          PID:5000
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1916
          3⤵
          • Program crash
          PID:4652
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 2144
          3⤵
          • Program crash
          PID:1680
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 2108
          3⤵
          • Program crash
          PID:4008
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1876
          3⤵
          • Program crash
          PID:1096
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 2124
          3⤵
          • Program crash
          PID:2372
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1948
          3⤵
          • Program crash
          PID:4164
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1964
          3⤵
          • Program crash
          PID:4080
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1960
          3⤵
          • Program crash
          PID:1268
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 2132
          3⤵
          • Program crash
          PID:4444
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1996
          3⤵
          • Program crash
          PID:4112
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 632
          3⤵
          • Program crash
          PID:2372
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3128 -ip 3128
      1⤵
        PID:316
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3128 -ip 3128
        1⤵
          PID:2732
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3128 -ip 3128
          1⤵
            PID:4912
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3128 -ip 3128
            1⤵
              PID:4300
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3128 -ip 3128
              1⤵
                PID:4112
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3128 -ip 3128
                1⤵
                  PID:1172
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3128 -ip 3128
                  1⤵
                    PID:5116
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3128 -ip 3128
                    1⤵
                      PID:3692
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3128 -ip 3128
                      1⤵
                        PID:3712
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3128 -ip 3128
                        1⤵
                          PID:2860
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3128 -ip 3128
                          1⤵
                            PID:3536
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3128 -ip 3128
                            1⤵
                              PID:4692
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3128 -ip 3128
                              1⤵
                                PID:1724
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3128 -ip 3128
                                1⤵
                                  PID:4436
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3128 -ip 3128
                                  1⤵
                                    PID:2932
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3128 -ip 3128
                                    1⤵
                                      PID:4212
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 3128 -ip 3128
                                      1⤵
                                        PID:3476
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3128 -ip 3128
                                        1⤵
                                          PID:4904

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\ZR6SXZ4u.xml

                                          Filesize

                                          1KB

                                          MD5

                                          ae8d8acec3cbafea021783d9f133e0b6

                                          SHA1

                                          6a67798b3aef6a7c37f02d7cc4ada2d0a519cc21

                                          SHA256

                                          d540d67feb1878506025c298873f766c26a51301df8cf4e4461eb588831816f0

                                          SHA512

                                          a75f35530f94c40f6b3d64363e1d74247c05208428e7411254d7c8d522343b8e1ab28c74ed3cfcc7c5c900e0c4d0a08d5110c445ae8f84e345cc4afbdec09336

                                        • C:\Users\Admin\AppData\Local\Temp\a818fa4846e5a1d2f74be5951c3fdcb7.exe

                                          Filesize

                                          207KB

                                          MD5

                                          5f8a9103fb9767e0c139df6ff8c3cda6

                                          SHA1

                                          f525a89c7f40ba7e427dbbd16127d6d05206d5fc

                                          SHA256

                                          f0e5bf5dc09a71ea7f23a7dd9a2463b305dd67f9327ee9250b61e78b23e4f4cf

                                          SHA512

                                          33b3debe2f7a9be46255420c71f65d88b302eaafc88b6d00e13052e0d7ac3d54c2b46dc14a0bd8d642dc04871dcc1ed9f05d79e67eb3bc0f3825414808a58e80

                                        • memory/348-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/348-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/348-7-0x0000000001730000-0x00000000017AE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/348-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/3128-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/3128-17-0x0000000001660000-0x00000000016DE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/3128-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/3128-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/3128-40-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB