Analysis

  • max time kernel
    143s
  • max time network
    152s
  • 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, 14:03

General

  • Target

    b56b27c90d07c3ca90f30bb5197349fb.exe

  • Size

    3.2MB

  • MD5

    b56b27c90d07c3ca90f30bb5197349fb

  • SHA1

    91c0f9bd05c87541ebf84da9a3f6d575e40120a2

  • SHA256

    ea3325d00f7766885fb0b826b8aba05432cc81924fab37137f87d322f6156631

  • SHA512

    1b86851c1356d458c6cac5a6bbc7d8c2c175f3e93b5387a82224d11fc72192cf58eca93e216b74a9aa521ec7421bd110b5d14b09a32a25fd5d618a0c30679b2a

  • SSDEEP

    98304:zP4Dv3cakc1HVRs1kGnemcakccc5vU10NgDcakc1HVRs1kGnemcakcO:zgDPdlS2rmdlckHgDdlS2rmdlO

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\b56b27c90d07c3ca90f30bb5197349fb.exe
    "C:\Users\Admin\AppData\Local\Temp\b56b27c90d07c3ca90f30bb5197349fb.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:220
    • C:\Users\Admin\AppData\Local\Temp\b56b27c90d07c3ca90f30bb5197349fb.exe
      C:\Users\Admin\AppData\Local\Temp\b56b27c90d07c3ca90f30bb5197349fb.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\b56b27c90d07c3ca90f30bb5197349fb.exe" /TN 91YuFL8m6860 /F
        3⤵
        • Creates scheduled task(s)
        PID:2068
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN 91YuFL8m6860 > C:\Users\Admin\AppData\Local\Temp\iUba1.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4816
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN 91YuFL8m6860
          4⤵
            PID:3724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 604
          3⤵
          • Program crash
          PID:844
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 628
          3⤵
          • Program crash
          PID:976
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 636
          3⤵
          • Program crash
          PID:3160
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 640
          3⤵
          • Program crash
          PID:3992
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 780
          3⤵
          • Program crash
          PID:1944
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 820
          3⤵
          • Program crash
          PID:924
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1468
          3⤵
          • Program crash
          PID:768
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1916
          3⤵
          • Program crash
          PID:4356
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2144
          3⤵
          • Program crash
          PID:2292
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1932
          3⤵
          • Program crash
          PID:1388
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1920
          3⤵
          • Program crash
          PID:1264
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2140
          3⤵
          • Program crash
          PID:2128
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2180
          3⤵
          • Program crash
          PID:4644
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2196
          3⤵
          • Program crash
          PID:4124
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2208
          3⤵
          • Program crash
          PID:368
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2000
          3⤵
          • Program crash
          PID:3448
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 624
          3⤵
          • Program crash
          PID:2780
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2796 -ip 2796
      1⤵
        PID:2692
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2796 -ip 2796
        1⤵
          PID:3800
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2796 -ip 2796
          1⤵
            PID:2972
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2796 -ip 2796
            1⤵
              PID:3320
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2796 -ip 2796
              1⤵
                PID:2648
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2796 -ip 2796
                1⤵
                  PID:3912
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2796 -ip 2796
                  1⤵
                    PID:2252
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2796 -ip 2796
                    1⤵
                      PID:2936
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2796 -ip 2796
                      1⤵
                        PID:4516
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2796 -ip 2796
                        1⤵
                          PID:4448
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2796 -ip 2796
                          1⤵
                            PID:4480
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2796 -ip 2796
                            1⤵
                              PID:1712
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2796 -ip 2796
                              1⤵
                                PID:4316
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2796 -ip 2796
                                1⤵
                                  PID:4388
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2796 -ip 2796
                                  1⤵
                                    PID:3420
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2796 -ip 2796
                                    1⤵
                                      PID:2280
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2796 -ip 2796
                                      1⤵
                                        PID:3252

                                      Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Temp\b56b27c90d07c3ca90f30bb5197349fb.exe

                                        Filesize

                                        3.2MB

                                        MD5

                                        f2a3631bdd62dae03e1689b5ab6f9be8

                                        SHA1

                                        e4d3a9e9cdbba1b331cd8cfc8cf32179a13910da

                                        SHA256

                                        0de244e1aa309f7f6f3fb36159d762ec9252f49bd017f446163ba808f2979c48

                                        SHA512

                                        433a767d4fc206589ea9ad4e25ad72616640e12176dc89d19d4bd45db4b2561973ade0c2ea8ad86f5f9eceb4fde3e0716fc4010d7d92e4b030a841519491caa2

                                      • C:\Users\Admin\AppData\Local\Temp\iUba1.xml

                                        Filesize

                                        1KB

                                        MD5

                                        6a455c9015a541f768c0ca6e75d1a50b

                                        SHA1

                                        0297951c741f1ca98af9f8ebc78745be6818c0e5

                                        SHA256

                                        c8e9af9f6b91267c9088dc40bb0dae5f50c3dccefec01740ad48bf0f8bc34125

                                        SHA512

                                        e66bc242b4912da51d5b527d2208eaeb15962650ce2a631fdacde1fa930a554960219cd6db63c1f62e8629c1a2cad21069b272c7db90919c3c8751ea332db284

                                      • memory/220-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                        Filesize

                                        2.4MB

                                      • memory/220-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                        Filesize

                                        428KB

                                      • memory/220-3-0x0000000001760000-0x00000000017DE000-memory.dmp

                                        Filesize

                                        504KB

                                      • memory/220-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                        Filesize

                                        428KB

                                      • memory/2796-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                        Filesize

                                        2.4MB

                                      • memory/2796-17-0x00000000018E0000-0x000000000195E000-memory.dmp

                                        Filesize

                                        504KB

                                      • memory/2796-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                        Filesize

                                        428KB

                                      • memory/2796-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                        Filesize

                                        364KB

                                      • memory/2796-40-0x0000000000400000-0x000000000065C000-memory.dmp

                                        Filesize

                                        2.4MB