Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-12-2023 10:07

General

  • Target

    1561bf3b1ba0fa370abc5c2651498d64.exe

  • Size

    1.6MB

  • MD5

    1561bf3b1ba0fa370abc5c2651498d64

  • SHA1

    a6b8bb86cc655ac4652128e69ba2b4265cc337de

  • SHA256

    82947ca70f901c7d16e2d3053826e37ddff8847d21276374de19f542abc80136

  • SHA512

    cc5c9db484b1cdfdfe7153253982f0adcde18ff1c57666a8a7facf000ef74a34f16636521730572483c317975f62f3923c663e9f3a40d55d47a6cb04534a1db1

  • SSDEEP

    49152:yBeoax+3zbI9bi+DTfcakLz0DpO2ItHo+v1xK3oEe/JLcfgEfdDShcakLz0O:yBRc0o1DTfcakcDpO5I+v1xVnGfgMdDt

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 16 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\1561bf3b1ba0fa370abc5c2651498d64.exe
    "C:\Users\Admin\AppData\Local\Temp\1561bf3b1ba0fa370abc5c2651498d64.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Users\Admin\AppData\Local\Temp\1561bf3b1ba0fa370abc5c2651498d64.exe
      C:\Users\Admin\AppData\Local\Temp\1561bf3b1ba0fa370abc5c2651498d64.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:2704
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\1561bf3b1ba0fa370abc5c2651498d64.exe" /TN BLiB1zkTf55f /F
        3⤵
        • Creates scheduled task(s)
        PID:3672
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN BLiB1zkTf55f > C:\Users\Admin\AppData\Local\Temp\A2Zb8271.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2364
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN BLiB1zkTf55f
          4⤵
            PID:3604
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 604
          3⤵
          • Program crash
          PID:1148
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 632
          3⤵
          • Program crash
          PID:384
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 740
          3⤵
          • Program crash
          PID:752
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 744
          3⤵
          • Program crash
          PID:5028
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 776
          3⤵
          • Program crash
          PID:1736
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 784
          3⤵
          • Program crash
          PID:2352
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1468
          3⤵
          • Program crash
          PID:4360
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1920
          3⤵
          • Program crash
          PID:3440
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 2144
          3⤵
          • Program crash
          PID:752
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1956
          3⤵
          • Program crash
          PID:3556
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1924
          3⤵
          • Program crash
          PID:3968
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 2148
          3⤵
          • Program crash
          PID:2016
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1996
          3⤵
          • Program crash
          PID:628
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1948
          3⤵
          • Program crash
          PID:2092
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1928
          3⤵
          • Program crash
          PID:3700
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2704 -s 1992
          3⤵
          • Program crash
          PID:232
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2704 -ip 2704
      1⤵
        PID:1908
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2704 -ip 2704
        1⤵
          PID:1940
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2704 -ip 2704
          1⤵
            PID:3984
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2704 -ip 2704
            1⤵
              PID:228
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2704 -ip 2704
              1⤵
                PID:628
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 2704 -ip 2704
                1⤵
                  PID:3488
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2704 -ip 2704
                  1⤵
                    PID:2264
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2704 -ip 2704
                    1⤵
                      PID:2748
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2704 -ip 2704
                      1⤵
                        PID:3240
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2704 -ip 2704
                        1⤵
                          PID:4316
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2704 -ip 2704
                          1⤵
                            PID:2728
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2704 -ip 2704
                            1⤵
                              PID:2184
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2704 -ip 2704
                              1⤵
                                PID:2836
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2704 -ip 2704
                                1⤵
                                  PID:1940
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2704 -ip 2704
                                  1⤵
                                    PID:1104
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2704 -ip 2704
                                    1⤵
                                      PID:1956

                                    Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

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                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Temp\1561bf3b1ba0fa370abc5c2651498d64.exe

                                      Filesize

                                      1.6MB

                                      MD5

                                      dc0ce9537427c1fb45b3d819a76bf6ec

                                      SHA1

                                      814497be873990298c9d583b15862310d6a248cd

                                      SHA256

                                      82805964bb1977914ad881ed7943c5804d9c76de1689e4f0538cf37c5545f76f

                                      SHA512

                                      91eff58f6a4301bce78289527d72f3d9f9e12c7b475cb25074df0513cd7fa98c2604d59a8e2e4f3f954b29279c32f1702526a3f45f823b15f4b353254a73acb7

                                    • C:\Users\Admin\AppData\Local\Temp\A2Zb8271.xml

                                      Filesize

                                      1KB

                                      MD5

                                      993ce7b1ae571e69f2e8ba3fc99cb979

                                      SHA1

                                      20322c4183aaa679deab6acec93f71889c9b21a2

                                      SHA256

                                      fb302d5d69bbecba38a4cbe56f89658cf98f807ddb112b41fad201981e4621bf

                                      SHA512

                                      bf243470c34e3ce266e1dec920a111e98a404216c16d8878817374ff280d188f0334901308a7f96f5310be8541dd1feeb9d4e67e370c0a7471f148361360fc8f

                                    • memory/2704-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                      Filesize

                                      2.4MB

                                    • memory/2704-17-0x0000000024FE0000-0x000000002505E000-memory.dmp

                                      Filesize

                                      504KB

                                    • memory/2704-23-0x0000000000470000-0x00000000004DB000-memory.dmp

                                      Filesize

                                      428KB

                                    • memory/2704-24-0x0000000000400000-0x000000000045B000-memory.dmp

                                      Filesize

                                      364KB

                                    • memory/2704-33-0x0000000000400000-0x000000000065C000-memory.dmp

                                      Filesize

                                      2.4MB

                                    • memory/3504-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                      Filesize

                                      2.4MB

                                    • memory/3504-2-0x0000000001720000-0x000000000179E000-memory.dmp

                                      Filesize

                                      504KB

                                    • memory/3504-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                      Filesize

                                      428KB

                                    • memory/3504-11-0x0000000000400000-0x000000000065C000-memory.dmp

                                      Filesize

                                      2.4MB

                                    • memory/3504-15-0x0000000000400000-0x000000000046B000-memory.dmp

                                      Filesize

                                      428KB