Analysis

  • max time kernel
    144s
  • 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
    31/12/2023, 13:10

General

  • Target

    3766cb08bc2ab729eff445b120679898.exe

  • Size

    1003KB

  • MD5

    3766cb08bc2ab729eff445b120679898

  • SHA1

    f7741cc8831ef082598a58203f77b6c95058cf1d

  • SHA256

    3f24f3a7fee965ed061011fe0b73dc15b3ca35345b911f3a0544d2c15b25edbb

  • SHA512

    66cc896e42a28a106bb37295b8fb4f06b92e1419f47e3d33ef64d3a5936ec35af3bd2f3ea8bb926e94dc8bffc49ef3709b7f450ab194c08a6a3e0b37699e7d7c

  • SSDEEP

    24576:7Gvr6pL0Ttyduh4cfK2frNkziacRbT0RbTr/Rm:7Gvr6pL0pykW5SNkzURnGbTr/4

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\3766cb08bc2ab729eff445b120679898.exe
    "C:\Users\Admin\AppData\Local\Temp\3766cb08bc2ab729eff445b120679898.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:5008
    • C:\Users\Admin\AppData\Local\Temp\3766cb08bc2ab729eff445b120679898.exe
      C:\Users\Admin\AppData\Local\Temp\3766cb08bc2ab729eff445b120679898.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:4028
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 780
        3⤵
        • Program crash
        PID:4848
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 788
        3⤵
        • Program crash
        PID:4676
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1456
        3⤵
        • Program crash
        PID:2008
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1624
        3⤵
        • Program crash
        PID:3140
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 2144
        3⤵
        • Program crash
        PID:2860
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 2096
        3⤵
        • Program crash
        PID:4520
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1924
        3⤵
        • Program crash
        PID:3000
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1920
        3⤵
        • Program crash
        PID:1640
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1624
        3⤵
        • Program crash
        PID:448
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1968
        3⤵
        • Program crash
        PID:3060
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1956
        3⤵
        • Program crash
        PID:5052
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 2196
        3⤵
        • Program crash
        PID:2576
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 1980
        3⤵
        • Program crash
        PID:3544
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 612
        3⤵
        • Program crash
        PID:5100
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\3766cb08bc2ab729eff445b120679898.exe" /TN qPTTkyZ9c33c /F
    1⤵
    • Creates scheduled task(s)
    PID:2324
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4028 -ip 4028
    1⤵
      PID:980
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 604
      1⤵
      • Program crash
      PID:2892
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks.exe /Query /XML /TN qPTTkyZ9c33c
      1⤵
        PID:2576
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN qPTTkyZ9c33c > C:\Users\Admin\AppData\Local\Temp\bNqj68A.xml
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:3392
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4028 -ip 4028
        1⤵
          PID:4592
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 644
          1⤵
          • Program crash
          PID:1668
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4028 -ip 4028
          1⤵
            PID:1320
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 620
            1⤵
            • Program crash
            PID:3424
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4028 -ip 4028
            1⤵
              PID:4948
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4028 -s 752
              1⤵
              • Program crash
              PID:4364
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4028 -ip 4028
              1⤵
                PID:2648
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4028 -ip 4028
                1⤵
                  PID:1712
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4028 -ip 4028
                  1⤵
                    PID:1420
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4028 -ip 4028
                    1⤵
                      PID:824
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4028 -ip 4028
                      1⤵
                        PID:4368
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4028 -ip 4028
                        1⤵
                          PID:2116
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 4028 -ip 4028
                          1⤵
                            PID:1404
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4028 -ip 4028
                            1⤵
                              PID:3324
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4028 -ip 4028
                              1⤵
                                PID:2228
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4028 -ip 4028
                                1⤵
                                  PID:4036
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4028 -ip 4028
                                  1⤵
                                    PID:3488
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4028 -ip 4028
                                    1⤵
                                      PID:1084
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4028 -ip 4028
                                      1⤵
                                        PID:1392
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4028 -ip 4028
                                        1⤵
                                          PID:3392

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\3766cb08bc2ab729eff445b120679898.exe

                                          Filesize

                                          1003KB

                                          MD5

                                          57da1603164cb70eb7de508d8ba50e1a

                                          SHA1

                                          92fad2fa4a3570aa8add96f7ec78e5949e3b937a

                                          SHA256

                                          e8be937044a2305ee12ccb8d9ef583291ad48253f2206a1c8918b397457b2a97

                                          SHA512

                                          a624426dc2674661b4728aebcecdc35eae52692fed66d3229f19c735c55a7c9001048e8adfd843d9c6aaa20cb83ec10063fdffef335039995e0635e908bedf93

                                        • memory/4028-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/4028-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4028-21-0x0000000025040000-0x00000000250BE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/4028-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/4028-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/5008-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/5008-2-0x0000000024FE0000-0x000000002505E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/5008-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/5008-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB