Analysis

  • max time kernel
    148s
  • max time network
    138s
  • 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, 14:06

General

  • Target

    b75093321664bd4bf0cafd5cb368090f.exe

  • Size

    1.5MB

  • MD5

    b75093321664bd4bf0cafd5cb368090f

  • SHA1

    42454b1172a0be8673d74a156ddfd8e14f42e3ff

  • SHA256

    0a78340e5b963dc6f669f795694c66e0e7c543df675bb62393578bdd88f006b4

  • SHA512

    9f3e15eb5808d8f9e9df3a12940b50f15bbc5f1249b2bbe11e092d87244f4629c776d8e741712b30ce35b827197dba7bc8f7999b07c4a1ccdf18080d21e5b6f7

  • SSDEEP

    24576:qtlufy08wdj8ARgcjukL2Iqxui71kyhJH6cjukL2Y:qvuL8wdj7RgcakLxi71kiJacakLj

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\b75093321664bd4bf0cafd5cb368090f.exe
    "C:\Users\Admin\AppData\Local\Temp\b75093321664bd4bf0cafd5cb368090f.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2620
    • C:\Users\Admin\AppData\Local\Temp\b75093321664bd4bf0cafd5cb368090f.exe
      C:\Users\Admin\AppData\Local\Temp\b75093321664bd4bf0cafd5cb368090f.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:968
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 652
        3⤵
        • Program crash
        PID:2444
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 652
        3⤵
        • Program crash
        PID:2608
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 788
        3⤵
        • Program crash
        PID:2868
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1464
        3⤵
        • Program crash
        PID:1932
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1624
        3⤵
        • Program crash
        PID:4964
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 2144
        3⤵
        • Program crash
        PID:3780
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 2096
        3⤵
        • Program crash
        PID:3092
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1952
        3⤵
        • Program crash
        PID:3476
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 2152
        3⤵
        • Program crash
        PID:3612
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 2128
        3⤵
        • Program crash
        PID:3528
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1964
        3⤵
        • Program crash
        PID:2660
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1976
        3⤵
        • Program crash
        PID:624
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1964
        3⤵
        • Program crash
        PID:1828
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 1960
        3⤵
        • Program crash
        PID:3740
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 656
        3⤵
        • Program crash
        PID:1376
  • C:\Windows\SysWOW64\cmd.exe
    cmd.exe /c schtasks.exe /Query /XML /TN mCaqQXkK46ae > C:\Users\Admin\AppData\Local\Temp\K4zi9bL.xml
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2120
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks.exe /Query /XML /TN mCaqQXkK46ae
      2⤵
        PID:4272
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 968 -ip 968
      1⤵
        PID:4504
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 616
        1⤵
        • Program crash
        PID:4228
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\b75093321664bd4bf0cafd5cb368090f.exe" /TN mCaqQXkK46ae /F
        1⤵
        • Creates scheduled task(s)
        PID:2308
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 968 -ip 968
        1⤵
          PID:4244
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 608
          1⤵
          • Program crash
          PID:1020
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 968 -ip 968
          1⤵
            PID:868
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 968 -s 736
            1⤵
            • Program crash
            PID:3852
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 968 -ip 968
            1⤵
              PID:1668
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 968 -ip 968
              1⤵
                PID:4920
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 968 -ip 968
                1⤵
                  PID:740
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 968 -ip 968
                  1⤵
                    PID:1856
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 968 -ip 968
                    1⤵
                      PID:5064
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 968 -ip 968
                      1⤵
                        PID:400
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 968 -ip 968
                        1⤵
                          PID:2968
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 968 -ip 968
                          1⤵
                            PID:4740
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 968 -ip 968
                            1⤵
                              PID:1948
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 608 -p 968 -ip 968
                              1⤵
                                PID:1548
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 624 -p 968 -ip 968
                                1⤵
                                  PID:4060
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 632 -p 968 -ip 968
                                  1⤵
                                    PID:1096
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 968 -ip 968
                                    1⤵
                                      PID:4640
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 968 -ip 968
                                      1⤵
                                        PID:1428
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 640 -p 968 -ip 968
                                        1⤵
                                          PID:996

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\K4zi9bL.xml

                                          Filesize

                                          1KB

                                          MD5

                                          c02cac90f3405ec8763c1201a15f87a7

                                          SHA1

                                          9c18df18eaa09291c38c0d1b49ff19a7a0fe12fe

                                          SHA256

                                          f29e941e8da650ba0ae81c3f5012c5fa914b8bda15dbd06e919c03c678e0dffa

                                          SHA512

                                          c4896b3792a54831e33bfc7d145a1639e4e721769e8394beda001b7b04e294c89eeb5d5ab34d40fc02c9f834cf4c6322bce78d69e488915d52ef4adf697138ce

                                        • C:\Users\Admin\AppData\Local\Temp\b75093321664bd4bf0cafd5cb368090f.exe

                                          Filesize

                                          364KB

                                          MD5

                                          363ab429e5f6a53500a58565f9e52a6d

                                          SHA1

                                          e00b86d40a2a3a83e6cdffc4121e6f3c94648ea8

                                          SHA256

                                          bc2b2d1a7bd9647281328e19b5eb16567783269dd1bc5a54d24d0d04974daec3

                                          SHA512

                                          f198de5a9d0fa874444e6b4cdc47a2f0f5ed7944411ff9e906016c7d6800c0829e71f0f97e035b0cb3ec28e5461b6bdf2b057b4fe95d1e1155b96661e282df38

                                        • memory/968-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/968-21-0x0000000025060000-0x00000000250DE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/968-23-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/968-22-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/968-32-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/2620-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/2620-4-0x0000000001720000-0x000000000179E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/2620-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/2620-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB