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Analysis

  • max time kernel
    145s
  • max time network
    149s
  • 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, 14:15

General

  • Target

    bc02d90763f0b879a7c15d6c3e0d032e.exe

  • Size

    3.9MB

  • MD5

    bc02d90763f0b879a7c15d6c3e0d032e

  • SHA1

    d0a796ea5614da416eb88780f6783b308da7a875

  • SHA256

    d800e488f259a78fc423f62f66b5ae89f632b6e97ffcb826853a93bf1bfd5130

  • SHA512

    e4dc547a8a84343c8466e7ff8e66f6eaf289acde8c6bee9bf4b600d2d56177451458a1c0374e4bed3e1da9564a7773a6a082f3c180aea5562067015f21cfad3e

  • SSDEEP

    98304:K4XTT2lNL/Ecakcibiqhd+UhQdiqcakcibiqhtnr+ckuwkteNKUWcakcibiqhd+4:DXTT2PEdlirzJoiqdlirvTwTUNdlirz9

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\bc02d90763f0b879a7c15d6c3e0d032e.exe
    "C:\Users\Admin\AppData\Local\Temp\bc02d90763f0b879a7c15d6c3e0d032e.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2248
    • C:\Users\Admin\AppData\Local\Temp\bc02d90763f0b879a7c15d6c3e0d032e.exe
      C:\Users\Admin\AppData\Local\Temp\bc02d90763f0b879a7c15d6c3e0d032e.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:3464
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\bc02d90763f0b879a7c15d6c3e0d032e.exe" /TN nMQUF5AE494a /F
        3⤵
        • Creates scheduled task(s)
        PID:208
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN nMQUF5AE494a > C:\Users\Admin\AppData\Local\Temp\5PuVV.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4264
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN nMQUF5AE494a
          4⤵
            PID:3384
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 608
          3⤵
          • Program crash
          PID:4600
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 648
          3⤵
          • Program crash
          PID:840
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 656
          3⤵
          • Program crash
          PID:4512
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 652
          3⤵
          • Program crash
          PID:2892
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 736
          3⤵
          • Program crash
          PID:2756
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 780
          3⤵
          • Program crash
          PID:1136
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1456
          3⤵
          • Program crash
          PID:3552
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1908
          3⤵
          • Program crash
          PID:2408
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 2148
          3⤵
          • Program crash
          PID:2512
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 2096
          3⤵
          • Program crash
          PID:2768
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1924
          3⤵
          • Program crash
          PID:1204
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1980
          3⤵
          • Program crash
          PID:2404
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1916
          3⤵
          • Program crash
          PID:2916
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1956
          3⤵
          • Program crash
          PID:3216
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1912
          3⤵
          • Program crash
          PID:2260
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1916
          3⤵
          • Program crash
          PID:4928
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1924
          3⤵
          • Program crash
          PID:3320
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 620
          3⤵
          • Program crash
          PID:4560
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3464 -ip 3464
      1⤵
        PID:4852
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3464 -ip 3464
        1⤵
          PID:1704
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3464 -ip 3464
          1⤵
            PID:2580
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3464 -ip 3464
            1⤵
              PID:2596
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3464 -ip 3464
              1⤵
                PID:3244
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3464 -ip 3464
                1⤵
                  PID:1512
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3464 -ip 3464
                  1⤵
                    PID:2120
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3464 -ip 3464
                    1⤵
                      PID:4324
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3464 -ip 3464
                      1⤵
                        PID:4260
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3464 -ip 3464
                        1⤵
                          PID:4284
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3464 -ip 3464
                          1⤵
                            PID:668
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3464 -ip 3464
                            1⤵
                              PID:4712
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3464 -ip 3464
                              1⤵
                                PID:4816
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3464 -ip 3464
                                1⤵
                                  PID:3456
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 3464 -ip 3464
                                  1⤵
                                    PID:868
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3464 -ip 3464
                                    1⤵
                                      PID:1592
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 3464 -ip 3464
                                      1⤵
                                        PID:3804
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3464 -ip 3464
                                        1⤵
                                          PID:5000

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\5PuVV.xml

                                          Filesize

                                          1KB

                                          MD5

                                          9b5e7fd0ee76df40b36f3ea65f093849

                                          SHA1

                                          347622307711b4905dfa12256457efee97c7239b

                                          SHA256

                                          ce990afd4c8dba996a5579e3e8bfd882e009245677b6eae17fefc40210d388eb

                                          SHA512

                                          5156ead702277346e225f569fdae3970a05b47ae190968326f8b64324ad5e51a9659854586d62c68511727108dddfa8425cb4c620cfd4222d6049801e4fc86b9

                                        • C:\Users\Admin\AppData\Local\Temp\bc02d90763f0b879a7c15d6c3e0d032e.exe

                                          Filesize

                                          3.9MB

                                          MD5

                                          12b6f64273d5f0f1259986603e305a2d

                                          SHA1

                                          c184dd54f972d888df3f79d5da32624312c1f3d9

                                          SHA256

                                          3f0c4c7a6a3fc963514d9339920facdf7a8b4d845c7ede3f5adb223dbc7cca95

                                          SHA512

                                          28f843bd6ba790fb1365d5d074495c965c66a55bd1842b8be815c26ee0806ee1756bbc61863299beb51eef2cac1a8b25eccd2e6c8c56b77d60a2fe69782b08f9

                                        • memory/2248-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/2248-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/2248-5-0x0000000024FE0000-0x000000002505E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/2248-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/3464-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/3464-16-0x0000000001720000-0x000000000179E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/3464-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/3464-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/3464-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB