Analysis

  • max time kernel
    136s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/01/2024, 06:30

General

  • Target

    4d9739420e5b8e9c561e5b65df5760f0.exe

  • Size

    3.9MB

  • MD5

    4d9739420e5b8e9c561e5b65df5760f0

  • SHA1

    8272e7324e84dce3f5e9933f68904302add96108

  • SHA256

    855d385e6f772c823366b8b0ac965b0e165b7ea4188b3f7af7f267d2beeedbdc

  • SHA512

    491944aa95b165d49db0b98d9f69e620723b2a89ff62dfc6cc186a8b5df0c85e1ef6d30709b5e100fa4e6f8c186a8083e64096726fa221c7a71a5bf1a4b7c42c

  • SSDEEP

    98304:hzSt2+A9zyULG+0dKz4DpvA9zyULG+Mq7yYfI26xXuhqPuCA9zyULG+0dKz4DpvQ:YOzLq7ae4zLq7q7hd6duhKizLq7ae4z+

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\4d9739420e5b8e9c561e5b65df5760f0.exe
    "C:\Users\Admin\AppData\Local\Temp\4d9739420e5b8e9c561e5b65df5760f0.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2544
    • C:\Users\Admin\AppData\Local\Temp\4d9739420e5b8e9c561e5b65df5760f0.exe
      C:\Users\Admin\AppData\Local\Temp\4d9739420e5b8e9c561e5b65df5760f0.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\4d9739420e5b8e9c561e5b65df5760f0.exe" /TN 91YuFL8m6860 /F
        3⤵
        • Creates scheduled task(s)
        PID:4324
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN 91YuFL8m6860 > C:\Users\Admin\AppData\Local\Temp\qI1KY.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1560
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN 91YuFL8m6860
          4⤵
            PID:1336
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 604
          3⤵
          • Program crash
          PID:2232
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 636
          3⤵
          • Program crash
          PID:3544
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 604
          3⤵
          • Program crash
          PID:3024
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 640
          3⤵
          • Program crash
          PID:3552
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 640
          3⤵
          • Program crash
          PID:844
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 724
          3⤵
          • Program crash
          PID:1700
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1468
          3⤵
          • Program crash
          PID:3440
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1948
          3⤵
          • Program crash
          PID:956
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 2148
          3⤵
          • Program crash
          PID:1340
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1908
          3⤵
          • Program crash
          PID:4024
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1952
          3⤵
          • Program crash
          PID:1276
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1944
          3⤵
          • Program crash
          PID:3360
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1908
          3⤵
          • Program crash
          PID:628
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1956
          3⤵
          • Program crash
          PID:2960
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1952
          3⤵
          • Program crash
          PID:1636
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1956
          3⤵
          • Program crash
          PID:896
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 1988
          3⤵
          • Program crash
          PID:416
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2648 -s 632
          3⤵
          • Program crash
          PID:2824
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2648 -ip 2648
      1⤵
        PID:804
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2648 -ip 2648
        1⤵
          PID:756
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 2648 -ip 2648
          1⤵
            PID:456
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2648 -ip 2648
            1⤵
              PID:4288
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2648 -ip 2648
              1⤵
                PID:3888
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2648 -ip 2648
                1⤵
                  PID:4960
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 196 -p 2648 -ip 2648
                  1⤵
                    PID:4204
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2648 -ip 2648
                    1⤵
                      PID:2936
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2648 -ip 2648
                      1⤵
                        PID:3028
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 2648 -ip 2648
                        1⤵
                          PID:4260
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2648 -ip 2648
                          1⤵
                            PID:664
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2648 -ip 2648
                            1⤵
                              PID:220
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2648 -ip 2648
                              1⤵
                                PID:4312
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2648 -ip 2648
                                1⤵
                                  PID:1476
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2648 -ip 2648
                                  1⤵
                                    PID:3888
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2648 -ip 2648
                                    1⤵
                                      PID:3648
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2648 -ip 2648
                                      1⤵
                                        PID:2992
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 2648 -ip 2648
                                        1⤵
                                          PID:4728

                                        Network

                                              MITRE ATT&CK Enterprise v15

                                              Replay Monitor

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                                              Downloads

                                              • C:\Users\Admin\AppData\Local\Temp\4d9739420e5b8e9c561e5b65df5760f0.exe

                                                Filesize

                                                3.9MB

                                                MD5

                                                9679886066257111a71cf0185604145a

                                                SHA1

                                                5851781813d6d594f849f68faeee795d15180a3d

                                                SHA256

                                                e8527ddc78d589004d7a24c0d03eaf18216ed52e2c1266f2383d9f49811dc2f2

                                                SHA512

                                                a47ffc5d036642c46058ce32485530566d7a1e93d94ee380532c5fdf2e6f5adad1061492ac82d1f3120c4131392a09dfa6021caaf90f9f0671088c239e615f75

                                              • C:\Users\Admin\AppData\Local\Temp\qI1KY.xml

                                                Filesize

                                                1KB

                                                MD5

                                                37b2350d97809fd4b5403146e5189951

                                                SHA1

                                                ee2d40120eeeadc65c6d51af0ab697f0c239f050

                                                SHA256

                                                ab3b09c92fba767366b28ece8d707d9be85d1d0f2671856a06bbccc87ab5c543

                                                SHA512

                                                3d6af9715a32aafa2d0b2b33a1f3c5c4f8896b45c9533b5c7958f60898215283e08b1b81044ee84ed9dcbcae75239f1f67ab80b426f80a9e4bd7f3e48d3b3047

                                              • memory/2544-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                                Filesize

                                                2.4MB

                                              • memory/2544-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                                Filesize

                                                428KB

                                              • memory/2544-4-0x0000000025050000-0x00000000250CE000-memory.dmp

                                                Filesize

                                                504KB

                                              • memory/2544-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                                Filesize

                                                428KB

                                              • memory/2648-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                                Filesize

                                                2.4MB

                                              • memory/2648-18-0x0000000025020000-0x000000002509E000-memory.dmp

                                                Filesize

                                                504KB

                                              • memory/2648-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                                Filesize

                                                428KB

                                              • memory/2648-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                                Filesize

                                                364KB

                                              • memory/2648-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                                Filesize

                                                2.4MB