Analysis

  • max time kernel
    142s
  • 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
    22/12/2023, 02:44

General

  • Target

    553e1bb1ea96a5f068952c1f1dd4887e.exe

  • Size

    501KB

  • MD5

    553e1bb1ea96a5f068952c1f1dd4887e

  • SHA1

    31f992184873beb1de0c16985a26eccf182e8559

  • SHA256

    94b2c0e17db53941da8ef442c0a70d5c845767d4ebdd56aa949a3c3f7088ae3d

  • SHA512

    0b2048886a17ce00ec25c3b419523405239651a92903794712d2525e9089d36b70f77db58d7abadfb8fef7d5352ec6458d5a7777df9efed1eda9c563d85ed947

  • SSDEEP

    12288:jwT7c7PeyT4fkoaSAJOs7vu1+1ncApn8/bU:W7c7GG4Moh7i21+dr8/

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\553e1bb1ea96a5f068952c1f1dd4887e.exe
    "C:\Users\Admin\AppData\Local\Temp\553e1bb1ea96a5f068952c1f1dd4887e.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1332
    • C:\Users\Admin\AppData\Local\Temp\553e1bb1ea96a5f068952c1f1dd4887e.exe
      C:\Users\Admin\AppData\Local\Temp\553e1bb1ea96a5f068952c1f1dd4887e.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:928
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\553e1bb1ea96a5f068952c1f1dd4887e.exe" /TN 91YuFL8m6860 /F
        3⤵
        • Creates scheduled task(s)
        PID:4348
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN 91YuFL8m6860 > C:\Users\Admin\AppData\Local\Temp\mlODT.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2844
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN 91YuFL8m6860
          4⤵
            PID:3308
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 604
          3⤵
          • Program crash
          PID:1532
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 628
          3⤵
          • Program crash
          PID:3180
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 636
          3⤵
          • Program crash
          PID:4192
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 736
          3⤵
          • Program crash
          PID:876
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 760
          3⤵
          • Program crash
          PID:1432
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 632
          3⤵
          • Program crash
          PID:3160
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1484
          3⤵
          • Program crash
          PID:2424
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1920
          3⤵
          • Program crash
          PID:2304
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 2148
          3⤵
          • Program crash
          PID:3904
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1936
          3⤵
          • Program crash
          PID:2260
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1976
          3⤵
          • Program crash
          PID:5040
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1960
          3⤵
          • Program crash
          PID:2312
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 2004
          3⤵
          • Program crash
          PID:5052
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1980
          3⤵
          • Program crash
          PID:4664
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 2188
          3⤵
          • Program crash
          PID:3268
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 1976
          3⤵
          • Program crash
          PID:3152
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 2000
          3⤵
          • Program crash
          PID:1684
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 752
          3⤵
          • Program crash
          PID:2260
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 928 -ip 928
      1⤵
        PID:2380
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 928 -ip 928
        1⤵
          PID:4444
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 928 -ip 928
          1⤵
            PID:2432
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 928 -ip 928
            1⤵
              PID:3564
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 928 -ip 928
              1⤵
                PID:2012
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 928 -ip 928
                1⤵
                  PID:3616
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 928 -ip 928
                  1⤵
                    PID:3448
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 928 -ip 928
                    1⤵
                      PID:1628
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 928 -ip 928
                      1⤵
                        PID:1588
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 628 -p 928 -ip 928
                        1⤵
                          PID:1892
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 928 -ip 928
                          1⤵
                            PID:1860
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 928 -ip 928
                            1⤵
                              PID:1940
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 928 -ip 928
                              1⤵
                                PID:4000
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 928 -ip 928
                                1⤵
                                  PID:4784
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 928 -ip 928
                                  1⤵
                                    PID:396
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 928 -ip 928
                                    1⤵
                                      PID:3384
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 928 -ip 928
                                      1⤵
                                        PID:1344
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 928 -ip 928
                                        1⤵
                                          PID:4472

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\553e1bb1ea96a5f068952c1f1dd4887e.exe

                                          Filesize

                                          384KB

                                          MD5

                                          3a23f409e2ddefca6d7fc9b2cb9c8537

                                          SHA1

                                          90a702ded0015d8a2c9596cdb16d936abdf389c6

                                          SHA256

                                          7c74c3e6a43f27a1180eeba4cc18eba503adc87b8c8bcf51415f706be7fd3c38

                                          SHA512

                                          2665b4b755d542063dacc352e4a0d77d052594c4854eea97a8e51123913ad55e6c1ec24a3f7fd02cee763936f08a90bd53994df5d40717684842e5e62ee6cab9

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

                                          Filesize

                                          1KB

                                          MD5

                                          a0318c2ee1da3865468ccc350c89af5d

                                          SHA1

                                          42a69d8e5f47255f19d7a3bf2ddb7569fcf4b00a

                                          SHA256

                                          59c57563b9a68bba659d4185906f5213c954eb65fc75f2cba7d320d3eec50ecd

                                          SHA512

                                          99a22fefbfbce120f2fd04df690e2e4a0f6fbc841901cc3b7789c4471896e5e1cf3a274dd6ef530392db3ca48ec92eb98d9cc492d76625d67e3ef6b5f15c1c41

                                        • memory/928-14-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/928-17-0x0000000001720000-0x000000000179E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/928-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/928-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/928-41-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/1332-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/1332-3-0x0000000001730000-0x00000000017AE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/1332-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/1332-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB