Analysis

  • max time kernel
    146s
  • 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
    22/12/2023, 04:19

General

  • Target
    62901b7336f327eb2605ba9ad3343b40.exe
  • Size 3.0MB
  • Sample231222-exsgladafk
  • SHA256 257f4c8e62915d60cafa6f5e3039045b9a2bb30ad7bf68e74d56c17d5b84ffda
  • MD5 SHA1 SHA512 SSDEEP
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 19 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\62901b7336f327eb2605ba9ad3343b40.exe
    "C:\Users\Admin\AppData\Local\Temp\62901b7336f327eb2605ba9ad3343b40.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:3876
    • C:\Users\Admin\AppData\Local\Temp\62901b7336f327eb2605ba9ad3343b40.exe
      C:\Users\Admin\AppData\Local\Temp\62901b7336f327eb2605ba9ad3343b40.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:1764
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\62901b7336f327eb2605ba9ad3343b40.exe" /TN BLiB1zkTf55f /F
        3⤵
        • Creates scheduled task(s)
        PID:1060
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN BLiB1zkTf55f > C:\Users\Admin\AppData\Local\Temp\hBHCwi5rs.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1456
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 604
        3⤵
        • Program crash
        PID:976
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 628
        3⤵
        • Program crash
        PID:3836
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 636
        3⤵
        • Program crash
        PID:4856
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 736
        3⤵
        • Program crash
        PID:2344
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 752
        3⤵
        • Program crash
        PID:3992
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 812
        3⤵
        • Program crash
        PID:2068
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1464
        3⤵
        • Program crash
        PID:4488
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1912
        3⤵
        • Program crash
        PID:116
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 2148
        3⤵
        • Program crash
        PID:2164
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1932
        3⤵
        • Program crash
        PID:4792
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1972
        3⤵
        • Program crash
        PID:1752
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 2028
        3⤵
        • Program crash
        PID:4308
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1912
        3⤵
        • Program crash
        PID:536
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1956
        3⤵
        • Program crash
        PID:3996
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1912
        3⤵
        • Program crash
        PID:3252
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 1916
        3⤵
        • Program crash
        PID:764
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 2128
        3⤵
        • Program crash
        PID:1224
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 2172
        3⤵
        • Program crash
        PID:3236
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1764 -s 624
        3⤵
        • Program crash
        PID:3512
  • C:\Windows\SysWOW64\schtasks.exe
    schtasks.exe /Query /XML /TN BLiB1zkTf55f
    1⤵
      PID:3940
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1764 -ip 1764
      1⤵
        PID:1600
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1764 -ip 1764
        1⤵
          PID:3276
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1764 -ip 1764
          1⤵
            PID:1892
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1764 -ip 1764
            1⤵
              PID:4112
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1764 -ip 1764
              1⤵
                PID:1116
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1764 -ip 1764
                1⤵
                  PID:2496
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1764 -ip 1764
                  1⤵
                    PID:4988
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1764 -ip 1764
                    1⤵
                      PID:3864
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1764 -ip 1764
                      1⤵
                        PID:2544
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1764 -ip 1764
                        1⤵
                          PID:2824
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1764 -ip 1764
                          1⤵
                            PID:452
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1764 -ip 1764
                            1⤵
                              PID:4424
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1764 -ip 1764
                              1⤵
                                PID:3264
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1764 -ip 1764
                                1⤵
                                  PID:1868
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1764 -ip 1764
                                  1⤵
                                    PID:1060
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1764 -ip 1764
                                    1⤵
                                      PID:1592
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1764 -ip 1764
                                      1⤵
                                        PID:4056
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1764 -ip 1764
                                        1⤵
                                          PID:456
                                        • C:\Windows\SysWOW64\WerFault.exe
                                          C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1764 -ip 1764
                                          1⤵
                                            PID:4308

                                          Network

                                                MITRE ATT&CK Enterprise v15

                                                Replay Monitor

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                                                Downloads

                                                62901b7336f327eb2605ba9ad3343b40.exe

                                                • Path C:\Users\Admin\AppData\Local\Temp\62901b7336f327eb2605ba9ad3343b40.exe
                                                • Size 37KB
                                                • SHA256 ad177aa96f8d089694ad4a5e3b4def3f94c89caa19ab97bb915258d8e7d9c323
                                                • MD5 SHA1 SHA512 SSDEEP

                                                hBHCwi5rs.xml

                                                • Path C:\Users\Admin\AppData\Local\Temp\hBHCwi5rs.xml
                                                • Size 1KB
                                                • SHA256 80dfb8b80c6641fd71059f6c9b8244b037c052a8f26d44c07ded7f74411a6436
                                                • MD5 SHA1 SHA512

                                                memory/1764-15-0x0000000000400000-0x000000000065C000-memory.dmp

                                                memory/1764-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                                                memory/1764-18-0x0000000024030000-0x00000000240AE000-memory.dmp

                                                memory/1764-23-0x0000000000400000-0x000000000045B000-memory.dmp

                                                memory/1764-32-0x0000000000400000-0x000000000065C000-memory.dmp

                                                memory/3876-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                                memory/3876-1-0x0000000000400000-0x000000000046B000-memory.dmp

                                                memory/3876-5-0x0000000001660000-0x00000000016DE000-memory.dmp

                                                memory/3876-13-0x0000000000400000-0x000000000046B000-memory.dmp