Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/02/2024, 08:20

General

  • Target

    a34f69f42c094e49d58fe79cc0cfd9a7.exe

  • Size

    2.0MB

  • MD5

    a34f69f42c094e49d58fe79cc0cfd9a7

  • SHA1

    0911ff6ee7b03808cf6b352b9eaa42f0ecd75937

  • SHA256

    5c9c5f7ab2b5c50b668bbd4568f0f1c109e4068a79e4a4b53e6677d51a60a5df

  • SHA512

    5095459ba79f39bc3659532accd61e1eb290564132b5a54efbf90b2d6ae66658306fb5ae4bfac5d8f0587df0a0498215df0b5d6e2fb702ea2dfa39503bb18ec6

  • SSDEEP

    49152:zaFZrwpdyMcN+9zWFULG+jMD1ObYzd3/dJro9cN+9zWFULG+:zGMpdyBA9zyULG+QD1ObYz9ouA9zyULp

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 1 IoCs
  • Program crash 4 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\a34f69f42c094e49d58fe79cc0cfd9a7.exe
    "C:\Users\Admin\AppData\Local\Temp\a34f69f42c094e49d58fe79cc0cfd9a7.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2948
    • C:\Users\Admin\AppData\Local\Temp\a34f69f42c094e49d58fe79cc0cfd9a7.exe
      C:\Users\Admin\AppData\Local\Temp\a34f69f42c094e49d58fe79cc0cfd9a7.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\a34f69f42c094e49d58fe79cc0cfd9a7.exe" /TN zgcK1bZG0ed3 /F
        3⤵
        • Creates scheduled task(s)
        PID:2572
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN zgcK1bZG0ed3 > C:\Users\Admin\AppData\Local\Temp\cWnJU.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1300
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN zgcK1bZG0ed3
          4⤵
            PID:3548
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 608
          3⤵
          • Program crash
          PID:3328
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 628
          3⤵
          • Program crash
          PID:4704
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 636
          3⤵
          • Program crash
          PID:4936
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 736
          3⤵
          • Program crash
          PID:4304
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2684 -ip 2684
      1⤵
        PID:5044
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2684 -ip 2684
        1⤵
          PID:4420
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2684 -ip 2684
          1⤵
            PID:1456
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2684 -ip 2684
            1⤵
              PID:3016

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\a34f69f42c094e49d58fe79cc0cfd9a7.exe

                    Filesize

                    2.0MB

                    MD5

                    5522f25a980cf198d45a9576ac815189

                    SHA1

                    ddc9a0f36e8c27b1a2890fa37a6ca1f6ee26219f

                    SHA256

                    ab8fdd9592620ad7b7e0420720e1b29cf2cda0bf2b5a46591d20dbbbe212c45a

                    SHA512

                    5e1f2be66c659f5728debd5e2dd6dd61e8d81d3dffd85142121cd536a11879762df66c85ca660e3085b225c0c039f2c87e558fe4604891d4e52cff1934f731c8

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

                    Filesize

                    1KB

                    MD5

                    1fc70f3405da9d903be36989a42ef2e7

                    SHA1

                    8f7c5f05de295a6912cd7f8a4d24e5b332b04eb1

                    SHA256

                    564cc70d1e86b741da4cc428d006767ba8e306c8393bd8fd749f558cf7788144

                    SHA512

                    1d44528a2f076fa56406376d2669b02eb8e478be3cd0147423bb05ba1782403340463089bf7681cb58350b91a4b08ea6656c1322c664271d90f78bddfcee455c

                  • memory/2684-13-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB

                  • memory/2684-16-0x0000000001660000-0x00000000016DE000-memory.dmp

                    Filesize

                    504KB

                  • memory/2684-21-0x0000000000470000-0x00000000004DB000-memory.dmp

                    Filesize

                    428KB

                  • memory/2684-22-0x0000000000400000-0x000000000045B000-memory.dmp

                    Filesize

                    364KB

                  • memory/2684-40-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB

                  • memory/2948-0-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB

                  • memory/2948-3-0x0000000025030000-0x00000000250AE000-memory.dmp

                    Filesize

                    504KB

                  • memory/2948-1-0x0000000000400000-0x000000000046B000-memory.dmp

                    Filesize

                    428KB

                  • memory/2948-39-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB