Analysis

  • max time kernel
    141s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    22-12-2023 05:55

General

  • Target

    737c256bceb85ee3e8245739b76f9495.exe

  • Size

    3.9MB

  • MD5

    737c256bceb85ee3e8245739b76f9495

  • SHA1

    9fc66ccf6eca9d3211a55be47f0d8f9e040ecfa6

  • SHA256

    7c9bca86ea2bc52fc64d937ad04a198b74a048de8902d79a685a2591b3d7084b

  • SHA512

    bcb089bd6b6bfaef77d7f4441c328969be23f9ec24d131cb4c217501e6ac1aeaa5ed2cde916fb096d97b74f91ea57a14cc6ef5daf49ef24b1e156c8a5fc65a86

  • SSDEEP

    98304:uzbaitM27IELOcakcibiqhMbMgOn7n0bcakcibiqhxe64MhRirLccakcibiqhMbU:Eaim20YOdlirybMgOnkdlir2LMbicdlQ

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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
  • 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 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\737c256bceb85ee3e8245739b76f9495.exe
    "C:\Users\Admin\AppData\Local\Temp\737c256bceb85ee3e8245739b76f9495.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Users\Admin\AppData\Local\Temp\737c256bceb85ee3e8245739b76f9495.exe
      C:\Users\Admin\AppData\Local\Temp\737c256bceb85ee3e8245739b76f9495.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\737c256bceb85ee3e8245739b76f9495.exe" /TN x1iLRz9v069a /F
        3⤵
        • Creates scheduled task(s)
        PID:2588
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN x1iLRz9v069a > C:\Users\Admin\AppData\Local\Temp\opjPLb30j.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2948
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN x1iLRz9v069a
          4⤵
            PID:2776

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\737c256bceb85ee3e8245739b76f9495.exe

      Filesize

      441KB

      MD5

      b1d11e0e1878cba74f84f56e0e5eb16a

      SHA1

      9f9ae4bcd822ec098ca5a3dcb58b4121526e73ef

      SHA256

      af80617a5901e06fd3ef19c3e9cdcf5beabae2cb36bb6fa62306e35f6e4fe2b8

      SHA512

      d651db4a48bd05941192596c9491a46da119a413d466d114f4f8ba7c5ea019eff70f041cd6620c59a420f7e6441b5445470b74183b393da081d9019903d82c82

    • \Users\Admin\AppData\Local\Temp\737c256bceb85ee3e8245739b76f9495.exe

      Filesize

      495KB

      MD5

      a5e5523a20c108f6c8d93238c9409024

      SHA1

      0120ab8c1e58f9539860c0f2d70408853c131028

      SHA256

      64c751f82e77641f84f3f3b941a81bae75d1fcc89fc484b69eea4fd989237030

      SHA512

      9563323fb7fb512a6c0c11fd3d7be9cc73c6d7bd2eb67b3a7b2b0dd9d905afdb5da5c980ca4009c04306dfba7edf8b83e7c4538bfe87d689a44846b70be64956

    • memory/2212-15-0x0000000000400000-0x000000000046B000-memory.dmp

      Filesize

      428KB

    • memory/2212-1-0x0000000000400000-0x000000000046B000-memory.dmp

      Filesize

      428KB

    • memory/2212-3-0x0000000001660000-0x00000000016DE000-memory.dmp

      Filesize

      504KB

    • memory/2212-0-0x0000000000400000-0x000000000065C000-memory.dmp

      Filesize

      2.4MB

    • memory/2212-16-0x00000000236A0000-0x00000000238FC000-memory.dmp

      Filesize

      2.4MB

    • memory/2684-22-0x00000000001A0000-0x000000000021E000-memory.dmp

      Filesize

      504KB

    • memory/2684-27-0x00000000002C0000-0x000000000032B000-memory.dmp

      Filesize

      428KB

    • memory/2684-26-0x0000000000400000-0x000000000045B000-memory.dmp

      Filesize

      364KB

    • memory/2684-20-0x0000000000400000-0x000000000065C000-memory.dmp

      Filesize

      2.4MB

    • memory/2684-54-0x0000000000400000-0x000000000065C000-memory.dmp

      Filesize

      2.4MB