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Analysis

  • max time kernel
    122s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 20:01

General

  • Target

    39eca13489254fae979125db56b92baa.exe

  • Size

    75KB

  • MD5

    39eca13489254fae979125db56b92baa

  • SHA1

    85aea2864cbe849bbd73ae32075ab9da284dda70

  • SHA256

    fe69f08d2f2832770063a008acd8c542b0f334bffd123b5b45dd5a8107da0235

  • SHA512

    5cb2d8235693d49b37e72678e96a5ab05d20ca0e506a9b7aa1f7f44d822f98b8fa5a64f8cd109b88e2fc08aab99d99be098729d99d2a2ef54d92ff2c998b6f17

  • SSDEEP

    768:QTQodfJF4+PJjPiiMAoGrx+G3twHzVlvKF9ZQk5NAq2OSGNPgzVKZ75TIIx/65uM:Zodf7+8Q0Aq2+1g5QTSuM9fiS

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Modifies registry class 56 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\39eca13489254fae979125db56b92baa.exe
    "C:\Users\Admin\AppData\Local\Temp\39eca13489254fae979125db56b92baa.exe"
    1⤵
    • Installs/modifies Browser Helper Object
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2908
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s "C:\Users\Admin\AppData\Roaming\Microsoft\BBDNS.Dll
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:2696
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s /u "C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
      2⤵
      • Modifies registry class
      PID:2808
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s /u "C:\PROGRA~2\MICROS~1\Office14\URLREDIR.DLL
      2⤵
      • Modifies registry class
      PID:2588
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 /s /u "C:\PROGRA~2\MICROS~1\Office14\URLREDIR.DLL
      2⤵
        PID:2536
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\39eca13489254fae979125db56b92baa.exe
        2⤵
        • Deletes itself
        PID:2544

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\BBDNS.Dll

      Filesize

      50KB

      MD5

      c437ddd7bd995bc7534efdd9c804e042

      SHA1

      61cee341d82af3eba2f66629522c1f066ce8aa1b

      SHA256

      1244e7c70904abaa07773eef41566da84eb81bbf18f95124f4991d41a05e593f

      SHA512

      0bfcd744babec6493e9cbda8b5bf25c41d0e546dfc1f9495d8f41ca7f4e7044245159c8cc122b4807ca2677250954288cfe8b70bfe22a47c12fc9564f1d309ad

    • memory/2696-5-0x0000000000130000-0x0000000000140000-memory.dmp

      Filesize

      64KB

    • memory/2908-6-0x0000000000400000-0x0000000000416000-memory.dmp

      Filesize

      88KB