Overview

overview

10

Static

static

5

bec20f4317...8e.exe

windows7-x64

10

bec20f4317...8e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10-03-2024 13:47

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General

  • Target

    bec20f4317ac6271699ed7ea481ba08e.exe

  • Size

    512KB

  • MD5

    bec20f4317ac6271699ed7ea481ba08e

  • SHA1

    96904f644b432df311e5d3a5008a5f5b9d3da75a

  • SHA256

    65a1e1711a1f7e00883a4e65ae3bd39eb3adbb73e261c37182f7b25195322ec8

  • SHA512

    1861e2b75f5a4ec13f2c7a250ad5557371428da0bb446513046d039ba3d1cd6f1cbb5866c64c28203db78e2a71dce9c00e5be26cd56b4a7d90a5c0dfe7e83059

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj63:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5M

Score
10/10
evasionpersistencespywarestealertrojan

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • Windows security bypass 2 TTPs 5 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Windows security modification 2 TTPs 6 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
    persistence
  • AutoIT Executable 5 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bec20f4317ac6271699ed7ea481ba08e.exe
    "C:\Users\Admin\AppData\Local\Temp\bec20f4317ac6271699ed7ea481ba08e.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1176
    • C:\Windows\SysWOW64\ucvzfjwrvg.exe
      ucvzfjwrvg.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\SysWOW64\lymrxwhw.exe
        C:\Windows\system32\lymrxwhw.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3028
    • C:\Windows\SysWOW64\mtnbluvxhfiaxsl.exe
      mtnbluvxhfiaxsl.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2504
    • C:\Windows\SysWOW64\lymrxwhw.exe
      lymrxwhw.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2508
    • C:\Windows\SysWOW64\fvpbotomzyxjj.exe
      fvpbotomzyxjj.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2644
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2356
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1368

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
      Filesize

      20KB

      MD5

      5a0105b402798e874ef52e1a1bdbb37e

      SHA1

      00393a653b7850c704963cade4e0f7ce99cea8fb

      SHA256

      16df45f0221e3f30c5dfb824a78ed488b482ab386235324b5db65825d8839b7c

      SHA512

      e5535afd771921179d201f2e34cdcab159ec5ad01e8af0259473cc613f8fe4e25391fb9dd579e23bb7a461c925d424fcf7f48901a06174c62672c3c0470dcdd3

      Download Submit

    • C:\Windows\SysWOW64\mtnbluvxhfiaxsl.exe
      Filesize

      512KB

      MD5

      be2e8550ca923d1f086d9ef3cbe0392c

      SHA1

      e4d211e2cb33e32c3b55027f7b491b5d8b537f14

      SHA256

      67f58cdb6b5a9a3bb7bf0050d71f48dbe02eeea2996220914aa9b24ed68d8ad4

      SHA512

      82c8980b6c9e622e31b35d86b60b784f81a6b83d0f9393fc2ba236f23d3180fc41c78956961bc27399f89ad71e38288781f5eecd3ef44dc6d090fa9273c7d29c

      Download Submit

    • C:\Windows\mydoc.rtf
      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

      Download Submit

    • \Windows\SysWOW64\fvpbotomzyxjj.exe
      Filesize

      512KB

      MD5

      898698d9e6cf2a9748f5e12cb3c705ff

      SHA1

      99ca2fcf780c17f9f827118ea7e3b4a0856dd8d6

      SHA256

      b57f61370711c8180c3bab0e3a0433fdfc8e047165500c20c45dbad10fb60821

      SHA512

      a0ad020d867e1b661c579d2720bd86dbc655e83671c05a54c8401cf779b0302c889ec8a034bbad43bacef0e57f73171d9e9e74bba0243c7fe70daa12ee12283a

      Download Submit

    • \Windows\SysWOW64\lymrxwhw.exe
      Filesize

      512KB

      MD5

      da40fbe03a42818d4a73e61e0eafe8f3

      SHA1

      63ce889bba62d1477c87f2cfd97207b0b7756df7

      SHA256

      cda86434c5b4434a4a57497168a9027d42a74036c110b3c9f4b3c5a04df1e00b

      SHA512

      306b88fee098dc742c6cbddc85ded23bb3ffd46fd2cfb2cbc88159298c3f36f340e7a6c216925fa68eacfb9ee826f4c956f8b580d9902a15d09091c191ed5870

      Download Submit

    • \Windows\SysWOW64\ucvzfjwrvg.exe
      Filesize

      512KB

      MD5

      1c7d22431b1cfeb044453380bfbfddd5

      SHA1

      fb691d58af06d6945000c9c1b4ba7734f1951e62

      SHA256

      90dde72252d381284637ae8d94300fbc7e2e8c836c83098d672aca05b9a478f7

      SHA512

      5a772006751f20fb51a118bbe5626330a33685b144d8528ed1f10ddf401e04f3b68e86060a91c3ecd5a187eb4272f59502ee200c0c699ae781ff13726559c4e3

      Download Submit

    • memory/1176-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

      Download

    • memory/2356-45-0x000000002F261000-0x000000002F262000-memory.dmp

      Filesize

      4KB

      Download

    • memory/2356-46-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2356-47-0x00000000715DD000-0x00000000715E8000-memory.dmp

      Filesize

      44KB

      Download

    • memory/2356-74-0x00000000715DD000-0x00000000715E8000-memory.dmp

      Filesize

      44KB

      Download

    • memory/2356-95-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download