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Analysis

  • max time kernel
    250s
  • max time network
    332s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    03/12/2022, 18:51

General

  • Target

    fbdfee5e766033327b05f575c3cf456fa4f71ec39b1bd5ddbfd0dcc69a73bd81.exe

  • Size

    685KB

  • MD5

    90d83c7d3477803d847ce89613b035d6

  • SHA1

    5eac96da556f831ed687fbcd78549e6c476ffe61

  • SHA256

    fbdfee5e766033327b05f575c3cf456fa4f71ec39b1bd5ddbfd0dcc69a73bd81

  • SHA512

    7eed2ee49fa2285f78fcae0175c5bea0fad19839713ba94ec6b2adcdb3ab736f69cb1ed6de4936d18a25a9ca3eca77b7bcc469f2ed534389155bd2e9bf14bf06

  • SSDEEP

    12288:rXi1xcZVNe+keYaOeoG7FCibEPVMVWmQYfIjBKEZa+rUlynwMEcR157N59lU98:NdejCOeoQHbEPVMVWmQYgjB115A

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fbdfee5e766033327b05f575c3cf456fa4f71ec39b1bd5ddbfd0dcc69a73bd81.exe
    "C:\Users\Admin\AppData\Local\Temp\fbdfee5e766033327b05f575c3cf456fa4f71ec39b1bd5ddbfd0dcc69a73bd81.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:520
    • C:\Windows\SysWOW64\InternetExplorer.exe
      "C:\Windows\System32\InternetExplorer.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      PID:1372
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 520 -s 640
      2⤵
      • Program crash
      PID:1896

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\InternetExplorer.exe

    Filesize

    685KB

    MD5

    90d83c7d3477803d847ce89613b035d6

    SHA1

    5eac96da556f831ed687fbcd78549e6c476ffe61

    SHA256

    fbdfee5e766033327b05f575c3cf456fa4f71ec39b1bd5ddbfd0dcc69a73bd81

    SHA512

    7eed2ee49fa2285f78fcae0175c5bea0fad19839713ba94ec6b2adcdb3ab736f69cb1ed6de4936d18a25a9ca3eca77b7bcc469f2ed534389155bd2e9bf14bf06

  • C:\Windows\SysWOW64\explorer.ini

    Filesize

    54B

    MD5

    345015190a6467a6d5e1c1f91ffe25d9

    SHA1

    5d7bdb44a6bc46d3dc5922eefee24880e46b6031

    SHA256

    fa872975e8a137600775446a8f0cc60876e2e984783fca1f3e4d0e847e838cd9

    SHA512

    e11e22b63af0ba20d9abd5d72d24ff70cba86229b9221f785df4a1b4b311c9b505a63a01f395403be94a2a70c4792efee8c50b674fa301804cd6272bd5ed5269

  • \Windows\SysWOW64\InternetExplorer.exe

    Filesize

    685KB

    MD5

    90d83c7d3477803d847ce89613b035d6

    SHA1

    5eac96da556f831ed687fbcd78549e6c476ffe61

    SHA256

    fbdfee5e766033327b05f575c3cf456fa4f71ec39b1bd5ddbfd0dcc69a73bd81

    SHA512

    7eed2ee49fa2285f78fcae0175c5bea0fad19839713ba94ec6b2adcdb3ab736f69cb1ed6de4936d18a25a9ca3eca77b7bcc469f2ed534389155bd2e9bf14bf06

  • memory/520-54-0x00000000753F1000-0x00000000753F3000-memory.dmp

    Filesize

    8KB