Analysis

  • max time kernel
    152s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03-03-2024 01:08

General

  • Target

    Email-Worm/Lacon.exe

  • Size

    12KB

  • MD5

    cb0f7b3fd927cf0d0ba36302e6f9af86

  • SHA1

    32bdc349a35916e8991e69e9be1bd2596b6321cc

  • SHA256

    9b3f73a12a793d1648f3209e1e3f10bbb548b1ec21d53b8ac060b7b95ae4ef1f

  • SHA512

    e6152f3645d73c63f3f3aa9881fe8b404f9794b14a8ecaea659621828462baf042c13c88bb7f2c32277fa854ceda3056d09aa5603e92b107c6c8194464154252

  • SSDEEP

    192:W+4C8fFkIp+ShIKIw4MUbLblp1E7qBalMyIl3PAHN0PhNx:W5kIp1IM4MUbPn1afIK4x

Score
7/10

Malware Config

Signatures

  • Drops startup file 2 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 18 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Email-Worm\Lacon.exe
    "C:\Users\Admin\AppData\Local\Temp\Email-Worm\Lacon.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops file in System32 directory
    • Suspicious use of SetWindowsHookEx
    PID:3056
  • C:\Program Files (x86)\Microsoft Office\Office14\OUTLOOK.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\OUTLOOK.EXE" -Embedding
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:2900

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\FORMS\FRMCACHE.DAT

    Filesize

    240KB

    MD5

    b152a28c78a1fd1f415946a4d8d86570

    SHA1

    cb96a9c3efb9d86d6e68a627279f7245f386b72a

    SHA256

    8dc4d7cc1ba97ae272b7e4a523c77d734b0bb63cfb70cab3913c8dab546a644b

    SHA512

    51eedd5ec6a7bdf5434d266a0f0c350115a6d5345b57892afc336dfb3a06ec675ad560e036e3633d73bd31bd1c61b62379d626ed47c02742db039f4d8495a713

  • C:\Users\Admin\AppData\Local\Microsoft\Outlook\mapisvc.inf

    Filesize

    1KB

    MD5

    48dd6cae43ce26b992c35799fcd76898

    SHA1

    8e600544df0250da7d634599ce6ee50da11c0355

    SHA256

    7bfe1f3691e2b4fb4d61fbf5e9f7782fbe49da1342dbd32201c2cc8e540dbd1a

    SHA512

    c1b9322c900f5be0ad166ddcfec9146918fb2589a17607d61490fd816602123f3af310a3e6d98a37d16000d4acbbcd599236f03c3c7f9376aeba7a489b329f31

  • C:\Windows\SysWOW64\No Call List.exe

    Filesize

    12KB

    MD5

    cb0f7b3fd927cf0d0ba36302e6f9af86

    SHA1

    32bdc349a35916e8991e69e9be1bd2596b6321cc

    SHA256

    9b3f73a12a793d1648f3209e1e3f10bbb548b1ec21d53b8ac060b7b95ae4ef1f

    SHA512

    e6152f3645d73c63f3f3aa9881fe8b404f9794b14a8ecaea659621828462baf042c13c88bb7f2c32277fa854ceda3056d09aa5603e92b107c6c8194464154252

  • memory/2900-11-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2900-12-0x000000007331D000-0x0000000073328000-memory.dmp

    Filesize

    44KB

  • memory/2900-140-0x000000007331D000-0x0000000073328000-memory.dmp

    Filesize

    44KB

  • memory/3056-0-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/3056-1-0x0000000000020000-0x000000000002E000-memory.dmp

    Filesize

    56KB

  • memory/3056-2-0x0000000000020000-0x000000000002E000-memory.dmp

    Filesize

    56KB

  • memory/3056-137-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/3056-139-0x0000000000020000-0x000000000002E000-memory.dmp

    Filesize

    56KB