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
    10-06-2024 23:07

General

  • Target

    6ad1912cbc7b771b829dc433db04aa8934b3c8ab429fc8891b344338dd01479f.exe

  • Size

    239KB

  • MD5

    79f16bd2267886c88ca402c815ff44da

  • SHA1

    55a9a4f672f3514f3e5dada2bdd01381384b7f1a

  • SHA256

    6ad1912cbc7b771b829dc433db04aa8934b3c8ab429fc8891b344338dd01479f

  • SHA512

    bc9ee10a21b6e55eefacca0a8d5335c4369c93013fcebe27974bd71ddf341b21b26cbd8c36539483453efa9bf47be15fb268d384b380956aac70f5f8decf8938

  • SSDEEP

    3072:enaym3AIuZAIuyxJrQulAw9mHpKZNGCLOwstyhZFChcssc56FUrgxvbSD4UQrO2S:wHm3AIuZAIuyxJrZ9UpK7ShcHUaZk

Score
9/10

Malware Config

Signatures

  • Renames multiple (3497) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • UPX dump on OEP (original entry point) 5 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • UPX packed file 5 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6ad1912cbc7b771b829dc433db04aa8934b3c8ab429fc8891b344338dd01479f.exe
    "C:\Users\Admin\AppData\Local\Temp\6ad1912cbc7b771b829dc433db04aa8934b3c8ab429fc8891b344338dd01479f.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      PID:1100
    • C:\Users\Admin\AppData\Local\Temp\_cinst.exe
      "_cinst.exe"
      2⤵
      • Executes dropped EXE
      PID:2392

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\$Recycle.Bin\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini.tmp

    Filesize

    96KB

    MD5

    ca7c1c61a37eb9827395df5ba2e0fb1d

    SHA1

    107b4f9d08b5696d7d58ede2ef41257687e7deb4

    SHA256

    687bab215816a4a1b4eeaf1b629e024c4a38459aeaa830a14f60f43864c9bccf

    SHA512

    997869337657b1ee496399c128b96c0262bfa4d8f6d2bd1d1d4e16fdca140d4500d04219fa3d4930aa9fb24e09a9e17aea993b8b2bd60d4cc8f0414977b2d48b

  • \Users\Admin\AppData\Local\Temp\_cinst.exe

    Filesize

    143KB

    MD5

    2fdb371d45181dff59577110ba1064e2

    SHA1

    42a5833cb0ac90e38d734d1327bb3f7c7a6aa453

    SHA256

    80d7ec8ce3913d81ea5d4f304b8609e56f0e49778c52af9279e742ea54f4a155

    SHA512

    52982041ba9ca552b90b79b251501ec6c33c5251d09ca9969a1b179af2ec17aca6eb81db6e588e12751bcea04208e1da8d5a754a979dd98ceb3f50780aadea20

  • \Windows\SysWOW64\Zombie.exe

    Filesize

    96KB

    MD5

    5829fa8dc997f814aec5aab48c031cf2

    SHA1

    bfcb09138d6f55824c5ccb1f3c3efa7c4b0ec180

    SHA256

    7b61abab5027b6452db8e8405e64b902d9f83aa6f65854a7055f48daad8ef6b2

    SHA512

    c61def35c728dadfbbf097cc0c06aa4f5de1663ad17003b0339c6d0d591cb1ef3adcf6eb9cf7555e5de3e0c942e514e55139dc1dee68084b399e7fdc3a782774

  • memory/1100-19-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2228-0-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2228-7-0x0000000000260000-0x000000000026B000-memory.dmp

    Filesize

    44KB

  • memory/2228-18-0x0000000000260000-0x000000000026B000-memory.dmp

    Filesize

    44KB

  • memory/2392-24-0x0000000000020000-0x0000000000048000-memory.dmp

    Filesize

    160KB

  • memory/2392-23-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

    Filesize

    4KB