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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 02:18

General

  • Target

    bbdd38fcf1e08fbf17a53db96b45369b32748a2713c8ad9f18f1913b82d951d3.exe

  • Size

    96KB

  • MD5

    a6c84e47bba33813a97f6bbb5dcc8e71

  • SHA1

    0e0a26f8bdf1113c6da38874448886d9a33a8e6c

  • SHA256

    bbdd38fcf1e08fbf17a53db96b45369b32748a2713c8ad9f18f1913b82d951d3

  • SHA512

    881aef4d81e5bae13b915aa16c578b058210df1338741dd8c1134e3324a01fd8610843f255a16845e1c2bc58dcad1328b04f81c877cadec22aa8d5006dc1ca5c

  • SSDEEP

    1536:Isz1++PJHJXFAIuZAIuekc9zBfA1OjBWgOI3uicwa+shcBEN2iqxtdSCow8hfo:hfAIuZAIuYSMjoqtMHfhfo

Score
9/10

Malware Config

Signatures

  • Renames multiple (1580) files with added filename extension

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

  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bbdd38fcf1e08fbf17a53db96b45369b32748a2713c8ad9f18f1913b82d951d3.exe
    "C:\Users\Admin\AppData\Local\Temp\bbdd38fcf1e08fbf17a53db96b45369b32748a2713c8ad9f18f1913b82d951d3.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      PID:4168
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=5024 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2168

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-3808065738-1666277613-1125846146-1000\desktop.ini.exe

      Filesize

      96KB

      MD5

      2bac71fe613977c04dc8ff0ef30888b6

      SHA1

      9d65f06d929089bcb16c2852450f1a0386817108

      SHA256

      2d0756c2bdf4cd33b75015722018654ec02e4e5d3aceef4a6f17ca16ffc358d3

      SHA512

      5de6c1fc35e0b2b656db2c3f9269239ce9681e11c9117f3968b93e165ed8eca89bcc22d9cfcb255e0a2493e9edd2b26419028858b279f0adf1ff0224ba44faba

    • C:\Windows\SysWOW64\Zombie.exe

      Filesize

      96KB

      MD5

      14db7f7f9cc0fce98acc41391fa3585a

      SHA1

      4d2ee614bd71c6d3b848c6437643bd1aeaf357cc

      SHA256

      327ab8eb5caf70cfbbdd38b989e9fa97601fd7a156bb66d23ee7d976ac65b467

      SHA512

      d58e0343b13cedab4a753397f87df09880b240938299d53419ccf301b09aa351d5d69f1836ae24331fdbff13c0379e70ccbc8417e0bc42954f07e3110acf17fe

    • memory/2104-0-0x0000000000400000-0x000000000040A000-memory.dmp

      Filesize

      40KB

    • memory/2104-20-0x0000000000400000-0x000000000040A000-memory.dmp

      Filesize

      40KB