Analysis

  • max time kernel
    150s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/05/2025, 09:59

General

  • Target

    b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe

  • Size

    74KB

  • MD5

    58fd583afd75de9a8449f8dfa8e0c9ba

  • SHA1

    3aec992df8e00529c201ed084aea17549bba1d65

  • SHA256

    b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0

  • SHA512

    a921fce88845845026f0bf52393af75796f4fda58f18d0f4ed993ca2adb610416365fa8f701e2f540b3b556ddf34b90621c23e721d9d07f397138b2750e06a6d

  • SSDEEP

    768:uZ4FLz8ae+rOn8ae+rOnE2lGZD4TzvPYNWw1Asvvzzv6t0+3eQKyvqjjUJu9zVBG:uGIIO+I8K/XCKCGSqzVI

Score
9/10

Malware Config

Signatures

  • Renames multiple (5317) files with added filename extension

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

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe
    "C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4300
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:1636
    • C:\Users\Admin\AppData\Local\Temp\_createdump.exe
      "_createdump.exe"
      2⤵
      • Executes dropped EXE
      PID:3260

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        • C:\$Recycle.Bin\S-1-5-21-1153236273-2212388449-1493869963-1000\desktop.ini.exe

          Filesize

          18KB

          MD5

          f1180d180a99b3fb1478812180449848

          SHA1

          1921e192e5162652c7c8fbf16d1359ebb371475b

          SHA256

          f805c118fe08592535338198f3e10187d1b831b07494afaff3714de9dbbd7691

          SHA512

          b40614f24830eccbfcef834ae1e655f6e4a5f01ede57e0c2fbdc8c714977baf523fcf6b2021a8dc72765d69b1593463912dfa0bb251a009c98944b7e1a98eff7

        • C:\Users\Admin\AppData\Local\Temp\_createdump.exe

          Filesize

          56KB

          MD5

          a05b36f6129223951282f9df776761b1

          SHA1

          ec87fa41a670cffa5d77f64366fe109278661f2c

          SHA256

          5113e7ae92f3a7aebc7f8e363209866d4d743b06a26c67e0886979a56fd3a10d

          SHA512

          38b588b28057994305a3abc37d98770ab7ff905cba6da35e91b2936b99823955fc91b90a23174d53337dd62e320b9bac066b76734bf657de9fad6d37071c70da

        • C:\Windows\SysWOW64\Zombie.exe

          Filesize

          17KB

          MD5

          81fc313583ccf1af2e200d929f8296ac

          SHA1

          367ebe8c9279cfe7ff9bcfcfb79abe2a84ab5aac

          SHA256

          2db302b332c82e45bb493ba1eb081041da9ec60c861ec82c65d6f5177d13b9d7

          SHA512

          628bb9220a1aececfeae1173e0efdf9e6eb21e5304f0a40492c3339c11b70c403376a368189ccf4a71ed0d3600c7ccc196531b2c2bb3cf92bd33187b35d1534c

        • memory/4300-23-0x0000000000400000-0x0000000000407000-memory.dmp

          Filesize

          28KB