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Analysis

  • max time kernel
    108s
  • max time network
    110s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/10/2024, 00:02

General

  • Target

    f5b0ec79fc755b366122d05be574d80ad05a494601cce12e234f03da3a3c397bN.exe

  • Size

    3.5MB

  • MD5

    3f8ad4fd18d8604f9b0ddcec3792b0e0

  • SHA1

    2d27ec1fd150d82b36199b2204d5333f4b905ace

  • SHA256

    f5b0ec79fc755b366122d05be574d80ad05a494601cce12e234f03da3a3c397b

  • SHA512

    226d18f9941b8b1a32bc683f2418df159a2b33c88c83a89b4f9084852dab9ec042d50a2361e6bc3211edc3058c01df6d455f7c103051d077f9a6a4305ccc0efd

  • SSDEEP

    49152:91oKkLJU9nU2foKhA4vSWidGHp+NDGQUzbpDOfjxAkrL:joK3BDhtvS0Hpe4zbpaAKL

Malware Config

Signatures

  • Renames multiple (316) files with added filename extension

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f5b0ec79fc755b366122d05be574d80ad05a494601cce12e234f03da3a3c397bN.exe
    "C:\Users\Admin\AppData\Local\Temp\f5b0ec79fc755b366122d05be574d80ad05a494601cce12e234f03da3a3c397bN.exe"
    1⤵
    • Adds Run key to start application
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Windows\SysWOW64\sysx32.exe
      C:\Windows\system32\sysx32.exe /scan
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:3680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\7-Zip\7z.exe

    Filesize

    3.5MB

    MD5

    6a8f6ff032e8a58327f3498c016ab62e

    SHA1

    be556ab7408eb71da5086a8a982201a996ca295f

    SHA256

    1c6be03babdcf3db2c643b8cc658e06cf5933d2eb55d5f2ce394796b22b0e884

    SHA512

    4f97893fd308e6fc3001c2e40ee1361655b524d2d2101ad52c61b7a13e212251f0a561f6ddb3300cfbd20994dba8ddce785d892dedd942286282386ab7fbff5c

  • C:\Windows\SysWOW64\sysx32.exe

    Filesize

    3.5MB

    MD5

    3f8ad4fd18d8604f9b0ddcec3792b0e0

    SHA1

    2d27ec1fd150d82b36199b2204d5333f4b905ace

    SHA256

    f5b0ec79fc755b366122d05be574d80ad05a494601cce12e234f03da3a3c397b

    SHA512

    226d18f9941b8b1a32bc683f2418df159a2b33c88c83a89b4f9084852dab9ec042d50a2361e6bc3211edc3058c01df6d455f7c103051d077f9a6a4305ccc0efd

  • memory/2052-0-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/2052-9-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3680-1020-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3680-1021-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3680-2685-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3680-2686-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3680-2687-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB

  • memory/3680-2688-0x0000000000400000-0x0000000000411000-memory.dmp

    Filesize

    68KB