Analysis

  • max time kernel
    139s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/11/2024, 23:06

General

  • Target

    635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221.exe

  • Size

    4.9MB

  • MD5

    943fb6fb430fbac169b4ce55189206ad

  • SHA1

    c7050a4a1102c4abe5453e0b7c3080e2875fab28

  • SHA256

    635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221

  • SHA512

    bc45a6758dcc470678cf6a3ff3cd989d473866fb991e85309c995b7b79b75ec6ac8333673f3b5a3aad820c3119337eef34f9569a6204c7c8cb558c9c7b05a61a

  • SSDEEP

    49152:9g/xFnOvtaWIDn0a2qnqYQVMkL+q/vSWidGHp+NDGQUzbpDOfjxAkrQKl+RPAFIA:IaklJKvS0Hpe4zbpaAKQkroGIC

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 2 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221.exe
    "C:\Users\Admin\AppData\Local\Temp\635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3280
    • 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:4852
    • C:\Users\Admin\AppData\Local\Temp\_635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221.exe
      C:\Users\Admin\AppData\Local\Temp\_635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221.exe
      2⤵
      • Executes dropped EXE
      PID:64

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\7-Zip\7z.exe

          Filesize

          4.9MB

          MD5

          faf1118ab8493df7829c59f7ef8ba26a

          SHA1

          be7437a5650ff6628aa4aaa872afd8499db3c652

          SHA256

          5c3b146c18b16b4a8db02453e04b455be394681cf9870e97e2fa253482c7cf2e

          SHA512

          e124b0f46101882a40b475280d2e0152c6b861a43d0b8377e4adc15c96e73ee04b4a09faf3f23087c0d11c653441e6d42022c0c2a92f75a26389233f4185516e

        • C:\Users\Admin\AppData\Local\Temp\_635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221.exe

          Filesize

          4.9MB

          MD5

          757b6abbbee579077b100778e2e3032c

          SHA1

          90ab4e4560b35479460becfd77be01cc5412bf06

          SHA256

          9956fe3448870d4f9735fcd20905cc199449b674999497e0fe21615e88b63707

          SHA512

          cdff71639d6097eee9f8d243a1e5db967f32ba67f7de47f09d2906e23f9caa60d7f9a122447b75e307e44793b8d066bc70e4de5545bd84d134e2702ae00a46f6

        • C:\Windows\SysWOW64\sysx32.exe

          Filesize

          4.9MB

          MD5

          943fb6fb430fbac169b4ce55189206ad

          SHA1

          c7050a4a1102c4abe5453e0b7c3080e2875fab28

          SHA256

          635034820d0830ff4950f274a062e5be5c7c113bc8b05b09d5d84396fa7ca221

          SHA512

          bc45a6758dcc470678cf6a3ff3cd989d473866fb991e85309c995b7b79b75ec6ac8333673f3b5a3aad820c3119337eef34f9569a6204c7c8cb558c9c7b05a61a

        • memory/3280-0-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/3280-32-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4852-960-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4852-961-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4852-2687-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4852-2688-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4852-2689-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4852-2690-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB