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Analysis

  • max time kernel
    141s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/11/2023, 14:17

General

  • Target

    c3c89877a369ad1d94342b4e05f0abc03c4cb5560ec6d834c34fc4ca231bf1d9.exe

  • Size

    1.9MB

  • MD5

    1ed1cc584962a2a0234885ca7cbbf87f

  • SHA1

    14e225ae0699a5758dd5aaaa5d1c5037c6c6c944

  • SHA256

    c3c89877a369ad1d94342b4e05f0abc03c4cb5560ec6d834c34fc4ca231bf1d9

  • SHA512

    c11674ff35b49fae7ea9c30a1e6bcc98a8f4b5c8f264f9d55669f22a4083ade5fdb0a091a43ce2d04537ed383d23f0324b565fac1182b66478ec8d1c8f584d17

  • SSDEEP

    49152:47QMGIEr2hyyU/sQaIbd/HA/XXO5YbQBIEbrGygStXBqxoXbrSIQ5kBGpo2A:45GIE6XU/sQDd4/e5YkBIEbrGygSZr9C

Malware Config

Signatures

  • FatalRat

    FatalRat is a modular infostealer family written in C++ first appearing in June 2021.

  • Fatal Rat payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c3c89877a369ad1d94342b4e05f0abc03c4cb5560ec6d834c34fc4ca231bf1d9.exe
    "C:\Users\Admin\AppData\Local\Temp\c3c89877a369ad1d94342b4e05f0abc03c4cb5560ec6d834c34fc4ca231bf1d9.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1780
  • C:\Windows\Svwxya.exe
    C:\Windows\Svwxya.exe
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Suspicious use of SetWindowsHookEx
    PID:4972

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\WINDOWS\SysWOW64\1.bin

    Filesize

    209KB

    MD5

    bf40a37bf17824bac4d6324170848495

    SHA1

    60d19043f912c1e2cbf034f6c8dc89dc858ee8a5

    SHA256

    f7c2997e2ab1ae511693b05dc7adc302dbea2fc34424761e081177a614f97a5a

    SHA512

    d17c33970b6e092bf185b84ac8271f2f1f309034b258394832a6f70750a7e5f82835d68ff994341259658597aedc965c6f7430efa8dd15cea1c28089fcc9af5f

  • C:\Windows\Svwxya.exe

    Filesize

    1.9MB

    MD5

    1ed1cc584962a2a0234885ca7cbbf87f

    SHA1

    14e225ae0699a5758dd5aaaa5d1c5037c6c6c944

    SHA256

    c3c89877a369ad1d94342b4e05f0abc03c4cb5560ec6d834c34fc4ca231bf1d9

    SHA512

    c11674ff35b49fae7ea9c30a1e6bcc98a8f4b5c8f264f9d55669f22a4083ade5fdb0a091a43ce2d04537ed383d23f0324b565fac1182b66478ec8d1c8f584d17

  • C:\Windows\Svwxya.exe

    Filesize

    1.9MB

    MD5

    1ed1cc584962a2a0234885ca7cbbf87f

    SHA1

    14e225ae0699a5758dd5aaaa5d1c5037c6c6c944

    SHA256

    c3c89877a369ad1d94342b4e05f0abc03c4cb5560ec6d834c34fc4ca231bf1d9

    SHA512

    c11674ff35b49fae7ea9c30a1e6bcc98a8f4b5c8f264f9d55669f22a4083ade5fdb0a091a43ce2d04537ed383d23f0324b565fac1182b66478ec8d1c8f584d17

  • memory/1780-1-0x00000000032C0000-0x00000000032F5000-memory.dmp

    Filesize

    212KB

  • memory/1780-2-0x0000000010000000-0x000000001002A000-memory.dmp

    Filesize

    168KB