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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/05/2024, 21:46

General

  • Target

    4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7.exe

  • Size

    75KB

  • MD5

    20dcf1c469e68983e50d9976c92274b0

  • SHA1

    dbea4941b1aaf29bf1bb0aae87e61fcd08a1cee4

  • SHA256

    4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7

  • SHA512

    b53d1af2901e8c817b9d2b4c54992d138e4dd63a273617851c86cdfd491e38987655323a26fbb11b364f1cf1c16b59a61e333c621091b8acfe3c9e718032ef85

  • SSDEEP

    1536:ax1Qja7luy6y0s4sqfkbnAKBOKofHfHTXQLzgvnzHPowYbvrjD/L7QPbg/Dr0T3s:KOjWuyt0ZsqsXOKofHfHTXQLzgvnzHPE

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 7 IoCs
  • Drops file in Drivers directory 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 19 IoCs

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

  • Maps connected drives based on registry 3 TTPs 6 IoCs

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

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7.exe
    "C:\Users\Admin\AppData\Local\Temp\4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3620
    • C:\Windows\SysWOW64\ctfmen.exe
      ctfmen.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2464
      • C:\Windows\SysWOW64\smnss.exe
        C:\Windows\system32\smnss.exe
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Enumerates connected drives
        • Maps connected drives based on registry
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:2448

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\ctfmen.exe

    Filesize

    4KB

    MD5

    9df0c4f7466221bec22220e9640cf626

    SHA1

    c5365c1b6cf0b905497582c1a0096c56ac799ddd

    SHA256

    1cbf4929ffab50af6e4ba5d1ec6d04493281c701fb3f5b8e3ad1fe1ab6ca5dd1

    SHA512

    3b10b94c90a3d413fff805ca7f7bc51c65cdccab1cbc0578a98497869d1d332eb1e57373a5d20b425ce96a094dc59a1d00def99e628567fee97fbf41d51286d6

  • C:\Windows\SysWOW64\grcopy.dll

    Filesize

    75KB

    MD5

    42c4b6734a1c725e48c3ae12ffc43c7a

    SHA1

    bafb92359e59dc84d17fa4f84b089bf43e6ce90e

    SHA256

    3fc9309549d21865199beed063351c36c32e9f4a1ab1766673cf0fa10049e0a3

    SHA512

    2a79d26401e611b1c75e24b1193af96f493cf41eeab52a1d6fbc2b18756e2b04c2323a5159ab84c77c24d8ecd90c30c149e1a1936bb5b17d9018c2797c28938b

  • C:\Windows\SysWOW64\satornas.dll

    Filesize

    183B

    MD5

    618f396f4daf170ef857278caf3255ce

    SHA1

    3076f395361b52251e690ae9e21a6a63fdd970c2

    SHA256

    db2d354d8978ad0bea19d1e8754d9cdee8657b8b1033d0db972e65e28b20cb76

    SHA512

    060735c4b99c5b383d055da5f8f47d65665b45b8453a7bfe3f9ae1dd87e2b588b4b09bfed530e3a6f0e0b90bb3a9acad09d7e38f99e04b21a14af560f3a937ed

  • C:\Windows\SysWOW64\shervans.dll

    Filesize

    8KB

    MD5

    b42aae95c6079423298e5e56c673d71b

    SHA1

    5b3dfb1b0ad6e036b9dcbed75ff144dc6fd1866e

    SHA256

    853d9c477d569eee537b4a8ff8137a7b1d52fe90bfd6fb5ee58d82ab2350b59b

    SHA512

    0c9a6d295c28ab833c40adaa57840efae0d75ee465e5e7e983c8fb5132a792587a940d5b85b81348e93db591d78cbb6e495038afaef52f7595b45ed2fe28416e

  • memory/2448-53-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-43-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-63-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-61-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-59-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-36-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/2448-37-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-39-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-41-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-57-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-45-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-47-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-49-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-51-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2448-55-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2464-28-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/2464-23-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3620-17-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/3620-22-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/3620-20-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB