Analysis

  • max time kernel
    118s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31-10-2024 05:32

General

  • Target

    YL81L_file.exe

  • Size

    35KB

  • MD5

    1b76c0d5d1d6a5197d055223b134dcca

  • SHA1

    b8092605ecbb529a7372e42b7cbcda4b55e78ef1

  • SHA256

    024d5a39a58cae8343c5ee34629868c6440ea7a3dce8a2f226c8161d5005d196

  • SHA512

    27dad7330d431d48744d8aa348c6377deb51917a4f2ed6510ec6f9bbda55ea386ef3fd5e5039b921163d9d3c81f5423c6648062c0925d86cf05c63ca978805e3

  • SSDEEP

    384:vSBqVEqKykkTwusE+E33Rz3UXmbXLZoWR27vHsJQcXT/G58pkFyHBLTIZwgG+Vv1:EQDb3QIXDh7GVFy79evOjh2yED

Malware Config

Extracted

Family

xworm

Version

5.0

C2

didjmdk3nindi3nd.zapto.org:7000

70.241.39.14:7000

Mutex

Q6QXs3CM0drEuir0

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    XC.exe

aes.plain

Extracted

Family

phemedrone

C2

https://api.telegram.org/bot6217988193:AAFiJwdcFHDuCM08fAA_dnBQZGLDPSVjUQY/sendDocument

Signatures

  • Detect Xworm Payload 1 IoCs
  • Phemedrone

    An information and wallet stealer written in C#.

  • Phemedrone family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Downloads MZ/PE file
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\YL81L_file.exe
    "C:\Users\Admin\AppData\Local\Temp\YL81L_file.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Users\Admin\AppData\Local\Temp\kllfto.exe
      "C:\Users\Admin\AppData\Local\Temp\kllfto.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2820 -s 748
        3⤵
          PID:1220

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      138KB

      MD5

      cae3f7ae06655eb93f5dfb028ddd3d6d

      SHA1

      54821b16fab00ec529f0b99e1d49de8d291eb492

      SHA256

      1fc74fb83aebbe5a37b41e7a4e900a83288618ca696d76a717e2d6a51fad343f

      SHA512

      e2226e3ba2c9bd079db74dcc0cb87f8d6449c99dfe3d2ccae0dda40b7c1a1ca3b77341e49c72bbb183aca86fd29960a70836bfb758f42c3bf83605b3f808dad8

    • memory/2532-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

      Filesize

      4KB

    • memory/2532-1-0x0000000000E60000-0x0000000000E70000-memory.dmp

      Filesize

      64KB

    • memory/2532-6-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

      Filesize

      9.9MB

    • memory/2532-7-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

      Filesize

      4KB

    • memory/2532-8-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

      Filesize

      9.9MB

    • memory/2820-14-0x0000000000C10000-0x0000000000C38000-memory.dmp

      Filesize

      160KB

    • memory/2820-15-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

      Filesize

      9.9MB

    • memory/2820-16-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

      Filesize

      9.9MB

    • memory/2820-17-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

      Filesize

      9.9MB