Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-06-2024 05:05

General

  • Target

    f3db56acaed371af569d8daed72073f434ec1b63f4d65fb10dc015210ee65f25.exe

  • Size

    88KB

  • MD5

    8ac3c62e0e68635085c1707709125fbc

  • SHA1

    72e7f3ccc1d40e31c1952c8b9fa2d45595300c51

  • SHA256

    f3db56acaed371af569d8daed72073f434ec1b63f4d65fb10dc015210ee65f25

  • SHA512

    502ae3e69782541551b0965305abab850430bce03e7f09186ad1de713a4e1586a8625fbf63226cc6ae565f1263c1598796d078ff1415cdc5d5d908d9cf6097bd

  • SSDEEP

    1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSj:11PgEOng1d66jRVa+n4NmNNouukrD7HI

Malware Config

Signatures

  • Detects executables containing base64 encoded User Agent 3 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Blocklisted process makes network request 9 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f3db56acaed371af569d8daed72073f434ec1b63f4d65fb10dc015210ee65f25.exe
    "C:\Users\Admin\AppData\Local\Temp\f3db56acaed371af569d8daed72073f434ec1b63f4d65fb10dc015210ee65f25.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4280
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\xdgdt.exe "C:\Users\Admin\AppData\Local\Temp\f3db56acaed371af569d8daed72073f434ec1b63f4d65fb10dc015210ee65f25.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4704
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • Runs ping.exe
        PID:2904
      • C:\Users\Admin\AppData\Local\Temp\xdgdt.exe
        C:\Users\Admin\AppData\Local\Temp\\xdgdt.exe "C:\Users\Admin\AppData\Local\Temp\f3db56acaed371af569d8daed72073f434ec1b63f4d65fb10dc015210ee65f25.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4880
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\kkwtv\etrpd.tpe",crc32 C:\Users\Admin\AppData\Local\Temp\xdgdt.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2256
          • \??\c:\windows\SysWOW64\taskkill.exe
            taskkill /f /im attrib.exe
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:3956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    87fbb5fef345b0baaada6d209db2f8fe

    SHA1

    7c52c47798cc6c353df2abe1494202cdbfe8e6e0

    SHA256

    f9b118cbcb83bf37c0fef1717928d923268eb19a0bcc045adb1e2ec5912f8051

    SHA512

    a3ae1774b6e017fbe41141f14714cbedad7cebe9f662dbc41f93c012638940e6dc95e4605f440a90327604acf753cde887418a71313a415dee87da47000d423d

  • \??\c:\kkwtv\etrpd.tpe

    Filesize

    57KB

    MD5

    2f53f49e01f09d6e6064871eec1955cd

    SHA1

    a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f

    SHA256

    964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d

    SHA512

    2cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218

  • memory/2256-12-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2256-13-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2256-15-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/2256-17-0x0000000010000000-0x0000000010022000-memory.dmp

    Filesize

    136KB

  • memory/4280-0-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/4280-1-0x00000000007F0000-0x00000000007F1000-memory.dmp

    Filesize

    4KB

  • memory/4280-3-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB

  • memory/4880-7-0x00000000020E0000-0x0000000002112000-memory.dmp

    Filesize

    200KB

  • memory/4880-9-0x0000000000400000-0x0000000000428000-memory.dmp

    Filesize

    160KB