Analysis

  • max time kernel
    118s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/02/2022, 01:52

General

  • Target

    9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759.exe

  • Size

    270KB

  • MD5

    2e699eb3b3c53381ba5fb3cd3c161cee

  • SHA1

    c6149aa2dad22df650c22fbb129570d4cf1680ba

  • SHA256

    9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759

  • SHA512

    796f381818bc6ec2d85a9093d7f4472f8c769c19d14b4b7a278653fd35fb36d7fd3be4e2b3caf1e95b1ca5c5ace24a6f24222e4b32dc36d5d95d4e3b3bc12ccb

Malware Config

Extracted

Family

cryptbot

C2

sezqks52.top

morwyf05.top

Attributes
  • payload_url

    http://ekulmy16.top/download.php?file=vimful.exe

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Deletes itself 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759.exe
    "C:\Users\Admin\AppData\Local\Temp\9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1516
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\yVtcBFIMZb & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:596

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1516-54-0x0000000075471000-0x0000000075473000-memory.dmp

          Filesize

          8KB

        • memory/1516-55-0x00000000002A0000-0x00000000002C5000-memory.dmp

          Filesize

          148KB

        • memory/1516-56-0x0000000000310000-0x0000000000355000-memory.dmp

          Filesize

          276KB

        • memory/1516-57-0x0000000000400000-0x0000000000448000-memory.dmp

          Filesize

          288KB