Analysis

  • max time kernel
    119s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/02/2022, 08:41

General

  • Target

    36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe

  • Size

    7.6MB

  • MD5

    9e9b8e1845d216ee1504fa90ff6d5371

  • SHA1

    911c96b3976e0846ff1f46ecd0f8c855405d81da

  • SHA256

    36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95

  • SHA512

    c93e7be4bcc63a5106b4fc1d951c4c63854c5a2ea7a2fa278f580d375c764569ca3d23033b6ba027aea16f14faeb78923d643a99b9599440226a4483755e1448

Malware Config

Extracted

Family

cryptbot

C2

tishun65.top

morvak06.top

Attributes
  • payload_url

    http://dankvu08.top/download.php?file=teamer.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\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe
    "C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\vwGDQcpfcWjmo & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\36a91c2436063a936deafe03ce15685a4a952bc03d125fd4b79315a829d96c95.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1500
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:1036

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/944-56-0x0000000074EC1000-0x0000000074EC3000-memory.dmp

          Filesize

          8KB

        • memory/944-57-0x00000000003C0000-0x00000000003C1000-memory.dmp

          Filesize

          4KB

        • memory/944-55-0x0000000000438000-0x000000000043A000-memory.dmp

          Filesize

          8KB

        • memory/944-58-0x0000000000C50000-0x0000000000C98000-memory.dmp

          Filesize

          288KB