Analysis

  • max time kernel
    118s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    11/02/2022, 23:30

General

  • Target

    e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e.exe

  • Size

    383KB

  • MD5

    7ab2dc0a23659e898606e92ef8d7a8f0

  • SHA1

    166791171e781ab0a46db24f9d9d2742e534f4de

  • SHA256

    e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e

  • SHA512

    0afdbd896ca51d7016cba16a838610c6dccb3dc1062c970dcd5e8d28490adfe360b358185ef31bcf4788f73d6812722db1a13ee67ca41ab7635ea56ef0641066

Malware Config

Extracted

Family

cryptbot

C2

sezfxh22.top

mornoz02.top

Attributes
  • payload_url

    http://ekuimr12.top/download.php?file=elwood.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\e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e.exe
    "C:\Users\Admin\AppData\Local\Temp\e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1480
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\BpnFDgWYh & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:1988

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1480-55-0x000000000066B000-0x0000000000691000-memory.dmp

          Filesize

          152KB

        • memory/1480-56-0x0000000074B21000-0x0000000074B23000-memory.dmp

          Filesize

          8KB

        • memory/1480-57-0x000000000066B000-0x0000000000691000-memory.dmp

          Filesize

          152KB

        • memory/1480-58-0x0000000000220000-0x0000000000265000-memory.dmp

          Filesize

          276KB

        • memory/1480-59-0x0000000000400000-0x0000000000448000-memory.dmp

          Filesize

          288KB