Analysis

  • max time kernel
    160s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    12/02/2022, 12:58

General

  • Target

    089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe

  • Size

    3.3MB

  • MD5

    567375246cc940c692c8a4096197ab4d

  • SHA1

    09d8d3ced838d86dbc30b34ecee96fa58b479efc

  • SHA256

    089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e

  • SHA512

    6542f2574a283447b7111a7792c8f90a8bad30df5a168db0b7b3560590c7a8398492928391876eee0c682147268a7362fd46a619d998fe5007a06b6e3b68ab3c

Malware Config

Extracted

Family

cryptbot

C2

gomdsx15.top

morxub01.top

Attributes
  • payload_url

    http://peulaq01.top/download.php?file=lintel.exe

Signatures

  • CryptBot

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Windows directory 8 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.

  • Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe
    "C:\Users\Admin\AppData\Local\Temp\089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe"
    1⤵
    • Checks processor information in registry
    PID:1888
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:4064
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:4524

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1888-130-0x000000000051E000-0x0000000000520000-memory.dmp

          Filesize

          8KB

        • memory/1888-131-0x00000000027F0000-0x00000000027F1000-memory.dmp

          Filesize

          4KB

        • memory/1888-132-0x0000000002A90000-0x0000000002AD8000-memory.dmp

          Filesize

          288KB

        • memory/4064-133-0x0000015798D80000-0x0000015798D90000-memory.dmp

          Filesize

          64KB

        • memory/4064-134-0x0000015799560000-0x0000015799570000-memory.dmp

          Filesize

          64KB

        • memory/4064-135-0x000001579C160000-0x000001579C164000-memory.dmp

          Filesize

          16KB