Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    12/02/2022, 00:50

General

  • Target

    bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe

  • Size

    386KB

  • MD5

    dfc02658cb106d327ec0379beb50df44

  • SHA1

    a2e49b450c91e6ade762e4d1a037b42a054b028b

  • SHA256

    bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec

  • SHA512

    c768f5646b9c20c4108c3b157f564a38d10d06473af53b3cc0e8c523df0e476c0adba0657ee57f6c34c51c7278f75c6e4d3569c5cfd87dfee6eacaa0d52e0c86

Malware Config

Extracted

Family

cryptbot

C2

gomdhv42.top

morsof04.top

Attributes
  • payload_url

    http://peulnm16.top/download.php?file=parter.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\bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe
    "C:\Users\Admin\AppData\Local\Temp\bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe"
    1⤵
    • Checks processor information in registry
    PID:4132
  • 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:2240
  • 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:4188

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2240-134-0x000001DAB4A20000-0x000001DAB4A30000-memory.dmp

          Filesize

          64KB

        • memory/2240-135-0x000001DAB4A80000-0x000001DAB4A90000-memory.dmp

          Filesize

          64KB

        • memory/2240-136-0x000001DAB7150000-0x000001DAB7154000-memory.dmp

          Filesize

          16KB

        • memory/4132-130-0x0000000000862000-0x0000000000887000-memory.dmp

          Filesize

          148KB

        • memory/4132-131-0x0000000000862000-0x0000000000887000-memory.dmp

          Filesize

          148KB

        • memory/4132-132-0x0000000000610000-0x0000000000655000-memory.dmp

          Filesize

          276KB

        • memory/4132-133-0x0000000000400000-0x0000000000448000-memory.dmp

          Filesize

          288KB