Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • 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.

  • 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\9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759.exe
    "C:\Users\Admin\AppData\Local\Temp\9e49a8f52736cb6b803f257a124cb6c86ab7d3eb8219e2a7a8df5820dc91b759.exe"
    1⤵
    • Checks processor information in registry
    PID:2792
  • 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:4288
  • 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:3112

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2792-130-0x0000000000990000-0x00000000009B5000-memory.dmp

          Filesize

          148KB

        • memory/2792-131-0x0000000000D00000-0x0000000000D45000-memory.dmp

          Filesize

          276KB

        • memory/2792-132-0x0000000000400000-0x0000000000448000-memory.dmp

          Filesize

          288KB

        • memory/4288-133-0x00000265B0960000-0x00000265B0970000-memory.dmp

          Filesize

          64KB

        • memory/4288-134-0x00000265B1020000-0x00000265B1030000-memory.dmp

          Filesize

          64KB

        • memory/4288-135-0x00000265B36E0000-0x00000265B36E4000-memory.dmp

          Filesize

          16KB