Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • 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.

  • 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\e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e.exe
    "C:\Users\Admin\AppData\Local\Temp\e69322aa3c2a06dc0c3695d98c4f093902e20d50b388f9bcba7ad41662b0224e.exe"
    1⤵
    • Checks processor information in registry
    PID:3604
  • 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:4236
  • 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:2756

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/3604-133-0x00000000007E8000-0x000000000080D000-memory.dmp

          Filesize

          148KB

        • memory/3604-134-0x00000000007E8000-0x000000000080D000-memory.dmp

          Filesize

          148KB

        • memory/3604-135-0x0000000000780000-0x00000000007C5000-memory.dmp

          Filesize

          276KB

        • memory/3604-136-0x0000000000400000-0x0000000000448000-memory.dmp

          Filesize

          288KB

        • memory/4236-130-0x000002A7F3730000-0x000002A7F3740000-memory.dmp

          Filesize

          64KB

        • memory/4236-131-0x000002A7F37A0000-0x000002A7F37B0000-memory.dmp

          Filesize

          64KB

        • memory/4236-132-0x000002A7F64B0000-0x000002A7F64B4000-memory.dmp

          Filesize

          16KB