Analysis

  • max time kernel
    184s
  • max time network
    192s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    08/02/2022, 18:57

General

  • Target

    16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe

  • Size

    666KB

  • MD5

    ec820293dd50d7cc377bbc3f86fdd9c4

  • SHA1

    4ef754aec7e36c38c5b5d9730a097b76438bae53

  • SHA256

    16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001

  • SHA512

    b5c3d7a0358ddc70250c37b717e0ef428a62880597118461aa6a7ffa0ef6d992798f3bd0862ccbd13e0dab3f88a87a2fb2f0388334e6a306af3f7d346247f2a6

Malware Config

Extracted

Family

cryptbot

C2

leribis04.top

moraffdd04.top

Attributes
  • payload_url

    http://fsdvddrttload01.top/download.php?file=lm.exe

Signatures

  • CryptBot

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

  • CryptBot Payload 2 IoCs
  • 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 7 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 9 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe
    "C:\Users\Admin\AppData\Local\Temp\16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of FindShellTrayWindow
    PID:1760
  • 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:700
  • 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:2508

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/700-133-0x000001EA00760000-0x000001EA00770000-memory.dmp

          Filesize

          64KB

        • memory/700-134-0x000001EA00D20000-0x000001EA00D30000-memory.dmp

          Filesize

          64KB

        • memory/700-135-0x000001EA033D0000-0x000001EA033D4000-memory.dmp

          Filesize

          16KB

        • memory/1760-130-0x0000000002950000-0x00000000029B7000-memory.dmp

          Filesize

          412KB

        • memory/1760-131-0x0000000000D80000-0x0000000000E20000-memory.dmp

          Filesize

          640KB

        • memory/1760-132-0x0000000000400000-0x00000000004A4000-memory.dmp

          Filesize

          656KB