Analysis

  • max time kernel
    147s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    17/01/2022, 03:50

General

  • Target

    f460acfcc99c9338b3f5fb3793f6cbb15daf76c2a79fd05f7398af5346150801.exe

  • Size

    2.6MB

  • MD5

    1d00723292d3b8bda50c59d040c27087

  • SHA1

    76aedfcff7e298d862354db00ee2c4575da72b42

  • SHA256

    f460acfcc99c9338b3f5fb3793f6cbb15daf76c2a79fd05f7398af5346150801

  • SHA512

    03ef6b83ccff99155be15ca8ac83bb2ada8570a1f5dfbf983db7c6fc6220ca8aa1555988dc72fb08a39ac6d73f8c77c75cdd875249912f9db720a2d5bcbad76a

Malware Config

Extracted

Family

cryptbot

C2

zyoyol62.top

morpsy06.top

Attributes
  • payload_url

    http://yapcbx08.top/download.php?file=inrhed.exe

Signatures

  • CryptBot

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

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Themida packer 4 IoCs

    Detects Themida, an advanced Windows software protection system.

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 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 behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f460acfcc99c9338b3f5fb3793f6cbb15daf76c2a79fd05f7398af5346150801.exe
    "C:\Users\Admin\AppData\Local\Temp\f460acfcc99c9338b3f5fb3793f6cbb15daf76c2a79fd05f7398af5346150801.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3600

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/3600-115-0x0000000000B30000-0x0000000001218000-memory.dmp

          Filesize

          6.9MB

        • memory/3600-116-0x0000000000B30000-0x0000000001218000-memory.dmp

          Filesize

          6.9MB

        • memory/3600-117-0x0000000000B30000-0x0000000001218000-memory.dmp

          Filesize

          6.9MB

        • memory/3600-118-0x0000000000B30000-0x0000000001218000-memory.dmp

          Filesize

          6.9MB

        • memory/3600-119-0x00000000778D0000-0x0000000077A5E000-memory.dmp

          Filesize

          1.6MB