Analysis

  • max time kernel
    152s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    05-01-2022 08:19

General

  • Target

    975feaa8efd0fd8c5710652abc197e2c.exe

  • Size

    2.6MB

  • MD5

    975feaa8efd0fd8c5710652abc197e2c

  • SHA1

    496a40eb59fed8322803c276fbd3cd1624f15e24

  • SHA256

    7ebd75f04be7424a2c2faa8be74538af662198fcd6c88bbeb4c99df4991ac06d

  • SHA512

    5390a8c3cf049a60610d101299f092ddfaf3e1856dff1b87643bfd6d17d2a7b8690b3cb898659e61d2752785ad3aae3e874aea670944e9ccf8846185b0525549

Malware Config

Extracted

Family

cryptbot

C2

zyobyd22.top

moreja02.top

Attributes
  • payload_url

    http://yaphsq02.top/download.php?file=cantey.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\975feaa8efd0fd8c5710652abc197e2c.exe
    "C:\Users\Admin\AppData\Local\Temp\975feaa8efd0fd8c5710652abc197e2c.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:2340

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2340-115-0x0000000000D10000-0x00000000013F3000-memory.dmp
    Filesize

    6.9MB

  • memory/2340-116-0x0000000000D10000-0x00000000013F3000-memory.dmp
    Filesize

    6.9MB

  • memory/2340-117-0x0000000000D10000-0x00000000013F3000-memory.dmp
    Filesize

    6.9MB

  • memory/2340-118-0x0000000077300000-0x000000007748E000-memory.dmp
    Filesize

    1.6MB

  • memory/2340-119-0x0000000000D10000-0x00000000013F3000-memory.dmp
    Filesize

    6.9MB