Analysis

  • max time kernel
    169s
  • max time network
    182s
  • platform
    windows10_x64
  • resource
    win10-en-20211104
  • submitted
    08-11-2021 10:07

General

  • Target

    500e7e5c009d6087e16c49251fe574108267633fa8a0a72b489e07a7056ae644.exe

  • Size

    3MB

  • MD5

    e635ed70bbc424514a872445893b1574

  • SHA1

    97b3796c29853ef58955a1e06c5e6b1f02a0dd7e

  • SHA256

    500e7e5c009d6087e16c49251fe574108267633fa8a0a72b489e07a7056ae644

  • SHA512

    cded0958181fcb4c36b1aaccff193590eba0c6d92e8c4e0e089d7560cf79947112d6ef64550bdff2eb77ee2e089e8f8b79465dfb4b2f100fe7515209e0b03b0b

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://directorycart.com/upload/

http://tierzahnarzt.at/upload/

http://streetofcards.com/upload/

http://ycdfzd.com/upload/

http://successcoachceo.com/upload/

http://uhvu.cn/upload/

http://japanarticle.com/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

media18

C2

91.121.67.60:2151

Extracted

Family

redline

Botnet

fucker2

C2

135.181.129.119:4805

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • suricata: ET MALWARE ClipBanker Variant Activity (POST)

    suricata: ET MALWARE ClipBanker Variant Activity (POST)

  • suricata: ET MALWARE Win32/Unk.HRESQ! MultiDownloader Checkin

    suricata: ET MALWARE Win32/Unk.HRESQ! MultiDownloader Checkin

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • ASPack v2.12-2.42 6 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 26 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 14 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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
  • Drops Chrome extension 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 6 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 3 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Kills process with taskkill 2 IoCs
  • Modifies data under HKEY_USERS 17 IoCs
  • Modifies registry class 18 IoCs