Resubmissions

13-02-2021 11:21

210213-7tzhc75v52 10

13-02-2021 11:08

210213-tgl7w9bhm2 10

General

  • Target

    keygen-step-4.exe

  • Size

    6.8MB

  • Sample

    210213-7tzhc75v52

  • MD5

    38f1d6ddf7e39767157acbb107e03250

  • SHA1

    dcb0d5feacb80c1e4cbb71a30cff7edf10a185e8

  • SHA256

    97ada84ef77a3b45abd2e14caf519e06bbbad5a6ed180aa6ee543e38e9bce796

  • SHA512

    3ba909b5001a3b995ebe8f9dbd4ddb6506a5c66612cf43e94a50f72c543a9aa4828bbba224db807de10076c5e70fabf7cc31bf8e442a3f4cf26d95c7f7094c2d

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naritouzina.net/

http://nukaraguasleep.net/

http://notfortuaj.net/

http://natuturalistic.net/

http://zaniolofusa.net/

http://4zavr.com/upload/

http://zynds.com/upload/

http://atvua.com/upload/

http://detse.net/upload/

http://dsdett.com/upload/

http://dtabasee.com/upload/

http://yeronogles.monster/upload/

rc4.i32
rc4.i32

Extracted

Family

raccoon

Botnet

17694a35d42ac97e2cd3ebd196db01b372cce1b0

Attributes
  • url4cnc

    https://telete.in/o23felk0s

rc4.plain
rc4.plain

Extracted

Family

raccoon

Botnet

027bc1bb9168079d5f7473eee9c05ee06589c305

Attributes
  • url4cnc

    https://telete.in/jjbadb0y

rc4.plain
rc4.plain

Extracted

Family

metasploit

Version

windows/single_exec

Extracted

Family

smokeloader

Version

2019

C2

http://10022020newfolder1002002131-service1002.space/

http://10022020newfolder1002002231-service1002.space/

http://10022020newfolder3100231-service1002.space/

http://10022020newfolder1002002431-service1002.space/

http://10022020newfolder1002002531-service1002.space/

http://10022020newfolder33417-01242510022020.space/

http://10022020test125831-service1002012510022020.space/

http://10022020test136831-service1002012510022020.space/

http://10022020test147831-service1002012510022020.space/

http://10022020test146831-service1002012510022020.space/

http://10022020test134831-service1002012510022020.space/

http://10022020est213531-service100201242510022020.ru/

http://10022020yes1t3481-service1002012510022020.ru/

http://10022020test13561-service1002012510022020.su/

http://10022020test14781-service1002012510022020.info/

http://10022020test13461-service1002012510022020.net/

http://10022020test15671-service1002012510022020.tech/

http://10022020test12671-service1002012510022020.online/

http://10022020utest1341-service1002012510022020.ru/

http://10022020uest71-service100201dom2510022020.ru/

rc4.i32
rc4.i32

Targets

    • Target

      keygen-step-4.exe

    • Size

      6.8MB

    • MD5

      38f1d6ddf7e39767157acbb107e03250

    • SHA1

      dcb0d5feacb80c1e4cbb71a30cff7edf10a185e8

    • SHA256

      97ada84ef77a3b45abd2e14caf519e06bbbad5a6ed180aa6ee543e38e9bce796

    • SHA512

      3ba909b5001a3b995ebe8f9dbd4ddb6506a5c66612cf43e94a50f72c543a9aa4828bbba224db807de10076c5e70fabf7cc31bf8e442a3f4cf26d95c7f7094c2d

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba Payload

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    • PlugX

      PlugX is a RAT (Remote Access Trojan) that has been around since 2008.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • RedLine

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

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Windows security bypass

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Modifies boot configuration data using bcdedit

    • Nirsoft

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Possible attempt to disable PatchGuard

      Rootkits can use kernel patching to embed themselves in an operating system.

    • Sets service image path in registry

    • Suspicious Office macro

      Office document equipped with 4.0 macros.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Windows security modification

    • themida

      Detects Themida, Advanced Windows software protection system.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Enumerates physical storage devices

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks