General

  • Target

    7b3bfb77436a87503e8eeafc42f2fc33.exe

  • Size

    320KB

  • Sample

    220115-wfqp4sehd2

  • MD5

    7b3bfb77436a87503e8eeafc42f2fc33

  • SHA1

    0db66a7739019d19172c1c2dbd20825c57d71280

  • SHA256

    7bb2b1bde2885ba454aff6f89d37b36a7132a643c297d4f3fd3e58fbfeceec08

  • SHA512

    d62c660eacee1fa25985583d4fe01fe70fe1c0cebb57bf615d2bcf5dfc0dd31ccb8248ca058d66256e569134f54988313c9f4599625c2528884f9c3658874c30

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

http://srtuiyhuali.at/

http://fufuiloirtu.com/

http://amogohuigotuli.at/

http://novohudosovu.com/

http://brutuilionust.com/

http://bubushkalioua.com/

http://dumuilistrati.at/

http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

arkei

Botnet

Default

C2

http://file-file-host4.com/tratata.php

Extracted

Family

tofsee

C2

patmushta.info

parubey.info

Extracted

Family

raccoon

Version

1.8.4-hotfixs

rc4.plain

Targets

    • Target

      7b3bfb77436a87503e8eeafc42f2fc33.exe

    • Size

      320KB

    • MD5

      7b3bfb77436a87503e8eeafc42f2fc33

    • SHA1

      0db66a7739019d19172c1c2dbd20825c57d71280

    • SHA256

      7bb2b1bde2885ba454aff6f89d37b36a7132a643c297d4f3fd3e58fbfeceec08

    • SHA512

      d62c660eacee1fa25985583d4fe01fe70fe1c0cebb57bf615d2bcf5dfc0dd31ccb8248ca058d66256e569134f54988313c9f4599625c2528884f9c3658874c30

    • Arkei

      Arkei is an infostealer written in C++.

    • Modifies WinLogon for persistence

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Tofsee

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

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Arkei Stealer Payload

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Installed Components in the registry

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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.

    • 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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks