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General

  • Target

    71E2CF4709767EAB8E0E6DCD8F19D37C.exe

  • Size

    5.2MB

  • Sample

    210826-ylmpk9586e

  • MD5

    71e2cf4709767eab8e0e6dcd8f19d37c

  • SHA1

    0641acedc06c13a17d94968e3237c4d9533fc0b9

  • SHA256

    077ac4018bc25a85796c54e06872071d561df272188dde34daca7e5d01e950fd

  • SHA512

    686cae3db08ad1c7beaf13758a74cae4eb4084d152be49510c11a13010cbb27a1407657fab57d0d732648e91e21862c0604a9ad789e55bcac803fc7be6b4b675

Malware Config

Extracted

Family

redline

Botnet

pub1

C2

viacetequn.site:80

Extracted

Family

smokeloader

Version

2020

C2

http://aucmoney.com/upload/

http://thegymmum.com/upload/

http://atvcampingtrips.com/upload/

http://kuapakualaman.com/upload/

http://renatazarazua.com/upload/

http://nasufmutlu.com/upload/

rc4.i32
rc4.i32

Extracted

Family

vidar

Version

40.1

Botnet

706

C2

https://eduarroma.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family

xloader

Version

2.3

Campaign

ec33

C2

http://www.chaturvedi.fyi/ec33/

Decoy

ride-hard.net

westindiesofficial.com

technewcomer.com

anwen.ink

smarthumanresource.com

aspenhillgetaway.com

westinventures.com

sercomp.pro

fitwoop.com

advertisingviews.site

stinato.com

kidsfundshoes.com

xaufuture.com

emaildesktophelp.com

hey-events.com

v-j9.com

eurekabox.net

export-rice.net

arcadems.com

thejackparker.com

Targets

    • Target

      71E2CF4709767EAB8E0E6DCD8F19D37C.exe

    • Size

      5.2MB

    • MD5

      71e2cf4709767eab8e0e6dcd8f19d37c

    • SHA1

      0641acedc06c13a17d94968e3237c4d9533fc0b9

    • SHA256

      077ac4018bc25a85796c54e06872071d561df272188dde34daca7e5d01e950fd

    • SHA512

      686cae3db08ad1c7beaf13758a74cae4eb4084d152be49510c11a13010cbb27a1407657fab57d0d732648e91e21862c0604a9ad789e55bcac803fc7be6b4b675

    • Formbook

      Formbook is a data stealing malware which is capable of stealing data.

    • Modifies Windows Defender Real-time Protection settings

    • Process spawned unexpected child process

      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

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Xloader

      Xloader is a rebranded version of Formbook malware.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

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

    • Vidar Stealer

    • Xloader Payload

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Adds policy Run key to start application

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • 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

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks