Resubmissions

09-09-2021 17:41

210909-v9lgtabfhq 10

09-09-2021 04:26

210909-e21nrsfee3 10

08-09-2021 21:37

210908-1gnpcsfbc9 10

08-09-2021 21:29

210908-1bx1vafbc5 10

08-09-2021 13:52

210908-q6fd6shgdj 10

07-09-2021 18:07

210907-wqa3eagcgr 10

General

  • Target

    setup_x86_x64_install.exe

  • Size

    2.9MB

  • Sample

    210909-e21nrsfee3

  • MD5

    3f1f81101d0ce95fdfac97f5913cd662

  • SHA1

    8e615a64e4d72b08926242b7d73a608bdd7e9fce

  • SHA256

    90aa6a7c770f2c0f49596731c80fda7d044802dea9e905ff999b39cda5428407

  • SHA512

    a776c1f8636ef90d294becf8d09a45366463364026837c19e13227c1c5c9a6656b6fa525e0eec5a1a46997b6ef7066e958c02523a7c4538d046f8b2091145285

Malware Config

Extracted

Family

vidar

Version

40.5

Botnet

706

C2

https://gheorghip.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family

vidar

Version

40.5

Botnet

916

C2

https://gheorghip.tumblr.com/

Attributes
  • profile_id

    916

Extracted

Family

redline

Botnet

Jayson

C2

95.181.172.207:56915

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://shellloader.com/welcome

Extracted

Family

smokeloader

Version

2020

C2

http://varmisende.com/upload/

http://fernandomayol.com/upload/

http://nextlytm.com/upload/

http://people4jan.com/upload/

http://asfaltwerk.com/upload/

rc4.i32
rc4.i32

Targets

    • Target

      setup_x86_x64_install.exe

    • Size

      2.9MB

    • MD5

      3f1f81101d0ce95fdfac97f5913cd662

    • SHA1

      8e615a64e4d72b08926242b7d73a608bdd7e9fce

    • SHA256

      90aa6a7c770f2c0f49596731c80fda7d044802dea9e905ff999b39cda5428407

    • SHA512

      a776c1f8636ef90d294becf8d09a45366463364026837c19e13227c1c5c9a6656b6fa525e0eec5a1a46997b6ef7066e958c02523a7c4538d046f8b2091145285

    • 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.

    • Socelars

      Socelars is an infostealer targeting browser cookies and credit card credentials.

    • Socelars Payload

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • rl_trojan

      redline stealer.

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

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

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • 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.

    • Themida packer

      Detects Themida, an 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks