Resubmissions

01-11-2021 20:09

211101-yw5kbaafg5 10

01-11-2021 07:13

211101-h2lrdsdhhj 10

01-11-2021 06:40

211101-hfpk6adhfj 10

31-10-2021 18:27

211031-w3r7fsdafj 10

31-10-2021 14:10

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31-10-2021 06:36

211031-hczxqacddp 10

31-10-2021 06:23

211031-g5wv4affb3 10

General

  • Target

    setup_x86_x64_install.exe

  • Size

    4.5MB

  • Sample

    211031-g5wv4affb3

  • MD5

    3da25ccfa9c258e3ae26854391531c7b

  • SHA1

    1ed5613b0ad8ab4c47f07e52199a4edd27be40e6

  • SHA256

    62be0ca52ea9ebc4c577d597b919f6b90cebdcc2179d7d482a04bf5731eec720

  • SHA512

    defed576df3d8325259884b485a0dc7cd673c47028e77f189255e27dca312a0befdc8dc84106cc3103a3027e67a835fad899f9361076a64831db144354a4618c

Malware Config

Extracted

Family

redline

Botnet

srtupdate33

C2

135.181.129.119:4805

Extracted

Family

smokeloader

Version

2020

C2

http://brandyjaggers.com/upload/

http://andbal.com/upload/

http://alotofquotes.com/upload/

http://szpnc.cn/upload/

http://uggeboots.com/upload/

http://100klv.com/upload/

http://rapmusic.at/upload/

rc4.i32
rc4.i32

Extracted

Family

vidar

Version

41.6

Botnet

933

C2

https://mas.to/@lilocc

Attributes
  • profile_id

    933

Targets

    • Target

      setup_x86_x64_install.exe

    • Size

      4.5MB

    • MD5

      3da25ccfa9c258e3ae26854391531c7b

    • SHA1

      1ed5613b0ad8ab4c47f07e52199a4edd27be40e6

    • SHA256

      62be0ca52ea9ebc4c577d597b919f6b90cebdcc2179d7d482a04bf5731eec720

    • SHA512

      defed576df3d8325259884b485a0dc7cd673c47028e77f189255e27dca312a0befdc8dc84106cc3103a3027e67a835fad899f9361076a64831db144354a4618c

    • 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.

    • 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.

    • 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

    • Adds policy Run key to start application

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Windows Firewall

    • 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 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.

    • 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