37b6a0a0b3ee21d33fcdd3cea388e67f

General
Target

37b6a0a0b3ee21d33fcdd3cea388e67f

Size

232KB

Sample

211021-mpymmsbacn

Score
10 /10
MD5

37b6a0a0b3ee21d33fcdd3cea388e67f

SHA1

236eb8ab28cce563bcb05c38e051d418f237a725

SHA256

f4f625c6ec130389122077c9650b1c195a7793a173a621416cea8622c14405fc

SHA512

d3f087a9a1101d1450fc037be5debd9ef679ee8c3e93749e1d4b7dcba4a306bcf4e9c9a7dea7a3768f07f7b3534e84a5ccb9ed9bc13136370391859c26877447

Malware Config

Extracted

Family smokeloader
Version 2020
C2

http://nusurtal4f.net/

http://netomishnetojuk.net/

http://escalivrouter.net/

http://nick22doom4.net/

http://wrioshtivsio.su/

http://nusotiso4.su/

http://rickkhtovkka.biz/

http://palisotoliso.net/

rc4.i32
rc4.i32

Extracted

Family vidar
Version 41.5
Botnet 706
C2

https://mas.to/@xeroxxx

Attributes
profile_id
706

Extracted

Family vidar
Version 41.5
Botnet 517
C2

https://mas.to/@xeroxxx

Attributes
profile_id
517

Extracted

Family djvu
C2

http://rlrz.org/lancer

Targets
Target

37b6a0a0b3ee21d33fcdd3cea388e67f

MD5

37b6a0a0b3ee21d33fcdd3cea388e67f

Filesize

232KB

Score
10 /10
SHA1

236eb8ab28cce563bcb05c38e051d418f237a725

SHA256

f4f625c6ec130389122077c9650b1c195a7793a173a621416cea8622c14405fc

SHA512

d3f087a9a1101d1450fc037be5debd9ef679ee8c3e93749e1d4b7dcba4a306bcf4e9c9a7dea7a3768f07f7b3534e84a5ccb9ed9bc13136370391859c26877447

Tags

Signatures

  • Detected Djvu ransomware

  • Djvu Ransomware

    Description

    Ransomware which is a variant of the STOP family.

    Tags

  • SmokeLoader

    Description

    Modular backdoor trojan in use since 2014.

    Tags

  • Vidar

    Description

    Vidar is an infostealer based on Arkei stealer.

    Tags

  • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    Description

    suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    Tags

  • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    Description

    suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    Tags

  • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    Description

    suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    Tags

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    Description

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    Tags

  • Vidar Stealer

    Tags

  • Downloads MZ/PE file

  • Executes dropped EXE

  • Deletes itself

  • Loads dropped DLL

  • Modifies file permissions

    Tags

    TTPs

    File Permissions Modification
  • Reads user/profile data of web browsers

    Description

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

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Accesses 2FA software files, possible credential harvesting

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Accesses cryptocurrency files/wallets, possible credential harvesting

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Adds Run key to start application

    Tags

    TTPs

    Registry Run Keys / Startup Folder Modify Registry
  • Checks installed software on the system

    Description

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

    Tags

    TTPs

    Query Registry
  • Looks up external IP address via web service

    Description

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

  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix
Command and Control
    Credential Access
    Execution
      Exfiltration
        Impact
          Initial Access
            Lateral Movement
              Privilege Escalation