Resubmissions

11-09-2021 20:41

210911-zgxftsbgc5 10

11-09-2021 20:33

210911-zb49gsegcq 10

General

  • Target

    setup_x86_x64_install.exe

  • Size

    3.4MB

  • Sample

    210911-zgxftsbgc5

  • MD5

    f59a5fd82eaf0088e7853c09922ce477

  • SHA1

    969d1debc32996a4d53c4a36d2241511cb8b77ec

  • SHA256

    291505b584fdf540a1590ce7181d85cee7967f99cbf05aeb7b7031b6a9b4f2cd

  • SHA512

    344192b08874df2cf922f782400435f109eb5bab7c3c582f4eb3fe328cadcb2d2c3ddd02ba816663168f9c997766f089731e657afe2cefb7bda773e6e6dca71c

Malware Config

Extracted

Family

vidar

Version

40.5

Botnet

706

C2

https://gheorghip.tumblr.com/

Attributes
  • profile_id

    706

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

Extracted

Path

C:\_readme.txt

Family

djvu

Ransom Note
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-CtDpAM1g5f Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0333gSd743dfRiXRqq62TeogIfmpihYZJ6wDmuUVD07WwczX6Bm
URLs

https://we.tl/t-CtDpAM1g5f

Extracted

Family

vidar

Version

40.5

Botnet

517

C2

https://gheorghip.tumblr.com/

Attributes
  • profile_id

    517

Extracted

Family

vidar

Version

40.5

Botnet

993

C2

https://gheorghip.tumblr.com/

Attributes
  • profile_id

    993

Extracted

Family

metasploit

Version

windows/single_exec

Extracted

Family

vidar

Version

40.5

Botnet

328

C2

https://gheorghip.tumblr.com/

Attributes
  • profile_id

    328

Extracted

Family

redline

Botnet

119c4tv3

C2

185.215.113.104:18754

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://shellloader.com/welcome

Targets

    • Target

      setup_x86_x64_install.exe

    • Size

      3.4MB

    • MD5

      f59a5fd82eaf0088e7853c09922ce477

    • SHA1

      969d1debc32996a4d53c4a36d2241511cb8b77ec

    • SHA256

      291505b584fdf540a1590ce7181d85cee7967f99cbf05aeb7b7031b6a9b4f2cd

    • SHA512

      344192b08874df2cf922f782400435f109eb5bab7c3c582f4eb3fe328cadcb2d2c3ddd02ba816663168f9c997766f089731e657afe2cefb7bda773e6e6dca71c

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba Payload

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    • Modifies system executable filetype association

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • Registers COM server for autorun

    • ServHelper

      ServHelper is a backdoor written in Delphi and is associated with the hacking group TA505.

    • 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

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • rl_trojan

      redline stealer.

    • xmrig

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

    • Checks for common network interception software

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

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

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

    • Vidar Stealer

    • XMRig Miner Payload

    • 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

    • Modifies RDP port number used by Windows

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Sets DLL path for service in the registry

    • 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

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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

    • 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

static1

Score
N/A

behavioral1

djvuredlinesmokeloadersocelarsvidar706aspackv2backdoordiscoveryevasioninfostealerpersistenceransomwarespywarestealertrojan
Score
10/10

behavioral2

djvuraccoonredlinesmokeloadersocelarsvidar517706993aspackv2backdoordiscoveryevasioninfostealerpersistenceransomwarespywarestealertrojan
Score
10/10

behavioral3

djvuredlinesmokeloadersocelarsvidarxmrig706aspackv2backdoordiscoveryinfostealerminerransomwarestealertrojan
Score
10/10

behavioral4

djvugluptebametasploitredlinesmokeloadersocelarsvidarxmrig328706aspackv2backdoordiscoverydropperevasioninfostealerloaderminerpersistenceransomwarespywarestealertrojan
Score
10/10

behavioral5

redlinesocelarsvidarxmrig119c4tv3aspackv2discoveryevasioninfostealerminerpersistencespywarestealer
Score
10/10

behavioral6

redlineservhelpersmokeloadersocelarsvidarxmrig119c4tv3706aspackv2backdoordiscoveryevasioninfostealerminerpersistencespywarestealertrojan
Score
10/10

behavioral7

djvugluptebametasploitredlinesmokeloadersocelarsvidar119c4tv3706aspackv2backdoordiscoverydropperevasioninfostealerloaderpersistenceransomwarespywarestealertrojan
Score
10/10

behavioral8

redlineservhelpersmokeloadersocelarsvidarxmrig119c4tv3706aspackv2backdoordiscoveryevasioninfostealerminerpersistencespywarestealertrojan
Score
10/10

behavioral9

redlinesmokeloadersocelarsvidar119c4tv3706aspackv2backdoorinfostealerpersistencespywarestealertrojan
Score
10/10

behavioral10

djvuredlinesmokeloadersocelarsvidar119c4tv3706aspackv2backdoordiscoveryevasioninfostealerpersistenceransomwarespywarestealertrojan
Score
10/10