Resubmissions

23-09-2021 21:08

210923-zyzyaafbfr 10

22-09-2021 10:40

210922-mqyzssehck 10

22-09-2021 05:21

210922-f114ksecck 10

21-09-2021 05:29

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20-09-2021 21:51

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20-09-2021 19:44

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20-09-2021 08:28

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20-09-2021 04:42

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20-09-2021 04:42

210920-fb2zksfecr 10

General

  • Target

    setup_x86_x64_install.exe

  • Size

    4.0MB

  • Sample

    210922-f114ksecck

  • MD5

    73491325fde5366b31c09da701d07dd6

  • SHA1

    a4e1ada57e590c2df30fc26fad5f3ca57ad922b1

  • SHA256

    56a461a6cc8ad9c10cdc1d19a12d5deceb9ebefb0c871a3fc2eb83c466947a11

  • SHA512

    28b5008c542e9c486529934f74774d6d2de4b98531483b24c3c7cf82bf2214b959a1feb0085014026dd278d2a18ac6ae8a0e5a7ebb36be28abf6dccbf2d38e88

Malware Config

Extracted

Family

vidar

Version

40.7

Botnet

706

C2

https://petrenko96.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

Language
ps1
Deobfuscated
URLs
exe.dropper

https://dl.uploadgram.me/614a3a444b4bbh?raw

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://dl.uploadgram.me/61478eaa88d99h?raw

Extracted

Family

redline

Botnet

janesam

C2

65.108.20.195:6774

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-vtoEIhR0SI 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: manager@mailtemp.ch Reserve e-mail address to contact us: managerhelper@airmail.cc Your personal ID: 0334gSd743d99p8vN1UYnRVfJrLk31VTLd69Ni5b0ex99QMQKt1
Emails

manager@mailtemp.ch

managerhelper@airmail.cc

URLs

https://we.tl/t-vtoEIhR0SI

Extracted

Family

redline

Botnet

219qwe

C2

185.215.113.104:18754

Targets

    • Target

      setup_x86_x64_install.exe

    • Size

      4.0MB

    • MD5

      73491325fde5366b31c09da701d07dd6

    • SHA1

      a4e1ada57e590c2df30fc26fad5f3ca57ad922b1

    • SHA256

      56a461a6cc8ad9c10cdc1d19a12d5deceb9ebefb0c871a3fc2eb83c466947a11

    • SHA512

      28b5008c542e9c486529934f74774d6d2de4b98531483b24c3c7cf82bf2214b959a1feb0085014026dd278d2a18ac6ae8a0e5a7ebb36be28abf6dccbf2d38e88

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • 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

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

      suricata: ET MALWARE DNS Query Sinkhole Domain Various Families (Possible Infected Host)

    • suricata: ET MALWARE JS/Nemucod requesting EXE payload 2016-02-01

      suricata: ET MALWARE JS/Nemucod requesting EXE payload 2016-02-01

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

      suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    • suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

      suricata: ET MALWARE Sharik/Smoke CnC Beacon 11

    • suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

      suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)

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

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

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

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

      suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    • suricata: ET MALWARE Win32/Adware.Agent.NSU CnC Activity

      suricata: ET MALWARE Win32/Adware.Agent.NSU CnC Activity

    • suricata: ET MALWARE Win32/Adware.Agent.NSU CnC Activity M2

      suricata: ET MALWARE Win32/Adware.Agent.NSU CnC Activity M2

    • 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

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • 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.

    • Drops startup file

    • 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.

    • 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 for any installed AV software in registry

    • 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

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • 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 Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

2
T1031

New Service

1
T1050

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

BITS Jobs

1
T1197

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

File Permissions Modification

1
T1222

BITS Jobs

1
T1197

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

4
T1081

Discovery

Software Discovery

1
T1518

Query Registry

8
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

8
T1082

Security Software Discovery

1
T1063

Peripheral Device Discovery

2
T1120

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Tasks

static1

Score
N/A

behavioral1

redlinesmokeloadersocelarsvidar706aspackv2backdoorinfostealerspywarestealersuricatathemidatrojan
Score
10/10

behavioral2

djvuredlinesmokeloadersocelarstofseevidar706aspackv2backdoordiscoveryevasioninfostealerpersistenceransomwarespywarestealersuricatathemidatrojan
Score
10/10

behavioral3

redlinesmokeloadersocelarsvidaraspackv2backdoordiscoveryinfostealerspywarestealersuricatathemidatrojan
Score
10/10

behavioral4

redlinesocelarsvidarjanesamaspackv2discoveryevasioninfostealerpersistencespywarestealersuricatatrojan
Score
10/10

behavioral5

redlinesmokeloadersocelarstofseevidar706janesamaspackv2backdoordiscoveryevasioninfostealerpersistencespywarestealersuricatathemidatrojan
Score
10/10

behavioral6

redlinesmokeloadersocelarstofseevidar706janesamaspackv2backdoordiscoveryevasioninfostealerpersistencespywarestealersuricatatrojan
Score
10/10

behavioral7

djvuredlinesmokeloadersocelarsvidar219qwe706janesamaspackv2backdoordiscoveryevasioninfostealerpersistenceransomwarespywarestealersuricatathemidatrojan
Score
10/10

behavioral8

redlinesmokeloadersocelarsvidar706janesamaspackv2backdoordiscoveryevasioninfostealerpersistencespywarestealersuricatathemidatrojan
Score
10/10