Overview

overview

10

Static

static

7

81a7727e76...b5.exe

windows7-x64

10

81a7727e76...b5.exe

windows10-2004-x64

10

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General

  • Target

    81a7727e76f90154c8b0ea0f71b643ec5bbe31f88b9936fbcb788a9fd7b2bbb5.exe

  • Size

    4.4MB

  • Sample

    220907-n3m9hacab6

  • MD5

    1550960dfdbc26af42d1f99c406bad91

  • SHA1

    6c932a7374ed8550b0fdb09e31660d2b50345c4e

  • SHA256

    81a7727e76f90154c8b0ea0f71b643ec5bbe31f88b9936fbcb788a9fd7b2bbb5

  • SHA512

    5c82fc908670cb92f03c86b67f2febc8a54a42580d726447a9622fc3e2a06459bade850686cb92932fea3a1d3240b93c440b52121ad4d914c32012e8ce1808dc

  • SSDEEP

    98304:ADuU5pHTMY5akYvb4jmP2ifh8GiXLc/BCqfG:AV5FMMYvgi2M8/XLc5CqfG

Score
10/10
djvunymaimprivateloaderredlinesmokeloader3108_ruzkibackdoordiscoveryevasioninfostealerloadermainpersistenceransomwarespywarestealerthemidatrojanupx

Malware Config

Extracted

Family

privateloader

C2

http://163.123.143.4/proxies.txt

http://107.182.129.251/server.txt

pastebin.com/raw/A7dSG1te

http://wfsdragon.ru/api/setStats.php

163.123.143.12

http://91.241.19.125/pub.php?pub=one

http://sarfoods.com/index.php
Attributes
  • payload_url

    https://vipsofts.xyz/files/mega.bmp

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes
  • extension

    .mmvb

  • offline_id

    yd6oYv6aBN90yFzTWdZ34sXSXtXiauzOLXZyWht1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://acacaca.org/files/1/build3.exe

  • ransomnote

    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-xuPJqoyzQE 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: support@bestyourmail.ch Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0556Jhyjd

rsa_pubkey.plain

Extracted

Family

redline

Botnet

3108_RUZKI

C2

213.219.247.199:9452

Attributes
  • auth_value

    f71fed1cd094e4e1eb7ad1c53e542bca

Targets

    • Target

      81a7727e76f90154c8b0ea0f71b643ec5bbe31f88b9936fbcb788a9fd7b2bbb5.exe

    • Size

      4.4MB

    • MD5

      1550960dfdbc26af42d1f99c406bad91

    • SHA1

      6c932a7374ed8550b0fdb09e31660d2b50345c4e

    • SHA256

      81a7727e76f90154c8b0ea0f71b643ec5bbe31f88b9936fbcb788a9fd7b2bbb5

    • SHA512

      5c82fc908670cb92f03c86b67f2febc8a54a42580d726447a9622fc3e2a06459bade850686cb92932fea3a1d3240b93c440b52121ad4d914c32012e8ce1808dc

    • SSDEEP

      98304:ADuU5pHTMY5akYvb4jmP2ifh8GiXLc/BCqfG:AV5FMMYvgi2M8/XLc5CqfG

    Score
    10/10
    privateloaderevasionloaderspywarestealerthemidatrojandjvunymaimredlinesmokeloader3108_ruzkibackdoordiscoveryinfostealermainpersistenceransomwareupx

    • Detected Djvu ransomware

    • Detects Smokeloader packer

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • NyMaim

      NyMaim is a malware with various capabilities written in C++ and first seen in 2013.

      trojannymaim

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

      loaderprivateloader

    • RedLine

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

      infostealerredline

    • RedLine payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

      trojanbackdoorsmokeloader

    • Suspicious use of NtCreateUserProcessOtherParentProcess

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

      evasion

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • 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

      discovery

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Accesses 2FA software files, possible credential harvesting

      spywarestealer

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

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

      discovery

    • Checks whether UAC is enabled

      evasiontrojan

    • 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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Command-Line Interface

1
T1059

Persistence

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

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

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

8
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Remote System Discovery

1
T1018

Lateral Movement

Collection

Data from Local System

3
T1005

Exfiltration

Command and Control

Impact

Tasks