Friday, June 14, 2024

Shade Ransomware Attack Enterprise Networks through Weaponized PDF Files & Malspam Emails

Shade Ransomware emerged in late 2014; it includes malicious spam emails or exploits kits as their primary attack vectors. In a recent campaign, hackers abuses CMS such as WordPress and Joomla Sites to host the Shade Ransomware payload.

According to Palo Alto report, the following are the top countries affected by the ransomware strain that includes the United States, Japan, India, Thailand, and Canada. The top industries affected are High-Tech, Wholesale, and Education.

The ransomware delivered through malicious spam emails focused on Russian and English language Emails. The email poses to be as an invoice or bill.

When comparing with EXE samples since 2016, there are no remarkable changes; it was first reported as Troldesh in late 2014.

Shade Ransomware Infection

When shade infects a windows machine it places a desktop background announces that this system has been encrypted and creates a text file named readme1.txt through README10.txt.Once it encrypted file it appends [.]crypted000007] extension.

Shade Ransomware
Infected Desktop Background

The infection involves a .js or PDF file disguised as an invoice or bill that contains links to download the Shade ransomware payload from the compromised servers.

Shade Ransomware
Infection Chain

The downloaded payload is the Shade/Troldesh ransomware that encrypts all the users file with AES-256 and appends a filename(.ID_of_infected_machine.crypted000007).

It looks for following file extension to encrypt in local, network and USB drives.

.1cd, .3ds, .3fr, .3g2, .3gp, .7z, .accda, .accdb, .accdc, .accde, .accdt, .accdw, .adb, .adp, .ai, .ai3, .ai4, .ai5, .ai6, .ai7, .ai8, .anim, .arw, .as, .asa, .asc, .ascx, .asm, .asmx, .asp, .aspx, .asr, .asx, .avi, .avs, .backup, .bak, .bay, .bd, .bin, .bmp, .bz2, .c, .cdr, .cer, .cf, .cfc, .cfm, .cfml, .cfu, .chm, .cin, .class, .clx, .config, .cpp, .cr2, .crt, .crw, .cs, .css, .csv, .cub, .dae, .dat, .db, .dbf, .dbx, .dc3, .dcm, .dcr, .der, .dib, .dic, .dif, .divx, .djvu, .dng, .doc, .docm, .docx, .dot, .dotm, .dotx, .dpx, .dqy, .dsn, .dt, .dtd, .dwg, .dwt, .dx, .dxf, .edml, .efd, .elf, .emf, .emz, .epf, .eps, .epsf, .epsp, .erf, .exr, .f4v, .fido, .flm, .flv, .frm, .fxg, .geo, .gif, .grs, .gz, .h, .hdr, .hpp, .hta, .htc, .htm, .html, .icb, .ics, .iff, .inc, .indd, .ini, .iqy, .j2c, .j2k, .java, .jp2, .jpc, .jpe, .jpeg, , .jpf, .jpg, .jpx, .js, .jsf, .json, .jsp, .kdc, .kmz, .kwm, .lasso, .lbi, .lgf, .lgp, .log, .m1v, .m4a, .m4v, .max, .md, .mda, .mdb, .mde, .mdf, .mdw, .mef, .mft, .mfw, .mht, .mhtml, .mka, .mkidx, .mkv, .mos, .mov, .mp3, .mp4, .mpeg, .mpg, .mpv, .mrw, .msg, .mxl, .myd, .myi, .nef, .nrw, .obj, .odb, .odc, .odm, .odp, .ods, .oft, .one, .onepkg, .onetoc2, .opt, .oqy, .orf, .p12, .p7b, .p7c, .pam, .pbm, .pct, .pcx, .pdd, .pdf, .pdp, .pef, .pem, .pff, .pfm, .pfx, .pgm, .php, .php3, .php4, .php5, .phtml, .pict, .pl, .pls, .pm, .png, .pnm, .pot, .potm, .potx, .ppa, .ppam, .ppm, .pps, .ppsm, .ppt, .pptm, .pptx, .prn, .ps, .psb, .psd, .pst, .ptx, .pub, .pwm, .pxr, .py, .qt, .r3d, .raf, .rar, .raw, .rdf, .rgbe, .rle, .rqy, .rss, .rtf, .rw2, .rwl, .safe, .sct, .sdpx, .shtm, .shtml, .slk, .sln, .sql, .sr2, .srf, .srw, .ssi, .st, .stm, .svg, .svgz, .swf, .tab, .tar, .tbb, .tbi, .tbk, .tdi, .tga, .thmx, .tif, .tiff, .tld, .torrent, .tpl, .txt, .u3d, .udl, .uxdc, .vb, .vbs, .vcs, .vda, .vdr, .vdw, .vdx, .vrp, .vsd, .vss, .vst, .vsw, .vsx, .vtm, .vtml, .vtx, .wb2, .wav, .wbm, .wbmp, .wim, .wmf, .wml, .wmv, .wpd, .wps, .x3f, .xl, .xla, .xlam, .xlk, .xlm, .xls, .xlsb, .xlsm, .xlsx, .xlt, .xltm, .xltx, .xlw, .xml, .xps, .xsd, .xsf, .xsl, .xslt, .xsn, .xtp, .xtp2, .xyze, .xz, and .zip

“Malspam-based Shade infection chains have one thing in common. They all involve retrieving an executable file from a compromised server. By focusing on the executable in this chain of events, we can determine where Shade ransomware infection attempts have occurred,” Brad Duncan.

According to Palo Alto search results between January through March 2019 reveals that 307 Shade ransomware samples over 6,536 sessions, and here are the top locations.

  • United States – 2,010 sessions
  • Japan – 1,677 sessions
  • India – 989 sessions
  • Thailand – 723 sessions
  • Canada – 712 sessions
  • Spain – 505 sessions
  • Russian Federation – 86 sessions
  • France – 71 sessions
  • United Kingdom – 67 sessions
  • Kazakhstan – 21 sessions
Shade Ransomware
Affected Regions

Top Industries affected

  • High Tech: 5,009 sessions
  • Wholesale and Retail: 722 sessions
  • Education: 720 sessions
  • Telecommunications: 311 sessions
  • Finance: 51 sessions
  • Transportation and Logistics: 24 sessions
  • Manufacturing: 32 sessions
  • Professional and Legal Services: 8 sessions
  • Utilities and Energy: 4 sessions
  • State and Local Government: 1 session

Ransomware campaigns will continue to grow in numbers, but not all campaigns would be competent enough to last long. In Jan 2017, there were 635 campaigns, in Feb 2018 it was 1105, and in Jan 2019 it was 1453.

Indicator of Compromise

73 recent SHA256 file hashes for Shade ransomware
203 recent URLs that returned Shade ransomware

Here you can find the Ransomware Attack Response and Mitigation Checklist.

Website

Latest articles

Sleepy Pickle Exploit Let Attackers Exploit ML Models And Attack End-Users

Hackers are targeting, attacking, and exploiting ML models. They want to hack into these...

SolarWinds Serv-U Vulnerability Let Attackers Access sensitive files

SolarWinds released a security advisory for addressing a Directory Traversal vulnerability which allows a...

Smishing Triad Hackers Attacking Online Banking, E-Commerce AND Payment Systems Customers

Hackers often attack online banking platforms, e-commerce portals, and payment systems for illicit purposes.Resecurity...

Threat Actor Claiming Leak Of 5 Million Ecuador’s Citizen Database

A threat actor has claimed responsibility for leaking the personal data of 5 million...

Ascension Hack Caused By an Employee Who Downloaded a Malicious File

Ascension, a leading healthcare provider, has made significant strides in its investigation and recovery...

AWS Announced Malware Detection Tool For S3 Buckets

Amazon Web Services (AWS) has announced the general availability of Amazon GuardDuty Malware Protection...

Hackers Exploiting MS Office Editor Vulnerability to Deploy Keylogger

Researchers have identified a sophisticated cyberattack orchestrated by the notorious Kimsuky threat group.The...
Guru baran
Guru baranhttps://gbhackers.com
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Free Webinar

API Vulnerability Scanning

71% of the internet traffic comes from APIs so APIs have become soft targets for hackers.Securing APIs is a simple workflow provided you find API specific vulnerabilities and protect them.In the upcoming webinar, join Vivek Gopalan, VP of Products at Indusface as he takes you through the fundamentals of API vulnerability scanning..
Key takeaways include:

  • Scan API endpoints for OWASP API Top 10 vulnerabilities
  • Perform API penetration testing for business logic vulnerabilities
  • Prioritize the most critical vulnerabilities with AcuRisQ
  • Workflow automation for this entire process

Related Articles