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A Day In Cybercrime: May 31, 2026

Kirk
6 min read
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A Day In Cybercrime with DERP delivers daily cybercrime and threat intelligence overviews, covering news, package manager malware, ransomware claims, C2 observations, and infrastructure.

News

Palo Alto GlobalProtect VPN auth bypass flaw now exploited in attacks

Bleeping Computer (opens in new tab) | May 30 at 3:02 PM Eastern

Palo Alto Networks warned that CVE-2026-0257, a PAN-OS GlobalProtect authentication bypass flaw, is now under active exploitation. Operators should verify that their GlobalProtect portals and gateways are patched against unauthorized VPN connections.

Bleeping Computer (opens in new tab) | today at 6:02 AM Eastern

Threat actors are abusing ChatGPT's share link feature to host fake OpenAI outage pages that deliver malware via Google ads. The LLMShare campaign uses legitimate chatgpt.com URLs to bypass security filters.

California AG sues 23andMe over 2023 breach exposing health data

Bleeping Computer (opens in new tab) | today at 6:02 AM Eastern

California's Attorney General sued 23andMe over the 2023 breach that exposed nearly 7 million customers' sensitive data, including 855,541 Californians. The lawsuit highlights the long tail of regulatory consequences from credential theft and data leaks.

New Russia-Linked GREYVIBE Targets Ukraine with AI-Powered Cyberattacks

The Hacker News (opens in new tab) | today at 6:02 AM Eastern

A new Russian-linked threat actor, GREYVIBE, is targeting Ukrainian entities with AI-powered spear-phishing, fake captcha pages, and fraudulent adult websites. The group's custom obfuscators and loaders show overlap with the broader Russian cybercrime ecosystem.

BTMOB Android malware service generates custom phishing payloads

Bleeping Computer (opens in new tab) | today at 6:02 AM Eastern

BTMOB, an Android RAT sold as a malware-as-a-service platform, includes a builder interface for generating custom phishing payloads without coding. Operators should watch for APKs requesting excessive permissions and disabling Google Play Protect.

Package Manager Malware

OSV reported 48 MAL advisories across repositories: PyPI: 3, npm: 45.

That covers 48 packages across 2 repositories.

4 promoted hosts were present in the OSV data.

OSV ID Repository Package Feed Classes Roles Hosts
MAL-2026-5086 PyPI polymarket-data malware_infra malware_infra bold-river-456[.]onrender.com, ideal-octo-spoon[.]onrender.com, quiet-sky-123[.]onrender.com
MAL-2026-5031 npm @capibar.chat/ui-kit c2, exfil_endpoint c2, exfil_endpoint oob[.]moika.tech
MAL-2026-4882 npm @cloudplatform-single-spa/administration c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4888 npm @cloudplatform-single-spa/arenadata-db c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4891 npm @cloudplatform-single-spa/base-static-page c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4893 npm @cloudplatform-single-spa/business-solutions c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4896 npm @cloudplatform-single-spa/cloud-dns c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4898 npm @cloudplatform-single-spa/cnapp-ui c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4901 npm @cloudplatform-single-spa/cp-api-gw c2_config config_or_webhook oob[.]moika.tech
MAL-2026-4902 npm @cloudplatform-single-spa/datagrid c2_config config_or_webhook oob[.]moika.tech

Ransomware Claims

15 ransomware claims posted across 7 groups, 6 countries, and 8 sectors in the past 24 hours.

Genesis dominated with 5 claims, followed by Coinbasecartel with 3, while the remaining 5 groups each posted 1-2 claims, showing moderate spread across 7 groups.

Group Claims
Genesis 5
Coinbasecartel 3
Nova 2
Termite 2
Cmdorganization 1
Gunra 1
Krybit 1

Countries hit: US (9), IN (1), FR (1), GB (1), VN (1), BR (1).

Targeted sectors: Business Services (3), Technology (3), Manufacturing (2), Healthcare (1), Energy (1), Financial Services (1), Education (1), Transportation/Logistics (1).

C2 Observations

828 C2 observations landed across 31 malware families, with 824 unique hosts and 3 shared hosts.

AsyncRAT accounted for 656 of 828 C2 observations, a 79% concentration, with 3 shared hosts hosting multiple families.

Family C2s
asyncrat 656
clearfake 88
vshell 16
mirai 12
iclickfix 6
cobaltstrike 5
quasar 5
remcos 4
valleyrat_s2 4
redtail 3
sectoprat 3
xworm 3

Shared Hosts

Three hosts each served multiple C2 families, indicating shared infrastructure reuse: one German host ran AsyncRAT, HijackLoader, and Remcos; an Indian host ran CustomerLoader and Quasar; a Hong Kong host ran DonutLoader and ValleyRAT.

Host Family Count Selected Families AS / Country
olayaligia1458[.]loseyourip.com 3 asyncrat, hijackloader, remcos 1337 Services GmbH / DE
103[.]165.11.137 2 customerloader, quasar SOFTERINT TECHNOLOGY (OPC) PRIVATE LIMITED / IN
143[.]92.34.163 2 donutloader, valleyrat_s2 CTG Server Limited / HK

Quad9 DNS Activity

Quad9 blocked 2 C2 hosts in the last 24 hours, with AsyncRAT and Clearfake domains drawing queries from multiple countries including Switzerland, Vietnam, and Germany.

Top 10 New Quad9 C2 Blocks (24hour)

Host Families Blocked Events Top Countries
z[.]phimtoico.blog asyncrat 55 CH, VN, KE, US, PH
e0vt7hv0[.]saostar.biz clearfake 13 DE, CH, JP, US

Top 10 All C2 DB Quad9 C2 Blocks (24hour)

Host Blocked Events Top Countries
1[.]hikvision-cctv.su 394,613 PK, OM, BR, US, FR
ff[.]xxcc789.com 202,170 DE
ff[.]nnmm234.com 202,110 DE
ff[.]aass654.com 202,092 DE
ff[.]jjkk567.com 202,086 DE
ff[.]vvbb321.com 202,082 DE
filev2[.]getsession.org 198,181 DE, NL, SG, GB, AE
topbannersun[.]com 119,971 ID, ET, MU, BD, CH
hh[.]jjkk567.com 116,639 LK, US
hh[.]nnmm234.com 116,634 LK, US

Infrastructure

Download-host infrastructure covered 851 hosts across 25 countries, 84 providers, and 4 infrastructure types.

C2 hosting concentrated in the US (392 hosts) and France (136), with Cloudflare (346) and OVH (135) as top providers. Hosting infrastructure accounted for 819 of 851 C2 hosts.

Provider Download Hosts
Cloudflare 346
OVH SAS 135
DataWeb Global Group B.V. 51
velia.net Internetdienste GmbH 41
Akamai Connected Cloud 37
Scalaxy B.V. 31
Datacamp 27
Team Internet AG 21
Viettel Group 19
Trellian Pty. 14

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