Rewterz Threat Alert – STOP Ransomware has a New Feature – Azorult

March 19, 2019

Severity

Medium

Analysis Summary

STOP Ransomware was observed distributing DJVU ransomware in January for its malicious components and now installs the Azorult trojan to harvest data. STOP ransomware will download malicious extensions to encrypt the files installed in a victim’s computer. The ransomware will upload the target systems encrypted files on the attackers C&C server.

Impact

STOP Ransomware
Loss of credentials

Indicators of Compromise

IP(s) / Hostname(s)	77.123.139[.]189 5.8.76[.]184 185.178.47[.]61 213.226.125[.]171
URLs	hxxp://ymad[.]ug/tesptc/ck/updatewin1.exe hxxp://ymad[.]ug/tesptc/ck/updatewin2.exe hxxp://ymad[.]ug/tesptc/ck/updatewin.exe hxxp://ymad[.]ug/tesptc/ck/3.exe hxxp://ymad[.]ug/tesptc/ck/4.exe hxxp://ymad[.]ug/tesptc/ck/5.exe hxxp://ymad[.]ug/1/index.php
Malware Hash (MD5/SHA1/SH256)	a2dac478bcee3aea90c06bfe26967553 28718842db30861e4a8afd02e2a9a1720ee651a7 1dabaae66931e6414803313adee4d7b5305acba3ad539f49b6aba65f10f809a6 5b4bd24d6240f467bfbc74803c9f15b0 c17f98c182d299845c54069872e8137645768a1a 14c7bec7369d4175c6d92554b033862b3847ff98a04dfebdf9f5bb30180ed13e 996ba35165bb62473d2a6743a5200d45 52169b0b5cce95c6905873b8d12a759c234bd2e0 5caffdc76a562e098c471feaede5693f9ead92d5c6c10fb3951dd1fa6c12d21d e3083483121cd288264f8c5624fb2cd1 144a1dd6714ff4b5675c32f428d1899e500140a5 114ccacb7ca57c01f3540611fdf49e68416544da8d8077f5896434a4b71b01dd 0e3a899fca9dae1a119a6ac894167b06 a7271e9a20f7da6287c0a967c195fcd4a190d179 5c258f35e2b9b6997464631e1178841d090a47f3b43d1f6f54621128d352d2f3 76d9c9d7a779005f6caeaa72dbdde445 34efc6312c7bff374563b1e429e2e29b5da119c2 b61991e6b19229de40323d7e15e1b710a9e7f5fafe5d0ebdfc08918e373967d3

Remediation

Block threat indicators at your respective controls
Do not click on any attachments/links sent by unknown senders
Always be suspicious about the emails being sent from unknown senders