Rewterz Threat Alert : ‘Love You’ MalSpam campaign dropping Grandcrab Ransomware, Phorpiex Spambot and Cryptocurrency miner

SEVERITY: High

ANALYSIS SUMMARY

A massive Malspam campaign using zipped JavaScript (.js) files as malicious email attachments is discovered. The
attachments begin with ‘Love_You_’ indicating the subject matter to be love letters.

Behind this LoveYou campaign are hidden malicious hate-worthy entities. The infection traffic includes GandCrab
ransomware, a Monero (XMRig) cryptocurrency miner, and Phorpiex spambot traffic.

Several HTTP requests for additional malware were spotted in the infection traffic, creating multiple copies of same malware on the infected host, which generated Monero (XMRig) cryptocurrency mining traffic as well as the expected post-infection traffic patterns for GandCrab ransomware. The infected host also turned into a spambot for the Phorpiex botnet.

GrandCrab dominated the infected host and its file downloader also established itself on a USB thumb drive plugged into the infected host.

IMPACT

• Malware Infection
• System Compromise
• Ransomware infection
• Loss of information

INDICATORS OF COMPROMISE

IP(s) / Hostname(s)

• 92[.]63[.]197[.]48
• 198[.]105[.]244[.]228
• 78[.]46[.]77[.]98
• 217[.]26[.]53[.]161
• 74[.]220[.]215[.]73
• 136[.]243[.]13[.]215
• 138[.]201[.]162[.]99

Ports

• 80
• 443
• 9090
• 25
• 53

URLs

• icanhazip[.]com
• slpsrgpsrhojifdij[.]ru
• osheoufhusheoghuesd[.]ru
• suieiusiueiuiuushgf[.]ru
• www[.]2mmotorsport[.]biz
• www[.]haargenau[.]biz
• www[.]bizziniinfissi[.]com
• www[.]holzbock[.]biz
• www[.]fliptray[.]biz
• gandcrabmfe6mnef[.]onion

Extension

• .exe
• .txt
• .zip
• .js

Email Address

• Teddy31@8038[.]com
• Imogene99@0354[.]com
• Imelda31@1529[.]com
• Ted93@4302[.]com
• Deanne11@5387[.]com
• Bob01@0437[.]com
• Teddy21@8381[.]com
• Bradford99@2804[.]com
• Taylor74@4656[.]com
• Deena49@1659[.]com

Email Subject

• Always thinking about you
• Felt in love with you!
• I love you
• Just for you!
• My letter just for you
• My love letter for you
• Wrote this letter for you
• 😀

Malware Hash (MD5/SHA1/SH256)

• 72429571f4ca62fceb5a4fc0a17a8f8ab88c1ed01b9d657f7e9778c7939cea06
• 27ac0e9011294c2152d224052280f7fa434df572809a6f96f9a306f3d5c965e3
• 99a1e83e77850b59995cdf29b61e9f29f9c38882363027668030df0a62059645
• 06e61032bccfe0ccd51ddbab480e1eb6392bccb318639ecac0092e96b9d794ad
• 7818e108a16f096eb71feb564ce92095c4ac1e613933630169cc16606bb5f68d
• 0a27af16b991cbe0f5445022cb1d752a9144abeede6b8de0055247e6fd6c1698
• 32ee086fbc82ddd0675c0293656f813493ce6d96d02e0bcbeccee4d1a6adfb20
• 12e3038b2ed0663cba3c6a05ac0a27b61dce694dffc27aafb4cb3f2f229ff6b8
• 6ad3e68e2e8c5088bc8544bc230a2e333645d3c246ace772bf61f80cd0e93002
• 99fe714a365f8e4a74687592700b27f2016a59c7527b5d4ef7cfd97e63468349
• d189f44528dfa3f8dba2632ae26f564a37931cb89668d31402fc7fb05ae63c1a
• c3683096f91b00dfe248e388b4302d5471fb090ab8092c96c991a467c26f26b0
• f3c369edc2ea96465c49a14f64bdce83c0a401e0ae12e809bced8f99b977c5dc
• f4d3ba58e91dc95877ba13804df6fe307ef6efcef74d3a00792387625a624cf4
• 9ff78056e225c08ef1f1ff71f305201387f3ec766c8727361851287a74de1f45
• ba23af4480611fb19fad2cd83a41bd347d183e0ef8e1c5477916bebe32955d87
• cf9a20874089ec7aa1a84a27f74928c71266a684e7fee4c1ac8d37aaf57d6bf2
• 0de30f9dbe37aea5932e5df85b4f1aa5cefe28f3bffb58d4d8ae40ccd040a4a7
• 056b7eb0c06645e1f51ed77f4fa18a4bed47135108371a84f0482f141ae0d769
• 035ae8f389e0a4cb58428d892123bc3e3b646e4387c641e664c5552228087285
• b8bf5b607b305139db81c48e96010a67768488b01edc8c615306ed303c545b0d
• 4b9d5841d38b8658466dcaf409c34c0f6d2d1f9ecb64254391a4621465daf79b
• 4c0103c745fa6e173821035c304863d751bea9c073d19070d9ebf8685da95040

REMEDIATION

Consider blocking the threat indicators at their respective controls and strictly avoid opening spam emails coming from unknown sources.

If you think you’re a victim of a cyber-attack, immediately send an email to soc@rewterz.com.