#MassLogger_180820

#IOC #OptiData #VR #MassLogger #NET #Stealer #RAR #EXE #PowerShell

https://pastebin.com/4uXgesYV

MassLogger identified with help of @James_inthe_box
Binaries was correctly decoded by @ni_fi_70

FAQ:
https://medium.com/@mariohenkel/decrypt-masslogger-2-4-0-0-configuration-eff3ee0720a7
https://github.com/advanced-threat-research/Yara-Rules/blob/master/malware/MALW_masslogger_stealer.yar
https://www.fireeye.com/blog/threat-research/2020/08/bypassing-masslogger-anti-analysis-man-in-the-middle-approach.html
https://www.seqrite.com/blog/masslogger-an-emerging-spyware-and-keylogger/
https://fr3d.hk/blog/masslogger-frankenstein-s-creation

attack_vector
--------------
email attach .dat (RAR) > EXE > PowerSHelll > GET .jpg > decode > inject > steal

email_headers
--------------
Return-Path: <[email protected]>
Received: from diez.sitserver.es (localhost.localdomain [127.0.0.1])
	by diez.sitserver.es (Postfix) with ESMTPSA id E09911203E87;
Received: from r-199-61-62-5.ff.avast.com (r-199-61-62-5.ff.avast.com
 [5.62.61.199]) by webmail.publiactiva.com (Horde Framework)
Date: Tue, 18 Aug 2020 05:53:43 +0000
From: [email protected]
Subject: Fwd: Супровідний платіж 18-18-2020 08:49:43
User-Agent: Horde Application Framework 5
X-FE-ORIG-ENV-FROM: [email protected]
X-FEAS-CLIENT-IP: 95.216.245.200

files
--------------
SHA-256		21bb50ff9f59c9381ba79763f53ee12563502fd647ae20f54868074640a4911d
File name	Untitled attachment 00182.dat	[ RAR archive data, vc1, Locked, os: OS/2 ]
File size	24.01 KB (24586 bytes)

SHA-256		2f49691118a908eb48c777e70065854e619b438bc317199b3559a1d8d5cddc6d
File name	Доказ оплати...exe [PE32 executable for MS Windows (GUI) Intel 80386 32-bit Mono/.Net assembly]
File size	53.50 KB (54784 bytes)

SHA-256		c06d5538f6d2e875d49601a403d1cbd3ac636004b4ee106f69a1aa2fa13aeabf
File name	Q9.jpg	[ASCII text, with very long lines, with no line terminators]
File size	5.38 MB (5640802 bytes)

SHA-256		9fa11ac7c21c590f61767f2cbf7f3e17235cd43bd0587875817d02a624e3c6a4
File name	InstallUtil.exe.inactive [ .NET executable ]
File size	709.50 KB (726528 bytes)

SHA-256		82bd8e28f81160039e462330daee5190d7f474e76723aea057ddeadb201bc55c
File name	beef.dll  [.NET executable]
File size	25.00 KB (25600 bytes)

activity
**************
PL_SCR		privatnidoktoricacak.com/Q9.jpg

C2		94.127.7.174
		exfil on smtp.gmail.com

netwrk
--------------
[ssl]
smtp.gmail.com

[http]
217.26.215.27	privatnidoktoricacak.com	GET /Q9.jpg HTTP/1.1

comp
--------------
powershell.exe	3392	TCP	217.26.215.27	80	ESTABLISHED

proc
--------------
C:\Users\operator\Desktop\1.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass $NjBXI='...';$jm=$NjBXI.Split('^') | forEach {[char]([convert]::toint16($_,16))};$jm -join ''|I`E`X

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe

persist
--------------
n/a

drop
--------------
n/a	(all done by powershell)

# # #
https://www.virustotal.com/gui/file/21bb50ff9f59c9381ba79763f53ee12563502fd647ae20f54868074640a4911d/details
https://www.virustotal.com/gui/file/2f49691118a908eb48c777e70065854e619b438bc317199b3559a1d8d5cddc6d/details
https://www.virustotal.com/gui/file/c06d5538f6d2e875d49601a403d1cbd3ac636004b4ee106f69a1aa2fa13aeabf/details
https://www.virustotal.com/gui/file/9fa11ac7c21c590f61767f2cbf7f3e17235cd43bd0587875817d02a624e3c6a4/details


VR