2021-05-17 Unknown Malware IOCs

THREAT IDENTIFICATION:  UNKNOWN MALWARE

NOTES
Running the executable also drops a .dll and 3 additional (non-executable) files to disk.
Amazingly, the file hash for the .dll appears to have been on VirusTotal since 2009!
There was traffic out to an IP address but all I saw were TCP resets.

SUBJECTS OBSERVED
Re: Invoice

SENDERS OBSERVED
[email protected]

MALDOC FILE HASH
Invoice.iso
b7d01db02b4cc2a8eb206ba19f929d9d

UNKNOWN MALWARE FILE HASH
INV.exe
f8273c95045f27e5d6e134b3a549a804

Copied and renamed to:
weprasfwjvatm.exe
f8273c95045f27e5d6e134b3a549a804

EXTERNAL TRAFFIC
All I saw were TCP reset packets to/from 104.152.188.104

ADDITIONAL FILE HASHES
AppData\Local\Temp contains:

tambd6oqxct5led0
d3dde1244f9803c4e203358fdb6650e9

ynqcndeig
acbd3e7c6c99c4b193f2a1e604bc9976

3bxww6ac1hfs
96cbec9afc4628836a80fa456b63e5ef

Also, in a separate directory under AppData\Local\Temp\:
System.dll
c17103ae9072a06da581dec998343fc1

SUPPORTING EVIDENCE
https://www.virustotal.com/gui/file/dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f/detection