Hwp malicious code disguised as Korea's Financial Supervisory Service
2018-08-07 • kino •
A malicious HWP document disguised as a Korea Financial Supervisory Service notice used encrypted shellcode similar to a previously observed HWP sample. The excerpt notes 16-byte XOR keys, extraction of PostScript code and shellcode, and a malware-structure signature value of 0xAABBCCDD followed by a download URL. The domain tpddata.com is described as recurring across recently released HWP samples, and the body lists related HWP filenames, hashes, and compromised-looking PHP paths. The evidence is useful for defenders tracking Korean-language HWP lure documents and validating the listed hashes, domains, and URLs in endpoint and network telemetry.
Indicators of Compromise
| Type | Value | First Seen | Last Seen |
|---|---|---|---|
| HASH | c2f150dbe9a8efb72dc46416ca29acd… | 2018-06-22 | 2020-06-23 |
| HASH | 3ff4ebae6c255d4ae6b747a77f2821f… | 2018-06-22 | 2020-05-12 |
| HASH | 4a17324aa55f5353ecd38f34e06e246… | 2018-06-22 | 2019-07-03 |
| HASH | e498630abe9a91485ba42698a35c2a0… | 2018-06-22 | 2019-07-03 |
| DOMAIN | tpddata.com | 2018-06-22 | 2018-09-24 |
| HASH | c9582680978fde80593f2bc164f9ac6f | 2018-08-07 | 2018-08-07 |
| HASH | 566f7b3f6af8d0b00593f3a83cd8af16 | 2018-08-07 | 2018-08-07 |
| HASH | 9c3221dfc49b159f032eda70e8cb207… | 2018-06-22 | 2018-08-07 |
| HASH | a9d579819370e860ece7890c3490cde… | 2018-06-22 | 2018-08-07 |
| HASH | 485f77e5d32de5dc05510743025a75a… | 2018-06-22 | 2018-08-07 |
| HASH | 596fbdf01557c3ec89b345c57ae5d9a… | 2018-06-22 | 2018-08-07 |