Lazarus group leverages Covid themed HWP Document

2020-05-09 dinu135dk

https://medium.com/@dinu135dk/lazarus-group-leverages-covid-themed-hwp-document-dde6b80d51eb

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The excerpt describes a Lazarus campaign using a COVID-themed HWP document targeting South Korea, including a Jeollanam-do coronavirus inquiry lure. OSINT analysis found the executable was downloaded from sofa.rs and matched detection logic for a reflective loader. The executable is described with a victim-selection kill switch, sandbox and debugger evasion, execution-timing checks, and IsDebuggerPresent use. Mapped behaviors include WMI and API execution, application shimming, masquerading, packing, input capture, discovery activity, remote file copy, clipboard collection, encrypted exfiltration, and standard cryptographic protocol command and control. The report provides MD5 indicators and YARA-style reflective-loader strings that defenders can use for triage and detection.

Indicators of Compromise

Type Value First Seen Last Seen
DOMAIN mbrainingevents.com 2020-04-02 2020-05-29
YARA ReflectiveLoader 2020-05-09 2020-05-09
HASH 186aa05bfe4739274c3c258be4a5a160 2020-05-09 2020-05-09
IPv4 185.62.56.131 2020-05-09 2020-05-09
HASH fe2d05365f059d48fd972c79afeee682 2020-04-15 2020-05-09
HASH 8451be72b75a38516e7ba7972729909e 2020-04-02 2020-05-09

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Shares tags: Lazarus, T1082, T1140
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