Severity
High
Analysis Summary
BlackMoon, also known as KrBanker, is a banking Trojan that first emerged in September 2015, initially targeting South Korean banks using a pharming technique to redirect users to fake banking websites and steal credentials. Over the years, it has undergone significant evolution, shifting from simple credential theft to more complex, multi-stage attacks. By late 2022, BlackMoon began targeting businesses in the USA and Canada, focusing on long-term persistence, evasion, and the delivery of additional malware rather than just credential harvesting.
As of 2025, recent campaigns have demonstrated the Trojan's use of modular architecture, allowing it to download spyware, adware, and tools for lateral movement within corporate networks. It employs advanced evasion techniques such as signed and obfuscated binaries, encrypted command-and-control (C2) channels, and the abuse of legitimate system tools like PowerShell, making it difficult to detect. Additionally, it leverages vulnerabilities in outdated VPN software and remote access tools to gain initial access. BlackMoon has effectively transitioned into a stealthy platform for malware delivery and system compromise, posing a persistent threat to business environments in North America.
Impact
- Data Exfiltration
- Credential Theft
- Financial Loss
Indicators of Compromise
MD5
83bcb96ff2f57557f8ec3a0148b756d3
9f6e20242b0c7a027f6131c625330e28
b868ae5b046c4c68cda8468b4a473eff
94673a28643d9b26b35d1c9cdcd4af9d
SHA-256
44a0a46f9872e66b40c2d7ad0b5934f208b6da9dd5fc884bb71df62d110b25a2
26e8ad89639c328bbab5ab919135cdea65c4e95beb4513ee248e117fa992e4aa
b980fda0ba2e22025abef69732b0f7ca5f5535ee68434d8198f6fcefe02d87a0
94d5d37af433325b9a5c5ae02a203cce86db33156f19ab332b1fe3396ee107c0
SHA1
513e6b073da80e0e57170308b7972dec4230e999
e8d7216c0becb4a62ce258ffab3aa8933de61d0b
7999d1256f211e61e5d936cbeebb9cc02b486793
a56e041f230829e090531b0dd5c4bea92db40c88
Remediation
- Block all threat indicators at your respective controls.
- Search for indicators of compromise (IOCs) in your environment utilizing your respective security controls.
- Never trust or open links and attachments received from unknown sources/senders.
- Maintain cyber hygiene by updating your anti-virus software and implementing a patch management lifecycle.
- Patch and upgrade any platforms and software timely and make it into a standard security policy. Prioritize patching known exploited vulnerabilities and zero-days.
- Enable antivirus and anti-malware software and update signature definitions promptly. Using multi-layered protection is necessary to secure vulnerable assets.