Kimsuky APT Targets South Korea with Deceptive PDF Lures

2025-04-04 Seqrite

https://www.seqrite.com/blog/kimsuky-apt-south-korea-pdf-lures/

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Seqrite Labs links two South Korea-focused campaigns to Kimsuky, also known as Black Banshee, using government-themed PDF/LNK lures sent by email to government entities, local offices, and residential recipients. The infection chain begins with a malicious LNK that retrieves an obfuscated VBScript from external C2 infrastructure, drops a PDF and ZIP archive, and runs VBScript and PowerShell components hidden in files such as 1.vbs, 1.ps1, 1.log, and 2.log. The PowerShell stage collects the BIOS serial number, checks for virtualized environments, creates host-specific temporary storage, and supports data exfiltration, browser credential theft, cryptocurrency wallet file collection, persistence, and C2 communication. A decoded second log contains keylogging and clipboard-monitoring functionality, showing the campaign’s emphasis on credential and sensitive data theft from compromised South Korean systems.

Indicators of Compromise

Type Value First Seen Last Seen
HASH 3c2ea04090ad8c28116c42a9a2be5b2… 2025-04-04 2025-06-17
HASH 28f2fcece68822c38e72310c911ef00… 2025-04-04 2025-06-17
DOMAIN srvdown.ddns.net 2025-04-04 2025-06-17
HASH a66c25b1f0dea6e06a4c9f8c5f6ebba… 2025-03-28 2025-06-17
HASH f73164bd4d2a475f79fb7d0806cfc3d… 2025-03-25 2025-06-17
DOMAIN cdn.glitch.global 2025-03-28 2025-05-27
HASH 12a00489c8c646e2f558778491751de… 2025-04-04 2025-04-04
URL http://srvdown.ddns.net 2025-04-04 2025-04-04
URL https://cdn.glitch.global/ 2025-04-04 2025-04-04
HASH b1f9b450b97320de54f2450ace151b4… 2025-03-25 2025-04-04

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2024-09-12 • 56% Match
#Kimsuky #T1102.002 #T1082 #T1059.003 #T1567.002 #T1140 #T1005 #T1070.004 #T1587.001 #T1041 #T1608.001 #T1071.001 #T1112 #T1083 #T1056.001 #T1059.006 #T1204.001 #T1059.007 #T1036 #T1027 #T1204.002 #T1566.002 #T1555.003 #T1057 #T1059.005 #T1583.006 #T1518.001 #T1566.001 #T1547.001 #T1585.002 #T1053.005 #T1598.003 #T1583.001 #T1059.001 #T1036.005 #T1552.001 #T1585.001 #T1105 #T1219 #T1055 #T1553.002 #T1562.001 #T1027.002 #T1133 #T1190 #T1098 #T1016 #T1074.001 #T1588.002 #T1055.012 #T1587 #T1078.003 #T1071.002 #T1562.004 #T1550.002 #T1111 #T1071.003 #T1591 #T1003.001 #T1218.011 #T1593.002 #T1586.002 #T1588.005 #T1583.004 #T1036.004 #T1589.003 #T1594 #T1218.010 #T1557 #T1593.001 #T1218.005 #T1589.002 #T1584.001 #T1070.006 #T1021.001 #T1560.001 #T1176 #T1136.001 #T1543.003 #T1012 #T1534 #T1560.003 #T1007 #T1564.003 #T1114.003 #T1114.002 #T1564.002 #T1040 #T1546.001 #T1505.003
Shares tags: Kimsuky, T1082, T1140
2026-04-17 • 53% Match
#Kimsuky #Phishing #T1102.002 #T1082 #T1140 #T1041 #T1113 #T1608.001 #T1071.001 #T1115 #T1083 #T1497 #T1056.001 #T1204.001 #T1027 #T1204.002 #T1566.002 #T1566.003 #T1567 #T1057 #T1059.005 #T1583.006 #T1583.003 #T1204.004 #T1518.001 #T1568.001 #T1566.001 #T1547.001 #T1585.002 #T1056.003 #T1053.005 #T1539 #T1608.005 #T1598.003 #T1590.005 #T1583.001 #T1059.001 #T1036.005
Shares tags: Kimsuky, T1082, T1140
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