Magniber Ransomware’s Relaunch Technique

2023-02-23 Ahnlab

https://asec.ahnlab.com/en/48312/

Thumbnail for Magniber Ransomware’s Relaunch Technique

ASEC analyzed a Magniber relaunch mechanism in MSI-distributed samples aimed at Chrome and Edge users through typosquatting. The ransomware injects payloads into user processes and randomly chooses between immediate encryption and persistence setup. For persistence, it registers a dummy .3fr file under the Run key and links it to a command that downloads fresh Magniber on reboot, enabling reinfection after the first compromise. ASEC said distribution had stopped after February 20 but could resume later.

Indicators of Compromise

Type Value First Seen Last Seen
HASH 65ac438561b3a415876dff89d2804a13 2023-02-23 2023-02-23
HASH 162d6827d206fbab285c09b518f30ec9 2023-02-23 2023-02-23
HASH be1fbf7bf36efcf84a604da24b93d97f 2023-02-23 2023-02-23
HASH c32d55881a9290267ddbe7005b12b6b8 2023-02-23 2023-02-23
HASH fad8957047b31c13ac7ae4f72c4775d4 2023-02-23 2023-02-23
HASH 1484d68f70fca635fa36bdf6d0493fbf 2023-02-23 2023-02-23
HASH 35c3743df22ea0de26aeac37a88da1c9 2023-02-23 2023-02-23
HASH aa4c28fb3cd600745aa0abd616b2b128 2023-02-23 2023-02-23
HASH bd952ad584866bcd4454a3385b615c74 2023-02-23 2023-02-23
HASH 0723b125887e632bd2203680b75efb57 2023-02-23 2023-02-23

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