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Rewterz Threat Alert – Rancor Group New Custom Malware to Attack Southeast Asia

Severity

High

Analysis Summary

Rancor is a Chinese cyber espionage group targeting organizations in Southeast Asia. In their most recent investigation involving Rancor, Palo Alto found an undocumented, custom malware family in use alongside the group’s existing toolset.  The attacks used various first stage malware, including the new family, in an attempt to install either Derusbi or KHRat malware as a second-stage payload.

word-image-144.png

Impact

System access

Indicators of Compromise

Domain Name

  • cswksfwq[.]kfesv[.]xyz
  • connect[.]bafunpda[.]xyz

IP

199[.]247[.]6[.]253

SHA-256

  • 0eb1d6541688b5c87f620e76219ec5db8a6f05732e028a9ec36195d7b4f5e707
  • aaebf987b8d80d71313c3c0f2c16d60874ffecbdda3bb6b44d6cba6d38031609
  • 0d61d9baab9927bb484f3e60384fdb6a3709ca74bc6175ab16b220a68f2b349e
  • db982b256843d8b6429af24f766636bb0bf781b471922902d8dcf08d0c58511e
  • cc081ffea6f4769733af9d0bae0308ca0ae63667fa225e7965df0884e96e2d2a
  • bc1c3e754be9f2175b718aba62174a550cdc3d98ab9c36671a58073140381659
  • 83d1d181a6d583bca2f03c3c4e517757a766da5f4c1299fbbe514b3e2abd9e0d

Remediation

  • Block all threat indicators at your respective controls.
  • Always be suspicious about emails sent by unknown senders.
  • Never click on the links/attachments sent by unknown senders.