Threat Analysis: ROKRAT Malware

2018-02-27 • Carbonblack •

https://www.carbonblack.com/2018/02/27/threat-analysis-rokrat-malware/

Carbon Black examined ROKRAT, also known as DOGcall, a remote access trojan used by attackers originating from North Korea. The malware is commonly delivered by loaders or carrier files such as macro-enabled Office documents, injects shellcode into processes such as wscript.exe or cmd.exe, and then deletes the loader to reduce artifacts. Its payload profiles the victim system, performs anti-analysis checks, and provides RAT capabilities including additional tool deployment, data exfiltration, credential harvesting, and screenshot capture. Newer variants used cloud services such as pCloud, Dropbox, and Yandex for command and control, while earlier related variants used hard-coded URLs hosted largely by Korean telecoms and sometimes downloaded second-stage malware disguised as JPG files.

Indicators of Compromise

Type Value First Seen Last Seen
DOMAIN cloud-api.yandex.net 2018-02-27 2025-08-29
HASH 7ebc9a1fd93525fc42277efbccecf5a… 2017-02-23 2018-08-14
HASH 95192de1f3239d5c0a7075627cf9845… 2017-02-23 2018-08-14
YARA ROKRAT_payload 2018-02-27 2018-02-27
YARA ROKRAT_loader 2018-02-27 2018-02-27
HASH 4c6474903705cb450bb6434c29e8854… 2018-02-27 2018-02-27
HASH a9e25c8aabc041c81ef44ab4483432d… 2018-02-27 2018-02-27
HASH 2eaf2a4764a1e5f4ed5c4c03cb91d910 2018-02-27 2018-02-27
HASH 2ca7c2048f247b871e455a9ac8bcb97… 2018-02-27 2018-02-27
HASH d8b76044cedbd7db8cd7d35e35853552 2018-02-27 2018-02-27
HASH 199dba4e0d91649be88d319d6e35679c 2018-02-27 2018-02-27
HASH d699ec58eb259f634e8a0ca394771097 2018-02-27 2018-02-27
HASH da2c1226b37133a26f073e1b2e99725e 2018-02-27 2018-02-27
HASH 0c80569caa34549a9ed52c8e747656aa 2018-02-27 2018-02-27
HASH cd6c70f1550d4ec7ef8c2f9389052187 2018-02-27 2018-02-27
HASH 31f84f4086f6cc29fdec3beb3d4143c7 2018-02-27 2018-02-27
HASH e200517ab9482e787a59e60accc8552… 2018-02-27 2018-02-27
HASH 807f171588560279c492b1bf5b5f1392 2018-02-27 2018-02-27
HASH 462e65d46a453444d5fa86c0df10acb9 2018-02-27 2018-02-27
HASH 1bcefc2ccdee1aa41578507d638b33f… 2018-02-27 2018-02-27
HASH bbc2905f395f561cb2c59b0541c2758a 2018-02-27 2018-02-27
HASH e1546323dc746ed2f7a5c973dcecc79… 2018-02-02 2018-02-27
HASH 7d8008028488edd26e665a3d4f70576… 2017-02-23 2018-02-27
HASH 6c372f29615ce8ae2cdf257e9f26178… 2017-02-23 2018-02-27
HASH 19e4c45c0cd992564532b89a4dc1f35… 2017-02-23 2018-02-27

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