General
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Target
b6ca7f11696f8c92f087336db50badff.exe
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Size
270KB
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Sample
210824-hhgpcg5zt6
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MD5
b6ca7f11696f8c92f087336db50badff
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SHA1
4535360e33b766a08a3dfa2627473a61c40e01b6
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SHA256
144b62852807332093289be1ce09dfe1f0cced88cf19f54537befbfbea053627
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SHA512
31d60231b46dc1422ae7c7773b88f5664e34962fd8f384ff36720d1b8eebdceb84f23a5e86dc3fd1023e035bc51ab17a2452c30b908c77202b782a3d6b08aed8
Malware Config
Extracted
smokeloader
2020
http://readinglistforaugust1.xyz/
http://readinglistforaugust2.xyz/
http://readinglistforaugust3.xyz/
http://readinglistforaugust4.xyz/
http://readinglistforaugust5.xyz/
http://readinglistforaugust6.xyz/
http://readinglistforaugust7.xyz/
http://readinglistforaugust8.xyz/
http://readinglistforaugust9.xyz/
http://readinglistforaugust10.xyz/
http://readinglistforaugust1.site/
http://readinglistforaugust2.site/
http://readinglistforaugust3.site/
http://readinglistforaugust4.site/
http://readinglistforaugust5.site/
http://readinglistforaugust6.site/
http://readinglistforaugust7.site/
http://readinglistforaugust8.site/
http://readinglistforaugust9.site/
http://readinglistforaugust10.site/
Extracted
C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
buran
Extracted
C:\Program Files\7-Zip\Lang\sk.txt
ryuk
Extracted
raccoon
fe582536ec580228180f270f7cb80a867860e010
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url4cnc
https://telete.in/xylichanjk
Targets
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Target
b6ca7f11696f8c92f087336db50badff.exe
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Size
270KB
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MD5
b6ca7f11696f8c92f087336db50badff
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SHA1
4535360e33b766a08a3dfa2627473a61c40e01b6
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SHA256
144b62852807332093289be1ce09dfe1f0cced88cf19f54537befbfbea053627
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SHA512
31d60231b46dc1422ae7c7773b88f5664e34962fd8f384ff36720d1b8eebdceb84f23a5e86dc3fd1023e035bc51ab17a2452c30b908c77202b782a3d6b08aed8
Score10/10-
Buran
Ransomware-as-a-service based on the VegaLocker family first identified in 2019.
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Raccoon
Simple but powerful infostealer which was very active in 2019.
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine Payload
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
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Windows security bypass
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xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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XMRig Miner Payload
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Creates new service(s)
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Downloads MZ/PE file
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Executes dropped EXE
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Modifies Windows Firewall
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Deletes itself
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Loads dropped DLL
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Reads user/profile data of local email clients
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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Themida packer
Detects Themida, an advanced Windows software protection system.
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Accesses cryptocurrency files/wallets, possible credential harvesting
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Checks whether UAC is enabled
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v6
Persistence
New Service
1Modify Existing Service
1Registry Run Keys / Startup Folder
2Scheduled Task
1Defense Evasion
Disabling Security Tools
1Modify Registry
4File Deletion
2Virtualization/Sandbox Evasion
1Install Root Certificate
1