General
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Target
v2c.exe
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Size
95KB
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Sample
211028-lfcs5sbhh8
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MD5
757139e76fae876ae50dd2c3ac11d5d8
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SHA1
1c150493014d29c1f8a51e397e527f7d7c1476c7
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SHA256
9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58
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SHA512
852febe5dc991fa6dc5ff994b2de18548e98a2f53de903a480ed871d9d25413159b167a3c0ff39175bbf7c339604bb1eccc2f9425415ab16089bc56e3e998974
Static task
static1
Behavioral task
behavioral1
Sample
v2c.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
v2c.exe
Resource
win10-en-20211014
Malware Config
Extracted
blackmatter
3.0
4e591a315c54e8800dae714320555fa5
Protocol: smtp- Port:
587 - Username:
[email protected] - Password:
yhU6VJ$&
Protocol: smtp- Port:
587 - Username:
[email protected] - Password:
RPo@ndf9
Protocol: smtp- Port:
587 - Username:
[email protected] - Password:
DH5U87@rA0ELa2
https://fluentzip.org
http://fluentzip.org
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attempt_auth
true
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create_mutex
true
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encrypt_network_shares
true
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exfiltrate
true
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mount_volumes
true
Extracted
C:\chkvc3MvG.README.txt
blackmatter
http://supp24maprinktc7uizgfyqhisx7lkszb6ogh6lwdzpac23w3mh4tvyd.onion/U6H6RKDF6W3B8XOWL
Targets
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Target
v2c.exe
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Size
95KB
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MD5
757139e76fae876ae50dd2c3ac11d5d8
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SHA1
1c150493014d29c1f8a51e397e527f7d7c1476c7
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SHA256
9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58
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SHA512
852febe5dc991fa6dc5ff994b2de18548e98a2f53de903a480ed871d9d25413159b167a3c0ff39175bbf7c339604bb1eccc2f9425415ab16089bc56e3e998974
Score10/10-
BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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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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Sets desktop wallpaper using registry
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Suspicious use of NtSetInformationThreadHideFromDebugger
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