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General
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Target
SysLogsService.exe
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Size
7.7MB
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Sample
211205-jscmsscbeq
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MD5
0b97fa8b682939e55df2bcfe3d17dba5
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SHA1
9d0101a59a1f705d55ab5acb0577ea9a967a6bab
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SHA256
ef7fefcb41d79c824c429819fbe73e6d0186c0586bc5f031debf553cd43edce4
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SHA512
1d4e414a9abd9b4f317f4ea37fc2a76ee8d3057b5079f654c142ef0b938433d0c52f8620526375eed4b9ac0adceda26484ebad9e63b7c4df5aef272d07620e68
Static task
static1
Behavioral task
behavioral1
Sample
SysLogsService.exe
Resource
win7-en-20211014
Malware Config
Extracted
C:\Users\Admin\Desktop\CRYPTiNFO.TXT
t1000rn@404.city
https://www.bestchange.net
http://kwk62hefhey3zh4ki332d7uluww5oilm4c6t5tnhb4g5hrf7a2szvlqd.onion/chat
Targets
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Target
SysLogsService.exe
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Size
7.7MB
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MD5
0b97fa8b682939e55df2bcfe3d17dba5
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SHA1
9d0101a59a1f705d55ab5acb0577ea9a967a6bab
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SHA256
ef7fefcb41d79c824c429819fbe73e6d0186c0586bc5f031debf553cd43edce4
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SHA512
1d4e414a9abd9b4f317f4ea37fc2a76ee8d3057b5079f654c142ef0b938433d0c52f8620526375eed4b9ac0adceda26484ebad9e63b7c4df5aef272d07620e68
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DMA Locker
Ransomware family with some advanced features, like encryption of unmapped network shares.
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suricata: ET MALWARE BigLock Ransomware CnC Activity (ext)
suricata: ET MALWARE BigLock Ransomware CnC Activity (ext)
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suricata: ET MALWARE BigLock Ransomware CnC Activity (gen)
suricata: ET MALWARE BigLock Ransomware CnC Activity (gen)
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suricata: ET MALWARE BigLock Ransomware CnC Activity (info)
suricata: ET MALWARE BigLock Ransomware CnC Activity (info)
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suricata: ET MALWARE BigLock Ransomware CnC Activity (name)
suricata: ET MALWARE BigLock Ransomware CnC Activity (name)
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Modifies boot configuration data using bcdedit
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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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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Suspicious use of NtSetInformationThreadHideFromDebugger
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