General
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Target
tmp
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Size
80KB
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Sample
230329-zpekzsbe51
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MD5
6ea65106bdd4ab1148028f83956336d1
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SHA1
a1e0b3255718cd3478e6a585305427a8f2f3133d
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SHA256
c599bebc9ae54a54710008042361293d71475e5fbe8f0cbaceb6ee4565a72015
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SHA512
f0968062f384b2760d1f6f0189a70d6adefe2ca5162c6acffb64c351d7dbd0da0db00e56fa4c7ca9cb94f9b6b98ef732593412b6e1e23799aa06b7e394b2c95a
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SSDEEP
1536:YnJZzZ0+yQaiu6BkuUIbppIHI+CwthPLO3QeDfI:+Dt0+Faiu6BkuUIbppIHI+Cwt5LOgSfI
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230221-en
Malware Config
Extracted
purecrypter
http://80.66.75.37/a-Xmifagl.dll
Extracted
C:\Users\Admin\Desktop\FILE RECOVERY.txt
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Extracted
C:\Program Files\7-Zip\Lang\FILE RECOVERY.txt
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion/mallox/privateSignin
http://wtyafjyhwqrgo4a45wdvvwhen3cx4euie73qvlhkhvlrexljoyuklaad.onion
Targets
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Target
tmp
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Size
80KB
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MD5
6ea65106bdd4ab1148028f83956336d1
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SHA1
a1e0b3255718cd3478e6a585305427a8f2f3133d
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SHA256
c599bebc9ae54a54710008042361293d71475e5fbe8f0cbaceb6ee4565a72015
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SHA512
f0968062f384b2760d1f6f0189a70d6adefe2ca5162c6acffb64c351d7dbd0da0db00e56fa4c7ca9cb94f9b6b98ef732593412b6e1e23799aa06b7e394b2c95a
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SSDEEP
1536:YnJZzZ0+yQaiu6BkuUIbppIHI+CwthPLO3QeDfI:+Dt0+Faiu6BkuUIbppIHI+Cwt5LOgSfI
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PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Clears Windows event logs
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Stops running service(s)
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Modifies file permissions
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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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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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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v6
Defense Evasion
File Deletion
2File and Directory Permissions Modification
1Impair Defenses
1Indicator Removal on Host
1Modify Registry
1