General
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Target
.
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Size
13KB
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Sample
230411-r3x1gsda75
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MD5
d8b7f7230827c80019768db823f7f3b7
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SHA1
eed8e0ed77610ff2c4513e93cc66ed5e6016ce5b
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SHA256
fdaf5db4f6ea7dce12bbd41267a11432980cb29522e3311c34d34894437a9a15
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SHA512
9465b1ce0973bddc0bc92972ed310960e41b5407d9bf6fa58b6cbfd18b75511d967d017b1c1d0d92b0f2e7a364275a3e7408b7a5f84ab5b8918897733fe9cba7
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SSDEEP
384:rJCQRcIGLiVoOsKUElKeGMiU8HhhbPok28rtGZ:rcwBVoOsKvI1MoBhbQqru
Static task
static1
Behavioral task
behavioral1
Sample
.js
Resource
win10-20230220-en
Behavioral task
behavioral2
Sample
.js
Resource
win7-20230220-en
Behavioral task
behavioral3
Sample
.js
Resource
win10v2004-20230220-en
Malware Config
Targets
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Target
.
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Size
13KB
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MD5
d8b7f7230827c80019768db823f7f3b7
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SHA1
eed8e0ed77610ff2c4513e93cc66ed5e6016ce5b
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SHA256
fdaf5db4f6ea7dce12bbd41267a11432980cb29522e3311c34d34894437a9a15
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SHA512
9465b1ce0973bddc0bc92972ed310960e41b5407d9bf6fa58b6cbfd18b75511d967d017b1c1d0d92b0f2e7a364275a3e7408b7a5f84ab5b8918897733fe9cba7
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SSDEEP
384:rJCQRcIGLiVoOsKUElKeGMiU8HhhbPok28rtGZ:rcwBVoOsKvI1MoBhbQqru
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Modifies WinLogon for persistence
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Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Downloads MZ/PE file
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Adds Run key to start application
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Drops desktop.ini file(s)
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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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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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MITRE ATT&CK Matrix ATT&CK v6
Persistence
Winlogon Helper DLL
1Change Default File Association
1Registry Run Keys / Startup Folder
1Bootkit
1Hidden Files and Directories
1Defense Evasion
Modify Registry
6Bypass User Account Control
1Disabling Security Tools
1Hidden Files and Directories
1