General
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Target
Loader.bat
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Size
7.3MB
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Sample
250104-r1rqpatma1
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MD5
1bec1098946595a03fa067a3ef7ce292
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SHA1
89cfb4a2f8800f1b944d906d959639907672317d
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SHA256
a8f184a333fb89f41ddca323472463b4ee2cbed63d26d105823300148e2015cb
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SHA512
dc7e73ed353d50b73a0eb6f1d955812a29fc5e05df300487d1eda49cc78e6748929a17cd59b58148f7e8696fd0fdfd21e8269af6788f1037bda6d8ddf30c6082
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SSDEEP
49152:262lW3ZtqF71E0f+DP24xmB1F+RfHhZzvTUPbFJMg0FQ5/Ai4cr5YSW7iFsihJv1:k
Static task
static1
Behavioral task
behavioral1
Sample
Loader.bat
Resource
win11-20241007-en
Malware Config
Extracted
quasar
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encryption_key
6F38862AF940DB0B877E1A5C024641D617D7FAB6
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reconnect_delay
3000
Targets
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Target
Loader.bat
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Size
7.3MB
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MD5
1bec1098946595a03fa067a3ef7ce292
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SHA1
89cfb4a2f8800f1b944d906d959639907672317d
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SHA256
a8f184a333fb89f41ddca323472463b4ee2cbed63d26d105823300148e2015cb
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SHA512
dc7e73ed353d50b73a0eb6f1d955812a29fc5e05df300487d1eda49cc78e6748929a17cd59b58148f7e8696fd0fdfd21e8269af6788f1037bda6d8ddf30c6082
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SSDEEP
49152:262lW3ZtqF71E0f+DP24xmB1F+RfHhZzvTUPbFJMg0FQ5/Ai4cr5YSW7iFsihJv1:k
Score10/10-
Quasar family
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Quasar payload
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Suspicious use of NtCreateProcessExOtherParentProcess
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Blocklisted process makes network request
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Deletes itself
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Executes dropped EXE
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Indicator Removal: Clear Windows Event Logs
Clear Windows Event Logs to hide the activity of an intrusion.
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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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