General
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Target
0x001a00000002ab29-1094.bat
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Size
7.3MB
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Sample
250104-b8y7qsvkez
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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
0x001a00000002ab29-1094.bat
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
0x001a00000002ab29-1094.bat
Resource
win10v2004-20241007-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
0x001a00000002ab29-1094.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
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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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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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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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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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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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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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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Indicator Removal
1Clear Windows Event Logs
1Modify Registry
1Pre-OS Boot
1Bootkit
1