General
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Target
Downloader.hta
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Size
1KB
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Sample
240415-sxtljsca7v
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MD5
3c8fcca68536d9cc5e55b526e139fd75
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SHA1
0d28aff554f760e6b99534a30deca54640410b13
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SHA256
254cfad84234f93e2b1fa7f1d113ccc60f21ebc5f1cff991afd10e45339a9a4c
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SHA512
b61788c97c1c8af30264a310b3d57025e760b3661fd2132bb5603f817852b6387f5a017aa4b51dd2c31ce4fbe99e1afd20a75ccabfdf02db11a121e4aba3271c
Static task
static1
Behavioral task
behavioral1
Sample
Downloader.hta
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
Downloader.hta
Resource
win11-20240412-en
Malware Config
Extracted
orcus
s7vety-47274.portmap.host:47274
dd6ac135bc344ba3be035bc19a9835dc
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autostart_method
Registry
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enable_keylogger
false
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install_path
%temp%\Windows Updater\updateclient.exe
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reconnect_delay
10000
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registry_keyname
Orcus
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taskscheduler_taskname
Orcus
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watchdog_path
AppData\OrcusWatchdog.exe
Targets
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Target
Downloader.hta
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Size
1KB
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MD5
3c8fcca68536d9cc5e55b526e139fd75
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SHA1
0d28aff554f760e6b99534a30deca54640410b13
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SHA256
254cfad84234f93e2b1fa7f1d113ccc60f21ebc5f1cff991afd10e45339a9a4c
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SHA512
b61788c97c1c8af30264a310b3d57025e760b3661fd2132bb5603f817852b6387f5a017aa4b51dd2c31ce4fbe99e1afd20a75ccabfdf02db11a121e4aba3271c
Score10/10-
Orcus main payload
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Orcurs Rat Executable
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Downloads MZ/PE file
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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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Adds Run key to start application
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
BITS Jobs
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1