General
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Target
qwe.exe
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Size
918KB
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Sample
240414-t1dvyach2t
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MD5
b70c58bfc13fa70d4e2e996105829ebc
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SHA1
78fa32d0ae2cdfd48096b75a843b14cf289a519f
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SHA256
f32b0ef6f9db9cb8e271eb9e60c356ecbd8bbfe98de9f864c700cb8076eeb92b
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SHA512
d18ed7f5306dffd8408b875e1e478ec21deaa45282b49430e984f7008a4dcf20d8983d935bf3307fd394d3407d91bd7b31d6be26264d2825e843689ffb188c0b
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SSDEEP
12288:90XCGPSX0zbyD+ndg+QCImGYUl9qyzlkE2kUNCg+34ai5V2Xopqi1n07dG1lFlWD:l2C4MROxnF9lrrcI0AilFEvxHj+Qu
Behavioral task
behavioral1
Sample
qwe.exe
Resource
win7-20240220-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
qwe.exe
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Size
918KB
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MD5
b70c58bfc13fa70d4e2e996105829ebc
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SHA1
78fa32d0ae2cdfd48096b75a843b14cf289a519f
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SHA256
f32b0ef6f9db9cb8e271eb9e60c356ecbd8bbfe98de9f864c700cb8076eeb92b
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SHA512
d18ed7f5306dffd8408b875e1e478ec21deaa45282b49430e984f7008a4dcf20d8983d935bf3307fd394d3407d91bd7b31d6be26264d2825e843689ffb188c0b
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SSDEEP
12288:90XCGPSX0zbyD+ndg+QCImGYUl9qyzlkE2kUNCg+34ai5V2Xopqi1n07dG1lFlWD:l2C4MROxnF9lrrcI0AilFEvxHj+Qu
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Orcus main payload
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Orcurs Rat Executable
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Disables Task Manager via registry modification
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Drops file in Drivers directory
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Modifies Windows Firewall
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Sets DLL path for service in the registry
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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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Registers COM server for autorun
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2
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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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Modifies WinLogon
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
3