General
- Target fdf.exe
- Size 3.0MB
- Sample260923-zbtsras19q
- SHA256 811cd46ecbb486d7b506e8af90493a9bfded0d43e49d652f9a46c5e5410f853f
- MD5 4a7b953a5b1e0153d3eaf4c6c24fcfac
- SHA1 3ea49b448902c9cc55ce01ec1683a5c596c4fb39
- SHA512 1c496e333b1f2a1c17d66dac720f86272f8ca6d90a0c33afd559322bd00f96b1c0c982dbf561bd3eee5d7156a262aa1788cc650990316854328d95b48b559278
- SSDEEP 49152:7cONTJmhnmpBZeM9/LwVkFG6X4cFy5FwsAQpDygNAypQxbd2o9JnCmXKqhncFfH1:7crJXlVkzAFwRQprqypSbd2o9JCmX
- TLSH T1FCE512013FEC9D06D0FF2A75E5732DC807B5EE06A652EE4F0940959C0E9B741AE643AB
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
fdf.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
fdf.exe
Resource
win11ltsc2024-20260911-en
Malware Config
Extracted
-
orcus
-
2.26.55.223:10927
-
164643b0d54b4b91a92bb42f2a12019f
-
autostart_method
Disable
-
enable_keylogger
false
-
install_path
%programfiles%\Orcus\Orcus.exe
-
reconnect_delay
10000
-
registry_keyname
Orcus
-
taskscheduler_taskname
Orcus
-
watchdog_path
AppData\OrcusWatchdog.exe
Targets
-
- Target fdf.exe
- Size 3.0MB
- SHA256 811cd46ecbb486d7b506e8af90493a9bfded0d43e49d652f9a46c5e5410f853f
- MD5 4a7b953a5b1e0153d3eaf4c6c24fcfac
- SHA1 3ea49b448902c9cc55ce01ec1683a5c596c4fb39
- SHA512 1c496e333b1f2a1c17d66dac720f86272f8ca6d90a0c33afd559322bd00f96b1c0c982dbf561bd3eee5d7156a262aa1788cc650990316854328d95b48b559278
- SSDEEP 49152:7cONTJmhnmpBZeM9/LwVkFG6X4cFy5FwsAQpDygNAypQxbd2o9JnCmXKqhncFfH1:7crJXlVkzAFwRQprqypSbd2o9JCmX
- TLSH T1FCE512013FEC9D06D0FF2A75E5732DC807B5EE06A652EE4F0940959C0E9B741AE643AB
- MD5 SHA1 SHA512 SSDEEP TLSH
Contains code to disable Windows Defender
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Orcurs Rat Executable
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Loads dropped DLL
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
3Credentials In Files
2Credentials in Registry
1