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