General
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Target
resembleC2.exe
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Size
763KB
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Sample
250112-d2hyaawqbm
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MD5
f70fb0eacdba5672bd67ff9ad29e425b
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SHA1
35c7ad26473afb12c8b46dfb51f3e0d73b92a7eb
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SHA256
325ec7369a18af43c95815bacf830f5bcd1093436c25f67685226fe0d4812280
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SHA512
e93012796de946c4b009d9c68a539ea010d88952c11ddd0fc05d3d4ebe1657f16a7f75269e2c6075c12564f40752c7f4aec0c64583ffb46d06ec69431e5f6ff5
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SSDEEP
12288:wjB1GbyBRc8nAVCCpViLkSdIi/NvFFuHtHylX5mmYKlzQUG1R9qRst2hmKyL/mVD:wjB1myBRccwf/SdNFvFFu1yh5zlzY1RS
Static task
static1
Behavioral task
behavioral1
Sample
resembleC2.exe
Resource
win7-20240903-en
Malware Config
Extracted
orcus
9across-entitled.gl.at.ply.gg
cac3aa9158e541b28ce1c4890a52661d
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administration_rights_required
false
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anti_debugger
false
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anti_tcp_analyzer
false
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antivm
false
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autostart_method
1
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change_creation_date
false
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force_installer_administrator_privileges
false
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hide_file
false
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install
false
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installation_folder
%appdata%\Microsoft\Speech\AudioDriver.exe
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installservice
false
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keylogger_enabled
false
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newcreationdate
01/12/2025 04:15:11
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plugins
AgUFyfihswTdIPqEArukcmEdSF06Hw9CAFMAbwBEACAAUAByAG8AdABlAGMAdABpAG8AbgAHAzEALgAwAEEgNwBkAGUAYQAzAGQAZgBhAGUAZQBjAGEANABjADcAYQA5ADcAZABiAGYAZQBlADUAMQAyADIAMgA1ADYAMgA3AAEFl6aNkQPXkQKOmwKLvFcpr24sKCsVRABpAHMAYQBiAGwAZQAgAFcAZQBiAGMAYQBtACAATABpAGcAaAB0AHMABwMxAC4AMABBIGUANABhADUAZgAzADIANwAzADkANQBjADQAOQA5ADUAYgA3ADgAYQA1ADYAYwBhAGYAMwAzAGIANgAzADQANgABAAAEBA==
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reconnect_delay
10000
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registry_autostart_keyname
Audio HD Driver
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registry_hidden_autostart
false
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set_admin_flag
false
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tasksch_name
Audio HD Driver
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tasksch_request_highest_privileges
false
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try_other_autostart_onfail
false
Extracted
umbral
https://discord.com/api/webhooks/1326652489054818346/f_cBTMEYAkXYcTbEkW-MUwYrefMORTfuoofsZ5ymJ5yR8BQpohmaCuB-PwAuIP1xAUKw
Targets
-
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Target
resembleC2.exe
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Size
763KB
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MD5
f70fb0eacdba5672bd67ff9ad29e425b
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SHA1
35c7ad26473afb12c8b46dfb51f3e0d73b92a7eb
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SHA256
325ec7369a18af43c95815bacf830f5bcd1093436c25f67685226fe0d4812280
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SHA512
e93012796de946c4b009d9c68a539ea010d88952c11ddd0fc05d3d4ebe1657f16a7f75269e2c6075c12564f40752c7f4aec0c64583ffb46d06ec69431e5f6ff5
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SSDEEP
12288:wjB1GbyBRc8nAVCCpViLkSdIi/NvFFuHtHylX5mmYKlzQUG1R9qRst2hmKyL/mVD:wjB1myBRccwf/SdNFvFFu1yh5zlzY1RS
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Detect Umbral payload
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Orcus family
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Umbral family
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Drops file in Drivers directory
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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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Drops desktop.ini file(s)
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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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MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1