Analysis
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max time kernel
150s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
07-01-2025 01:02
General
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Target
8a757e772618a81a8239c6b063ede37f73cc27f95ee7f480449cf47469d36355.exe
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Size
919KB
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MD5
f1e3db9b388d01aa8dea9280c47e5af8
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SHA1
54c80baaa30e6149f8f8d972c0bd93618cd8f3e8
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SHA256
8a757e772618a81a8239c6b063ede37f73cc27f95ee7f480449cf47469d36355
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SHA512
bd25df4f559666314a807b8a59c1b201efa95cd4c9afcadd24b39f22035937f87aca15f0369b1ead341c9383e0cc29636afadf51587394f7b5b9ca6caf8f04a4
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SSDEEP
24576:U554MROxnFH3WRM42rrcI0AilFEvxHPMoo4:UQMihWl2rrcI0AilFEvxHP
Malware Config
Extracted
orcus
198.50.242.157:3846
b8577799a70a4ecc93cb8ee5c61b2c7b
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autostart_method
Registry
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enable_keylogger
false
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install_path
%programfiles%\GoogleChromeUpt\Updater.exe
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reconnect_delay
10000
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registry_keyname
ChromeStarter
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taskscheduler_taskname
Start
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watchdog_path
AppData\ChromeDEV.exe
Signatures
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Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
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Orcus family
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Orcus main payload 1 IoCs
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Orcurs Rat Executable 2 IoCs
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Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 6 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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Drops file in System32 directory 3 IoCs
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Drops file in Program Files directory 3 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\8a757e772618a81a8239c6b063ede37f73cc27f95ee7f480449cf47469d36355.exe"C:\Users\Admin\AppData\Local\Temp\8a757e772618a81a8239c6b063ede37f73cc27f95ee7f480449cf47469d36355.exe"1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
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C:\Program Files (x86)\GoogleChromeUpt\Updater.exe"C:\Program Files (x86)\GoogleChromeUpt\Updater.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\ChromeDEV.exe"C:\Users\Admin\AppData\Roaming\ChromeDEV.exe" /launchSelfAndExit "C:\Program Files (x86)\GoogleChromeUpt\Updater.exe" 38683⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\ChromeDEV.exe"C:\Users\Admin\AppData\Roaming\ChromeDEV.exe" /watchProcess "C:\Program Files (x86)\GoogleChromeUpt\Updater.exe" 38684⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
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C:\Program Files (x86)\GoogleChromeUpt\Updater.exe"C:\Program Files (x86)\GoogleChromeUpt\Updater.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
919KB
MD5f1e3db9b388d01aa8dea9280c47e5af8
SHA154c80baaa30e6149f8f8d972c0bd93618cd8f3e8
SHA2568a757e772618a81a8239c6b063ede37f73cc27f95ee7f480449cf47469d36355
SHA512bd25df4f559666314a807b8a59c1b201efa95cd4c9afcadd24b39f22035937f87aca15f0369b1ead341c9383e0cc29636afadf51587394f7b5b9ca6caf8f04a4
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Filesize
425B
MD54eaca4566b22b01cd3bc115b9b0b2196
SHA1e743e0792c19f71740416e7b3c061d9f1336bf94
SHA25634ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb
SHA512bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1
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Filesize
9KB
MD5913967b216326e36a08010fb70f9dba3
SHA17b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf
SHA2568d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a
SHA512c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33
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Filesize
21KB
MD5e6fcf516d8ed8d0d4427f86e08d0d435
SHA1c7691731583ab7890086635cb7f3e4c22ca5e409
SHA2568dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad
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Filesize
32KB
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Filesize
10.8MB
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Filesize
1.0MB
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Filesize
10.8MB
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Filesize
56KB
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Filesize
7.7MB
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Filesize
944KB
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Filesize
136KB
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Filesize
72KB
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Filesize
368KB
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Filesize
7.7MB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
4KB
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Filesize
32KB
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Filesize
1.0MB
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Filesize
64KB
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Filesize
72KB
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Filesize
304KB
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Filesize
240KB
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Filesize
6.1MB
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Filesize
40KB
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Filesize
1.8MB
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Filesize
96KB
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Filesize
312KB
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Filesize
408KB
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Filesize
72KB
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Filesize
10.8MB
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Filesize
8KB
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Filesize
10.8MB
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Filesize
240KB
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Filesize
72KB
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Filesize
48KB