Analysis
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max time kernel
103s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
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submitted
04/04/2025, 16:13
General
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Target
Kira.exe
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Size
3.3MB
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MD5
35e41d1dc3e84b3eea60b9809199f3fa
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SHA1
b8d2154bb56f0ad94effa5e8c57f4b51e345bf73
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SHA256
dd3ee854f6f62c1c964b74dc71fce2da6d29bdf1b8320f5173b1bce54e7c3413
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SHA512
a1cd7dc83a0304c46fdf0fe4855880f4d97a18fdef321674a4d00bade7afd8ea64530c55e1a9bd1e1ffce196ee7957f5227d42fdb9f33ecda8b8fae29d11c77a
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SSDEEP
49152:gHBVPVP2ym8r2JdVTWRh1/6/R1I9AihZZ7WEqnXrtRI93iS5TChmqrjyBE3Hi8uy:iRAMBChm+jwE3HSOZssBs+H
Malware Config
Extracted
orcus
213.209.143.58:2095
95c074471a264ae6acae057c3ed47a24
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autostart_method
TaskScheduler
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enable_keylogger
true
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install_path
%programfiles%\Nirsoft\sihost.exe
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reconnect_delay
10000
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registry_keyname
Orcus
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taskscheduler_taskname
Realtek Audio Driver
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watchdog_path
AppData\winsvrc.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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Orcurs Rat Executable 1 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 2 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 3 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 use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of FindShellTrayWindow 1 IoCs
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Suspicious use of SendNotifyMessage 1 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Kira.exe"C:\Users\Admin\AppData\Local\Temp\Kira.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Nirsoft\sihost.exe"C:\Program Files (x86)\Nirsoft\sihost.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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C:\Program Files (x86)\Nirsoft\sihost.exe"C:\Program Files (x86)\Nirsoft\sihost.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
3.3MB
MD535e41d1dc3e84b3eea60b9809199f3fa
SHA1b8d2154bb56f0ad94effa5e8c57f4b51e345bf73
SHA256dd3ee854f6f62c1c964b74dc71fce2da6d29bdf1b8320f5173b1bce54e7c3413
SHA512a1cd7dc83a0304c46fdf0fe4855880f4d97a18fdef321674a4d00bade7afd8ea64530c55e1a9bd1e1ffce196ee7957f5227d42fdb9f33ecda8b8fae29d11c77a
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad
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Filesize
408KB
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Filesize
916KB
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Filesize
1.0MB
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Filesize
304KB
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Filesize
240KB
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Filesize
72KB
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Filesize
96KB
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Filesize
40KB
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Filesize
6.1MB
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Filesize
1.8MB
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Filesize
916KB
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Filesize
96KB
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Filesize
312KB
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Filesize
64KB
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Filesize
916KB
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Filesize
368KB
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Filesize
916KB
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Filesize
928KB
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Filesize
56KB
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Filesize
72KB
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Filesize
5.6MB
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Filesize
584KB