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Analysis
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max time kernel
126s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
31/01/2025, 01:23
Behavioral task
behavioral1
Sample
225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
Resource
win7-20240903-en
General
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Target
225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
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Size
3.0MB
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MD5
c0425594cb2719131850869093fdac64
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SHA1
57801983f722353632cbe6338619f274c59d5caf
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SHA256
225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9
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SHA512
a48f63e4b44522c61feff0a7d44af41250ba3264c989d8e1e50c7fee0c4b90b5a3e2b7984da5098874d4368cd7196419b9815b4fe002558ddecafa225cdaf328
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SSDEEP
49152:4s7p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpau/nRFfjI7L0qb:4sHTPJg8z1mKnypSbRxo9JCm
Malware Config
Extracted
orcus
niggers
31.44.184.52:16749
sudo_ai8hybb6bfsu8cdberulrqxurblwtews
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autostart_method
Disable
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enable_keylogger
false
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install_path
%appdata%\cpuflower\windowsauth.exe
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reconnect_delay
10000
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registry_keyname
Sudik
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taskscheduler_taskname
sudik
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watchdog_path
AppData\aga.exe
Signatures
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Orcus family
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Orcus main payload 1 IoCs
resource yara_rule behavioral1/files/0x000700000001868b-10.dat family_orcus -
Orcurs Rat Executable 8 IoCs
resource yara_rule behavioral1/memory/2172-1-0x0000000001010000-0x000000000130E000-memory.dmp orcus behavioral1/files/0x000700000001868b-10.dat orcus behavioral1/memory/1264-18-0x00000000012C0000-0x00000000015BE000-memory.dmp orcus behavioral1/memory/2708-31-0x0000000000400000-0x00000000006FE000-memory.dmp orcus behavioral1/memory/2708-33-0x0000000000400000-0x00000000006FE000-memory.dmp orcus behavioral1/memory/2708-30-0x0000000000400000-0x00000000006FE000-memory.dmp orcus behavioral1/memory/2708-27-0x0000000000400000-0x00000000006FE000-memory.dmp orcus behavioral1/memory/2708-25-0x0000000000400000-0x00000000006FE000-memory.dmp orcus -
Executes dropped EXE 4 IoCs
pid Process 1264 windowsauth.exe 2752 windowsauth.exe 2904 windowsauth.exe 1768 windowsauth.exe -
Loads dropped DLL 1 IoCs
pid Process 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1264 set thread context of 2708 1264 windowsauth.exe 33 -
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 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language windowsauth.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language windowsauth.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language windowsauth.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language installutil.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language windowsauth.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe 1264 windowsauth.exe 1264 windowsauth.exe 2708 installutil.exe 2708 installutil.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe Token: SeDebugPrivilege 1264 windowsauth.exe Token: SeDebugPrivilege 2708 installutil.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 2172 wrote to memory of 1264 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe 31 PID 2172 wrote to memory of 1264 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe 31 PID 2172 wrote to memory of 1264 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe 31 PID 2172 wrote to memory of 1264 2172 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe 31 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 1264 wrote to memory of 2708 1264 windowsauth.exe 33 PID 784 wrote to memory of 2752 784 taskeng.exe 34 PID 784 wrote to memory of 2752 784 taskeng.exe 34 PID 784 wrote to memory of 2752 784 taskeng.exe 34 PID 784 wrote to memory of 2752 784 taskeng.exe 34 PID 784 wrote to memory of 2904 784 taskeng.exe 36 PID 784 wrote to memory of 2904 784 taskeng.exe 36 PID 784 wrote to memory of 2904 784 taskeng.exe 36 PID 784 wrote to memory of 2904 784 taskeng.exe 36 PID 784 wrote to memory of 1768 784 taskeng.exe 38 PID 784 wrote to memory of 1768 784 taskeng.exe 38 PID 784 wrote to memory of 1768 784 taskeng.exe 38 PID 784 wrote to memory of 1768 784 taskeng.exe 38
Processes
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C:\Users\Admin\AppData\Local\Temp\225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe"C:\Users\Admin\AppData\Local\Temp\225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe"C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1264 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2708
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C:\Windows\system32\taskeng.exetaskeng.exe {72A7E93F-BAF4-4BA1-A7F9-DEBD9CB0A3F6} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exeC:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2752
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C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exeC:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2904
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C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exeC:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1768
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad
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Filesize
3.0MB
MD5c0425594cb2719131850869093fdac64
SHA157801983f722353632cbe6338619f274c59d5caf
SHA256225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9
SHA512a48f63e4b44522c61feff0a7d44af41250ba3264c989d8e1e50c7fee0c4b90b5a3e2b7984da5098874d4368cd7196419b9815b4fe002558ddecafa225cdaf328