Analysis
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max time kernel
148s -
max time network
152s -
platform
windows11-21h2_x64 -
resource
win11-20240419-en -
resource tags
arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system -
submitted
28-04-2024 03:27
Static task
static1
Behavioral task
behavioral1
Sample
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe
Resource
win10v2004-20240419-en
General
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Target
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe
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Size
1.8MB
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MD5
863fdb1b3a20d1061ab13283438ff9ba
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SHA1
976b66a2ce413ca6b8514b369f68eb4a237c1436
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SHA256
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67
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SHA512
a0cce4013b2e76af00ba61fa9b72e9e27341d15d7de6d834f2289329d69ec3e9b0f41a4f1f60f2506a94f0c0114e626c20b49307fd81083b2189405b1e1f858c
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SSDEEP
49152:Uqo9Kvu7k6EyLD4j6xAwOA1I31VZu20/skfm:US4bLkj6xAPAu3c2g
Malware Config
Extracted
amadey
4.17
http://193.233.132.167
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install_dir
4d0ab15804
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install_file
chrosha.exe
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strings_key
1a9519d7b465e1f4880fa09a6162d768
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url_paths
/enigma/index.php
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
Processes:
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exechrosha.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exechrosha.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion chrosha.exe -
Executes dropped EXE 1 IoCs
Processes:
chrosha.exepid process 2504 chrosha.exe -
Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
Processes:
chrosha.exe4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\Software\Wine chrosha.exe Key opened \REGISTRY\USER\S-1-5-21-734199974-1358367239-436541239-1000\Software\Wine 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exechrosha.exepid process 3452 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe 2504 chrosha.exe -
Drops file in Windows directory 1 IoCs
Processes:
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exedescription ioc process File created C:\Windows\Tasks\chrosha.job 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exechrosha.exepid process 3452 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe 3452 4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe 2504 chrosha.exe 2504 chrosha.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe"C:\Users\Admin\AppData\Local\Temp\4b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
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C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exeC:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\4d0ab15804\chrosha.exeFilesize
1.8MB
MD5863fdb1b3a20d1061ab13283438ff9ba
SHA1976b66a2ce413ca6b8514b369f68eb4a237c1436
SHA2564b06de871b297f9208c7211bf674b239fa8c83a6996746d6991bbdaa884a0e67
SHA512a0cce4013b2e76af00ba61fa9b72e9e27341d15d7de6d834f2289329d69ec3e9b0f41a4f1f60f2506a94f0c0114e626c20b49307fd81083b2189405b1e1f858c
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memory/2504-30-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-18-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-39-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-24-0x0000000004B10000-0x0000000004B11000-memory.dmpFilesize
4KB
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memory/2504-38-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-37-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-36-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-23-0x0000000004B80000-0x0000000004B81000-memory.dmpFilesize
4KB
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memory/2504-35-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-34-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-33-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-29-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-19-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-22-0x0000000004B30000-0x0000000004B31000-memory.dmpFilesize
4KB
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memory/2504-26-0x0000000004B70000-0x0000000004B71000-memory.dmpFilesize
4KB
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memory/2504-25-0x0000000004B20000-0x0000000004B21000-memory.dmpFilesize
4KB
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memory/2504-32-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-31-0x0000000000D40000-0x00000000011EE000-memory.dmpFilesize
4.7MB
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memory/2504-20-0x0000000004B40000-0x0000000004B41000-memory.dmpFilesize
4KB
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memory/2504-21-0x0000000004B50000-0x0000000004B51000-memory.dmpFilesize
4KB
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memory/2504-28-0x0000000004B90000-0x0000000004B91000-memory.dmpFilesize
4KB
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memory/2504-27-0x0000000004BA0000-0x0000000004BA1000-memory.dmpFilesize
4KB
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memory/3452-15-0x0000000000500000-0x00000000009AE000-memory.dmpFilesize
4.7MB
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memory/3452-0-0x0000000000500000-0x00000000009AE000-memory.dmpFilesize
4.7MB
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memory/3452-9-0x0000000004FD0000-0x0000000004FD1000-memory.dmpFilesize
4KB
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memory/3452-6-0x0000000004F50000-0x0000000004F51000-memory.dmpFilesize
4KB
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memory/3452-1-0x00000000772D6000-0x00000000772D8000-memory.dmpFilesize
8KB
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memory/3452-2-0x0000000000500000-0x00000000009AE000-memory.dmpFilesize
4.7MB
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memory/3452-8-0x0000000004FE0000-0x0000000004FE1000-memory.dmpFilesize
4KB
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memory/3452-3-0x0000000004F80000-0x0000000004F81000-memory.dmpFilesize
4KB
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memory/3452-4-0x0000000004F70000-0x0000000004F71000-memory.dmpFilesize
4KB
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memory/3452-5-0x0000000004FB0000-0x0000000004FB1000-memory.dmpFilesize
4KB
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memory/3452-7-0x0000000004F60000-0x0000000004F61000-memory.dmpFilesize
4KB