Analysis
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max time kernel
147s -
max time network
135s -
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 00:56
Static task
static1
Behavioral task
behavioral1
Sample
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe
Resource
win10v2004-20240426-en
General
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Target
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe
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Size
1.8MB
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MD5
fe3346ec5bed65ea2f056fb8898a2f5c
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SHA1
6049004590734a9ba8124d9b7779a0d8ccd0ff2b
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SHA256
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483
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SHA512
dbed2b9a6de8a1646e167ef74db323e458cf3a7b1518cbf412f66c04db470d232018ce600f5ee0a56c6f47975e2435061a24b564814da190e5c3f2ff434991c1
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SSDEEP
49152:+aBIARUgsrH0gdAzgjWKKqv6eGN5US9FnGjV/5rX:9B3UgsDTmEdKqvbGNJ9dCx5r
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:
chrosha.exeb5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
chrosha.exeb5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion chrosha.exe -
Executes dropped EXE 1 IoCs
Processes:
chrosha.exepid process 3024 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:
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exechrosha.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-891789021-684472942-1795878712-1000\Software\Wine b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe Key opened \REGISTRY\USER\S-1-5-21-891789021-684472942-1795878712-1000\Software\Wine chrosha.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exechrosha.exepid process 388 b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe 3024 chrosha.exe -
Drops file in Windows directory 1 IoCs
Processes:
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exedescription ioc process File created C:\Windows\Tasks\chrosha.job b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.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:
b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exechrosha.exepid process 388 b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe 388 b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe 3024 chrosha.exe 3024 chrosha.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.exe"C:\Users\Admin\AppData\Local\Temp\b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483.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
PID:388
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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
PID:3024
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.8MB
MD5fe3346ec5bed65ea2f056fb8898a2f5c
SHA16049004590734a9ba8124d9b7779a0d8ccd0ff2b
SHA256b5973db1b5c044c534a9f809bc2c45b486373325ce1cfd75ff4600f00fd59483
SHA512dbed2b9a6de8a1646e167ef74db323e458cf3a7b1518cbf412f66c04db470d232018ce600f5ee0a56c6f47975e2435061a24b564814da190e5c3f2ff434991c1