Analysis
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max time kernel
148s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-04-2024 19:53
Static task
static1
Behavioral task
behavioral1
Sample
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe
Resource
win10v2004-20240226-en
General
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Target
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe
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Size
1.8MB
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MD5
62f1fa50f787174efe7b66d2d8cfe678
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SHA1
26154cfcee6f9bce3488bd084da68b41140ee5b2
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SHA256
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911
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SHA512
87957e8747d1944f26365c06fc83c14edd418f0ba46d06f5d07def2ca67cc64b6fc8994bfe2f0f5a3c53d75688936ea31b296157149018e9636ebe9599de5300
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SSDEEP
49152:p+Obyj/KS/tDxWt6qIffufQmd0F3iEfBjk078:p+Obgt/ttWTIfuQmS3FJgF
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:
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exechrosha.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe -
Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exerundll32.exeflow pid process 40 3528 rundll32.exe 48 4828 rundll32.exe -
Downloads MZ/PE file
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Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exechrosha.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion chrosha.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
chrosha.exeloader.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation chrosha.exe Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation loader.exe -
Executes dropped EXE 2 IoCs
Processes:
chrosha.exeloader.exepid process 4608 chrosha.exe 392 loader.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.exe61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine chrosha.exe Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe -
Loads dropped DLL 3 IoCs
Processes:
rundll32.exerundll32.exerundll32.exepid process 4772 rundll32.exe 3528 rundll32.exe 4828 rundll32.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
loader.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 loader.exe Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 loader.exe Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 loader.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 23 ip-api.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exechrosha.exepid process 3400 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe 4608 chrosha.exe -
Drops file in Windows directory 1 IoCs
Processes:
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exedescription ioc process File created C:\Windows\Tasks\chrosha.job 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 2304 timeout.exe -
Suspicious behavior: EnumeratesProcesses 21 IoCs
Processes:
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exechrosha.exeloader.exerundll32.exepowershell.exepid process 3400 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe 3400 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe 4608 chrosha.exe 4608 chrosha.exe 392 loader.exe 392 loader.exe 392 loader.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 3528 rundll32.exe 4604 powershell.exe 4604 powershell.exe 4604 powershell.exe 392 loader.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
loader.exepowershell.exedescription pid process Token: SeDebugPrivilege 392 loader.exe Token: SeDebugPrivilege 4604 powershell.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exepid process 3400 61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe -
Suspicious use of WriteProcessMemory 38 IoCs
Processes:
chrosha.exeloader.execmd.execmd.exerundll32.exerundll32.execmd.exedescription pid process target process PID 4608 wrote to memory of 392 4608 chrosha.exe loader.exe PID 4608 wrote to memory of 392 4608 chrosha.exe loader.exe PID 392 wrote to memory of 3188 392 loader.exe svchost.exe PID 392 wrote to memory of 3188 392 loader.exe svchost.exe PID 392 wrote to memory of 4804 392 loader.exe cmd.exe PID 392 wrote to memory of 4804 392 loader.exe cmd.exe PID 4804 wrote to memory of 1972 4804 cmd.exe chcp.com PID 4804 wrote to memory of 1972 4804 cmd.exe chcp.com PID 4804 wrote to memory of 4580 4804 cmd.exe netsh.exe PID 4804 wrote to memory of 4580 4804 cmd.exe netsh.exe PID 4804 wrote to memory of 3800 4804 cmd.exe findstr.exe PID 4804 wrote to memory of 3800 4804 cmd.exe findstr.exe PID 392 wrote to memory of 1848 392 loader.exe cmd.exe PID 392 wrote to memory of 1848 392 loader.exe cmd.exe PID 1848 wrote to memory of 4044 1848 cmd.exe chcp.com PID 1848 wrote to memory of 4044 1848 cmd.exe chcp.com PID 1848 wrote to memory of 1732 1848 cmd.exe netsh.exe PID 1848 wrote to memory of 1732 1848 cmd.exe netsh.exe PID 1848 wrote to memory of 2076 1848 cmd.exe findstr.exe PID 1848 wrote to memory of 2076 1848 cmd.exe findstr.exe PID 4608 wrote to memory of 4772 4608 chrosha.exe rundll32.exe PID 4608 wrote to memory of 4772 4608 chrosha.exe rundll32.exe PID 4608 wrote to memory of 4772 4608 chrosha.exe rundll32.exe PID 4772 wrote to memory of 3528 4772 rundll32.exe rundll32.exe PID 4772 wrote to memory of 3528 4772 rundll32.exe rundll32.exe PID 3528 wrote to memory of 4828 3528 rundll32.exe netsh.exe PID 3528 wrote to memory of 4828 3528 rundll32.exe netsh.exe PID 3528 wrote to memory of 4604 3528 rundll32.exe powershell.exe PID 3528 wrote to memory of 4604 3528 rundll32.exe powershell.exe PID 4608 wrote to memory of 4828 4608 chrosha.exe rundll32.exe PID 4608 wrote to memory of 4828 4608 chrosha.exe rundll32.exe PID 4608 wrote to memory of 4828 4608 chrosha.exe rundll32.exe PID 392 wrote to memory of 3696 392 loader.exe cmd.exe PID 392 wrote to memory of 3696 392 loader.exe cmd.exe PID 3696 wrote to memory of 3012 3696 cmd.exe chcp.com PID 3696 wrote to memory of 3012 3696 cmd.exe chcp.com PID 3696 wrote to memory of 2304 3696 cmd.exe timeout.exe PID 3696 wrote to memory of 2304 3696 cmd.exe timeout.exe -
outlook_office_path 1 IoCs
Processes:
loader.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 loader.exe -
outlook_win_path 1 IoCs
Processes:
loader.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 loader.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.exe"C:\Users\Admin\AppData\Local\Temp\61bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911.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
- Suspicious use of FindShellTrayWindow
PID:3400
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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
- Checks computer location settings
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4608 -
C:\Users\Admin\AppData\Local\Temp\1000242001\loader.exe"C:\Users\Admin\AppData\Local\Temp\1000242001\loader.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:392 -
C:\Windows\system32\svchost.exesvchost.exe3⤵PID:3188
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C:\Windows\system32\cmd.exe"cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"3⤵
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Windows\system32\chcp.comchcp 650014⤵PID:1972
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C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:4580
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C:\Windows\system32\findstr.exefindstr /R /C:"[ ]:[ ]"4⤵PID:3800
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C:\Windows\system32\cmd.exe"cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"3⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\system32\chcp.comchcp 650014⤵PID:4044
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C:\Windows\system32\netsh.exenetsh wlan show networks mode=bssid4⤵PID:1732
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C:\Windows\system32\findstr.exefindstr "SSID BSSID Signal"4⤵PID:2076
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C chcp 65001 && timeout /t 3 > NUL && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\1000242001\loader.exe"3⤵
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Windows\system32\chcp.comchcp 650014⤵PID:3012
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C:\Windows\system32\timeout.exetimeout /t 34⤵
- Delays execution with timeout.exe
PID:2304
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4772 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3528 -
C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:4828
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\808065738166_Desktop.zip' -CompressionLevel Optimal4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4604
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll, Main2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:4828
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4068 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:81⤵PID:2160
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
479KB
MD5aed761007fae099d18aa07f3508044f7
SHA13d388cc83110f82f36c01a49423c667dcb55918e
SHA256d6178b0a2267a5250f602a5cb8f259b18287173c86f97483e21d482ca7faef77
SHA5129e28a4a008ad8b4e9996c4ae9971e2b626dfa30c290347c06e77efb8d45488e3954205ba702713bde11721959fa7290f76e9f7aaa448d4e02a4cef9e77bcfb2a
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Filesize
1.8MB
MD562f1fa50f787174efe7b66d2d8cfe678
SHA126154cfcee6f9bce3488bd084da68b41140ee5b2
SHA25661bc0d72cc30e7f914eeb188d5e184dbcc06b9c2c1a95f40f2d691814e46e911
SHA51287957e8747d1944f26365c06fc83c14edd418f0ba46d06f5d07def2ca67cc64b6fc8994bfe2f0f5a3c53d75688936ea31b296157149018e9636ebe9599de5300
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
109KB
MD5154c3f1334dd435f562672f2664fea6b
SHA151dd25e2ba98b8546de163b8f26e2972a90c2c79
SHA2565f431129f97f3d56929f1e5584819e091bd6c854d7e18503074737fc6d79e33f
SHA5121bca69bbcdb7ecd418769e9d4befc458f9f8e3cee81feb7316bb61e189e2904f4431e4cc7d291e179a5dec441b959d428d8e433f579036f763bbad6460222841
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Filesize
1.2MB
MD5f35b671fda2603ec30ace10946f11a90
SHA1059ad6b06559d4db581b1879e709f32f80850872
SHA25683e3df5bec15d5333935bea8b719a6d677e2fb3dc1cf9e18e7b82fd0438285c7
SHA512b5fa27d08c64727cef7fdda5e68054a4359cd697df50d70d1d90da583195959a139066a6214531bbc5f20cd4f9bc1ca3e4244396547381291a6a1d2df9cf8705