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Analysis
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max time kernel
146s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
17/04/2024, 21:28
Static task
static1
Behavioral task
behavioral1
Sample
f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe
Resource
win10v2004-20240412-en
General
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Target
f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe
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Size
1.8MB
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MD5
ed8d95be7ff7da6f2ac46cada635870c
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SHA1
849b5a1d24c87b5840055a3b87977d9a9ce1c221
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SHA256
f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2
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SHA512
17897799aea0b43e1945739632f6e3ea0f3f8a3f0f705fe9fc8e7213ec6f6a1a640884b184d7166deedf9c5b3d8e9856ebb43cadc1f561c1c49cd439c56796b6
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SSDEEP
49152:+t9ZMm/MCTr6vlhs+zfoSSOvG7bW00MI6:QfZJTascfoPOvG7bW0o6
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
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ chrosha.exe -
Blocklisted process makes network request 2 IoCs
flow pid Process 50 2112 rundll32.exe 52 3640 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.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion chrosha.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation chrosha.exe -
Executes dropped EXE 2 IoCs
pid Process 640 chrosha.exe 948 build_1GyXIDXRUC.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.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Software\Wine f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe Key opened \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Software\Wine chrosha.exe -
Loads dropped DLL 3 IoCs
pid Process 5044 rundll32.exe 2112 rundll32.exe 3640 rundll32.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 45 ip-api.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 2900 f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe 640 chrosha.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 948 set thread context of 3048 948 build_1GyXIDXRUC.exe 94 -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Tasks\chrosha.job f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 2900 f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe 2900 f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe 640 chrosha.exe 640 chrosha.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 2112 rundll32.exe 1056 powershell.exe 1056 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3048 RegAsm.exe Token: SeDebugPrivilege 1056 powershell.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2900 f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 640 wrote to memory of 948 640 chrosha.exe 92 PID 640 wrote to memory of 948 640 chrosha.exe 92 PID 640 wrote to memory of 948 640 chrosha.exe 92 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 948 wrote to memory of 3048 948 build_1GyXIDXRUC.exe 94 PID 640 wrote to memory of 5044 640 chrosha.exe 95 PID 640 wrote to memory of 5044 640 chrosha.exe 95 PID 640 wrote to memory of 5044 640 chrosha.exe 95 PID 5044 wrote to memory of 2112 5044 rundll32.exe 96 PID 5044 wrote to memory of 2112 5044 rundll32.exe 96 PID 2112 wrote to memory of 4540 2112 rundll32.exe 97 PID 2112 wrote to memory of 4540 2112 rundll32.exe 97 PID 2112 wrote to memory of 1056 2112 rundll32.exe 99 PID 2112 wrote to memory of 1056 2112 rundll32.exe 99 PID 640 wrote to memory of 3640 640 chrosha.exe 101 PID 640 wrote to memory of 3640 640 chrosha.exe 101 PID 640 wrote to memory of 3640 640 chrosha.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.exe"C:\Users\Admin\AppData\Local\Temp\f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2.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:2900
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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:640 -
C:\Users\Admin\AppData\Local\Temp\1000167001\build_1GyXIDXRUC.exe"C:\Users\Admin\AppData\Local\Temp\1000167001\build_1GyXIDXRUC.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:948 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵
- Suspicious use of AdjustPrivilegeToken
PID:3048
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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:5044 -
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:2112 -
C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:4540
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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\536055032331_Desktop.zip' -CompressionLevel Optimal4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1056
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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:3640
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
210KB
MD551b0ed6b4908a21e5cc1d9ec7c046040
SHA1d874f6da7327b2f1b3ace5e66bc763c557ac382e
SHA2564e68c5a537320cbe88842a53e5691b7f1a590b9c0b491a12baaeeda111dcaa4d
SHA51248ec96b209d7061a1276496feb250cf183891b950465d3a916c999aa1efc1c8831b068ce0fce4ce21d09677f945b3d816ed4040146462a0ce0845318041586a2
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Filesize
1.8MB
MD5ed8d95be7ff7da6f2ac46cada635870c
SHA1849b5a1d24c87b5840055a3b87977d9a9ce1c221
SHA256f9cde14566b4688d0565dbc86f5f1b22f065991db05717db6e6e365ca04408a2
SHA51217897799aea0b43e1945739632f6e3ea0f3f8a3f0f705fe9fc8e7213ec6f6a1a640884b184d7166deedf9c5b3d8e9856ebb43cadc1f561c1c49cd439c56796b6
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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