Analysis
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max time kernel
153s -
max time network
167s -
platform
windows11-21h2_x64 -
resource
win11-20240319-en -
resource tags
arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system -
submitted
31-03-2024 10:55
Static task
static1
Behavioral task
behavioral1
Sample
f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe
Resource
win10v2004-20240226-en
General
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Target
f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe
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Size
1.8MB
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MD5
6bc7c14642d462d96a1f7b83e32efca6
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SHA1
234919900d6a3cd614c55467a7bd3a0fe2365325
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SHA256
f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604
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SHA512
f8c59ed61bd33f6b6228b7a8f6b1106146cd80e4734f9654f2e25b7cdef21030353d2b756b79cda68dce8b51738d277d6c7fdc694616985ac2790384c55892f4
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SSDEEP
49152:qqaSCQJ7XPDwabxEpJATIiWk7tJ9LthxowRtmPi5:ESCy7rwQai57rFlow+P
Malware Config
Extracted
amadey
4.17
http://185.215.113.32
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install_dir
00c07260dc
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install_file
explorgu.exe
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strings_key
461809bd97c251ba0c0c8450c7055f1d
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url_paths
/yandex/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__ f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorgu.exe -
Blocklisted process makes network request 2 IoCs
flow pid Process 3 4772 rundll32.exe 4 1296 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 f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorgu.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorgu.exe -
Executes dropped EXE 1 IoCs
pid Process 4908 explorgu.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-1-5-21-1233663403-1277323514-675434005-1000\Software\Wine f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe Key opened \REGISTRY\USER\S-1-5-21-1233663403-1277323514-675434005-1000\Software\Wine explorgu.exe -
Loads dropped DLL 3 IoCs
pid Process 4000 rundll32.exe 4772 rundll32.exe 1296 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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Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 4616 f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe 4908 explorgu.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\Tasks\explorgu.job f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.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 4616 f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe 4616 f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe 4908 explorgu.exe 4908 explorgu.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 4772 rundll32.exe 672 powershell.exe 672 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 672 powershell.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4616 f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4908 wrote to memory of 4000 4908 explorgu.exe 77 PID 4908 wrote to memory of 4000 4908 explorgu.exe 77 PID 4908 wrote to memory of 4000 4908 explorgu.exe 77 PID 4000 wrote to memory of 4772 4000 rundll32.exe 78 PID 4000 wrote to memory of 4772 4000 rundll32.exe 78 PID 4772 wrote to memory of 4888 4772 rundll32.exe 79 PID 4772 wrote to memory of 4888 4772 rundll32.exe 79 PID 4772 wrote to memory of 672 4772 rundll32.exe 81 PID 4772 wrote to memory of 672 4772 rundll32.exe 81 PID 4908 wrote to memory of 1296 4908 explorgu.exe 83 PID 4908 wrote to memory of 1296 4908 explorgu.exe 83 PID 4908 wrote to memory of 1296 4908 explorgu.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.exe"C:\Users\Admin\AppData\Local\Temp\f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604.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:4616
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C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exeC:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.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
- Suspicious use of WriteProcessMemory
PID:4908 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4000 -
C:\Windows\system32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4772 -
C:\Windows\system32\netsh.exenetsh wlan show profiles4⤵PID:4888
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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\233663403127_Desktop.zip' -CompressionLevel Optimal4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:672
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main2⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:1296
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD56bc7c14642d462d96a1f7b83e32efca6
SHA1234919900d6a3cd614c55467a7bd3a0fe2365325
SHA256f16a8a81dc524194805dc309f0b4b7fa973b04fd05a6a5debe8bd04647f74604
SHA512f8c59ed61bd33f6b6228b7a8f6b1106146cd80e4734f9654f2e25b7cdef21030353d2b756b79cda68dce8b51738d277d6c7fdc694616985ac2790384c55892f4
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
109KB
MD52afdbe3b99a4736083066a13e4b5d11a
SHA14d4856cf02b3123ac16e63d4a448cdbcb1633546
SHA2568d31b39170909595b518b1a03e9ec950540fabd545ed14817cac5c84b91599ee
SHA512d89b3c46854153e60e3fa825b394344eee33936d7dbf186af9d95c9adae54428609e3bf21a18d38fce3d96f3e0b8e4e0ed25cb5004fbe288de3aef3a85b1d93f
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Filesize
1.2MB
MD592fbdfccf6a63acef2743631d16652a7
SHA1971968b1378dd89d59d7f84bf92f16fc68664506
SHA256b4588feacc183cd5a089f9bb950827b75df04bd5a6e67c95ff258e4a34aa0d72
SHA512b8ea216d4a59d8858fd4128abb555f8dcf3acca9138e663b488f09dc5200db6dc11ecc235a355e801145bbbb44d7beac6147949d75d78b32fe9cfd2fa200d117