Analysis
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max time kernel
123s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 11:44
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220901-en
General
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Target
file.exe
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Size
205KB
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MD5
329efa3db8a908218487fc3607b73df6
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SHA1
72a8b995f97eab399ccb22601fb3cf6df57e8a3b
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SHA256
ac1b14a61b42f49c95ef6e893877bec973d3108d827535ab4885b051e9fed090
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SHA512
058d418bab2b27612d840b52a1746ec88477326c02aeeeb200e40568a2e400219bf0ad42c9adeed8426dd55104843894699ee7e0d46a0417a978b4d5c1257e9a
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SSDEEP
3072:j5DwZqXmYh5wI1vmnN4zgQB8XnlWOi5tYPh65pYQ1:JyqXmPI1v8IBBQlDi5gYT
Malware Config
Extracted
amadey
3.50
31.41.244.17/hfk3vK9/index.php
Signatures
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Detect Amadey credential stealer module 4 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll amadey_cred_module behavioral2/memory/3752-152-0x0000000000790000-0x00000000007B4000-memory.dmp amadey_cred_module C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll amadey_cred_module C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll amadey_cred_module -
Blocklisted process makes network request 1 IoCs
Processes:
rundll32.exeflow pid process 38 3752 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 3 IoCs
Processes:
gntuud.exegntuud.exegntuud.exepid process 3808 gntuud.exe 4600 gntuud.exe 2372 gntuud.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
file.exegntuud.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation gntuud.exe -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exepid process 3752 rundll32.exe 3752 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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Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 3 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exepid pid_target process target process 1348 2632 WerFault.exe file.exe 2124 4600 WerFault.exe gntuud.exe 1044 2372 WerFault.exe gntuud.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
rundll32.exepid process 3752 rundll32.exe 3752 rundll32.exe 3752 rundll32.exe 3752 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 2632 wrote to memory of 3808 2632 file.exe gntuud.exe PID 2632 wrote to memory of 3808 2632 file.exe gntuud.exe PID 2632 wrote to memory of 3808 2632 file.exe gntuud.exe PID 3808 wrote to memory of 3760 3808 gntuud.exe schtasks.exe PID 3808 wrote to memory of 3760 3808 gntuud.exe schtasks.exe PID 3808 wrote to memory of 3760 3808 gntuud.exe schtasks.exe PID 3808 wrote to memory of 3752 3808 gntuud.exe rundll32.exe PID 3808 wrote to memory of 3752 3808 gntuud.exe rundll32.exe PID 3808 wrote to memory of 3752 3808 gntuud.exe rundll32.exe -
outlook_win_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe"C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe"2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3808 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN gntuud.exe /TR "C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe" /F3⤵
- Creates scheduled task(s)
PID:3760 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dll, Main3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- outlook_win_path
PID:3752 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2632 -s 11082⤵
- Program crash
PID:1348
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2632 -ip 26321⤵PID:3680
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeC:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe1⤵
- Executes dropped EXE
PID:4600 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4600 -s 4162⤵
- Program crash
PID:2124
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4600 -ip 46001⤵PID:4092
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeC:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe1⤵
- Executes dropped EXE
PID:2372 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 4162⤵
- Program crash
PID:1044
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 388 -p 2372 -ip 23721⤵PID:4420
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5329efa3db8a908218487fc3607b73df6
SHA172a8b995f97eab399ccb22601fb3cf6df57e8a3b
SHA256ac1b14a61b42f49c95ef6e893877bec973d3108d827535ab4885b051e9fed090
SHA512058d418bab2b27612d840b52a1746ec88477326c02aeeeb200e40568a2e400219bf0ad42c9adeed8426dd55104843894699ee7e0d46a0417a978b4d5c1257e9a
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5329efa3db8a908218487fc3607b73df6
SHA172a8b995f97eab399ccb22601fb3cf6df57e8a3b
SHA256ac1b14a61b42f49c95ef6e893877bec973d3108d827535ab4885b051e9fed090
SHA512058d418bab2b27612d840b52a1746ec88477326c02aeeeb200e40568a2e400219bf0ad42c9adeed8426dd55104843894699ee7e0d46a0417a978b4d5c1257e9a
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5329efa3db8a908218487fc3607b73df6
SHA172a8b995f97eab399ccb22601fb3cf6df57e8a3b
SHA256ac1b14a61b42f49c95ef6e893877bec973d3108d827535ab4885b051e9fed090
SHA512058d418bab2b27612d840b52a1746ec88477326c02aeeeb200e40568a2e400219bf0ad42c9adeed8426dd55104843894699ee7e0d46a0417a978b4d5c1257e9a
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5329efa3db8a908218487fc3607b73df6
SHA172a8b995f97eab399ccb22601fb3cf6df57e8a3b
SHA256ac1b14a61b42f49c95ef6e893877bec973d3108d827535ab4885b051e9fed090
SHA512058d418bab2b27612d840b52a1746ec88477326c02aeeeb200e40568a2e400219bf0ad42c9adeed8426dd55104843894699ee7e0d46a0417a978b4d5c1257e9a
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C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dllFilesize
126KB
MD5adbaf286228c46522e50371c4be31a03
SHA1a29d644c4663b2e2b2bd92046ba0df629537c297
SHA256d3e9a3365f73a34e2dd9022a318abcc2c55af98bafb2dc302cbb55f5398bb9a0
SHA51274a55cc8d8c3af54e5ba290a34b968918da994ea2d55b5f0d1f39e83cb9a39d73226227933c760b48f2e0bdb646f8243967517ef8202e02d88411d2d19ae217d
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C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dllFilesize
126KB
MD5adbaf286228c46522e50371c4be31a03
SHA1a29d644c4663b2e2b2bd92046ba0df629537c297
SHA256d3e9a3365f73a34e2dd9022a318abcc2c55af98bafb2dc302cbb55f5398bb9a0
SHA51274a55cc8d8c3af54e5ba290a34b968918da994ea2d55b5f0d1f39e83cb9a39d73226227933c760b48f2e0bdb646f8243967517ef8202e02d88411d2d19ae217d
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C:\Users\Admin\AppData\Roaming\56a1c3d463f381\cred64.dllFilesize
126KB
MD5adbaf286228c46522e50371c4be31a03
SHA1a29d644c4663b2e2b2bd92046ba0df629537c297
SHA256d3e9a3365f73a34e2dd9022a318abcc2c55af98bafb2dc302cbb55f5398bb9a0
SHA51274a55cc8d8c3af54e5ba290a34b968918da994ea2d55b5f0d1f39e83cb9a39d73226227933c760b48f2e0bdb646f8243967517ef8202e02d88411d2d19ae217d
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memory/2372-154-0x0000000000BD0000-0x0000000000BEF000-memory.dmpFilesize
124KB
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memory/2372-155-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/2372-156-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/2632-139-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/2632-138-0x0000000000DDD000-0x0000000000DFC000-memory.dmpFilesize
124KB
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memory/2632-134-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/2632-133-0x0000000000C70000-0x0000000000CAE000-memory.dmpFilesize
248KB
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memory/2632-132-0x0000000000DDD000-0x0000000000DFC000-memory.dmpFilesize
124KB
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memory/3752-152-0x0000000000790000-0x00000000007B4000-memory.dmpFilesize
144KB
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memory/3752-148-0x0000000000000000-mapping.dmp
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memory/3760-141-0x0000000000000000-mapping.dmp
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memory/3808-144-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3808-143-0x0000000000B7C000-0x0000000000B9B000-memory.dmpFilesize
124KB
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memory/3808-142-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3808-140-0x0000000000B7C000-0x0000000000B9B000-memory.dmpFilesize
124KB
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memory/3808-135-0x0000000000000000-mapping.dmp
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memory/4600-147-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4600-146-0x0000000000B40000-0x0000000000B5F000-memory.dmpFilesize
124KB