Analysis
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max time kernel
173s -
max time network
203s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 09:32
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
General
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Target
file.exe
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Size
205KB
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MD5
a6095319c7f53cc8c5865dbcc9f2eb8c
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SHA1
cc2af3aa3d9fabe53412efa33176b283900f1bde
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SHA256
7c719af6e45ccff940b1202e03e3efdde9f3dce064384c5e536ca67e3846861b
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SHA512
09520a2aae7d957bf4e977253e5eb08e99ed58a3063ef02dad06666f3c96e85ad7d1d64ab474abe96c771f613ddd1392ab2228501f534f93f668cb6d81756d9d
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SSDEEP
3072:hjcrZ+YRcF5b4UqhWbXtUhHSGiyKJPog6wQI7Y4Z5W8EF:e+YA4cbXtfZyZCP/W8
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/3308-154-0x0000000000F60000-0x0000000000F84000-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 72 3308 rundll32.exe -
Executes dropped EXE 2 IoCs
Processes:
gntuud.exegntuud.exepid process 3256 gntuud.exe 4964 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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation gntuud.exe -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exepid process 3308 rundll32.exe 3308 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-1-5-21-4246620582-653642754-1174164128-1000\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 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 328 4676 WerFault.exe file.exe 2728 4964 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 3308 rundll32.exe 3308 rundll32.exe 3308 rundll32.exe 3308 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 4676 wrote to memory of 3256 4676 file.exe gntuud.exe PID 4676 wrote to memory of 3256 4676 file.exe gntuud.exe PID 4676 wrote to memory of 3256 4676 file.exe gntuud.exe PID 3256 wrote to memory of 4240 3256 gntuud.exe schtasks.exe PID 3256 wrote to memory of 4240 3256 gntuud.exe schtasks.exe PID 3256 wrote to memory of 4240 3256 gntuud.exe schtasks.exe PID 3256 wrote to memory of 3308 3256 gntuud.exe rundll32.exe PID 3256 wrote to memory of 3308 3256 gntuud.exe rundll32.exe PID 3256 wrote to memory of 3308 3256 gntuud.exe rundll32.exe -
outlook_win_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\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:4676 -
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:3256 -
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:4240 -
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:3308 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4676 -s 11442⤵
- Program crash
PID:328
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4676 -ip 46761⤵PID:3572
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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:4964 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 4162⤵
- Program crash
PID:2728
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4964 -ip 49641⤵PID:4284
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
MD5a6095319c7f53cc8c5865dbcc9f2eb8c
SHA1cc2af3aa3d9fabe53412efa33176b283900f1bde
SHA2567c719af6e45ccff940b1202e03e3efdde9f3dce064384c5e536ca67e3846861b
SHA51209520a2aae7d957bf4e977253e5eb08e99ed58a3063ef02dad06666f3c96e85ad7d1d64ab474abe96c771f613ddd1392ab2228501f534f93f668cb6d81756d9d
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5a6095319c7f53cc8c5865dbcc9f2eb8c
SHA1cc2af3aa3d9fabe53412efa33176b283900f1bde
SHA2567c719af6e45ccff940b1202e03e3efdde9f3dce064384c5e536ca67e3846861b
SHA51209520a2aae7d957bf4e977253e5eb08e99ed58a3063ef02dad06666f3c96e85ad7d1d64ab474abe96c771f613ddd1392ab2228501f534f93f668cb6d81756d9d
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5a6095319c7f53cc8c5865dbcc9f2eb8c
SHA1cc2af3aa3d9fabe53412efa33176b283900f1bde
SHA2567c719af6e45ccff940b1202e03e3efdde9f3dce064384c5e536ca67e3846861b
SHA51209520a2aae7d957bf4e977253e5eb08e99ed58a3063ef02dad06666f3c96e85ad7d1d64ab474abe96c771f613ddd1392ab2228501f534f93f668cb6d81756d9d
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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/3256-141-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3256-139-0x0000000000CCC000-0x0000000000CEB000-memory.dmpFilesize
124KB
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memory/3256-140-0x0000000000C70000-0x0000000000CAE000-memory.dmpFilesize
248KB
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memory/3256-136-0x0000000000000000-mapping.dmp
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memory/3256-144-0x0000000000CCC000-0x0000000000CEB000-memory.dmpFilesize
124KB
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memory/3256-145-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3308-150-0x0000000000000000-mapping.dmp
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memory/3308-154-0x0000000000F60000-0x0000000000F84000-memory.dmpFilesize
144KB
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memory/4240-143-0x0000000000000000-mapping.dmp
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memory/4676-142-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4676-149-0x0000000000BFD000-0x0000000000C1C000-memory.dmpFilesize
124KB
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memory/4676-132-0x0000000000BFD000-0x0000000000C1C000-memory.dmpFilesize
124KB
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memory/4676-135-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4676-134-0x0000000000BFD000-0x0000000000C1C000-memory.dmpFilesize
124KB
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memory/4676-133-0x0000000000B80000-0x0000000000BBE000-memory.dmpFilesize
248KB
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memory/4964-148-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4964-147-0x0000000000E20000-0x0000000000E3F000-memory.dmpFilesize
124KB