Analysis
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max time kernel
180s -
max time network
191s -
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 08:11
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-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
e3cd29457749bbcd912dbc06ff4e96e8
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SHA1
10cda0f6139e72854a4c2cdef53e6ee8eccf7b83
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SHA256
5f22145a6c9eaf18ed703c43b3b8f03b1db4dab9218e06ecbf3d82ae9f9e4d10
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SHA512
5110f1f48c61ec1b188c1a665fe840ab589b660590192e77d0f2c2022eb8acb3766217585fb9f8050d6fc1652752472c78daf60c67f9ae4343b9cd226d6effed
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SSDEEP
3072:cpJD+C3LqEQFnHal65mOoZq72/KXxbMvCceciAOnEaa/bJH9DGYKPv/X9HU9bKtN:IT3LqEQVA/Q6+x7cecijH67abWa7
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/3696-151-0x0000000000AC0000-0x0000000000AE4000-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 46 3696 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 3 IoCs
Processes:
gntuud.exegntuud.exegntuud.exepid process 1528 gntuud.exe 2348 gntuud.exe 4752 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 3696 rundll32.exe 3696 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 3 IoCs
Processes:
WerFault.exeWerFault.exeWerFault.exepid pid_target process target process 3164 844 WerFault.exe file.exe 4032 2348 WerFault.exe gntuud.exe 3424 4752 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 3696 rundll32.exe 3696 rundll32.exe 3696 rundll32.exe 3696 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 844 wrote to memory of 1528 844 file.exe gntuud.exe PID 844 wrote to memory of 1528 844 file.exe gntuud.exe PID 844 wrote to memory of 1528 844 file.exe gntuud.exe PID 1528 wrote to memory of 3816 1528 gntuud.exe schtasks.exe PID 1528 wrote to memory of 3816 1528 gntuud.exe schtasks.exe PID 1528 wrote to memory of 3816 1528 gntuud.exe schtasks.exe PID 1528 wrote to memory of 3696 1528 gntuud.exe rundll32.exe PID 1528 wrote to memory of 3696 1528 gntuud.exe rundll32.exe PID 1528 wrote to memory of 3696 1528 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
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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
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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)
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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
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 844 -s 12522⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 844 -ip 8441⤵
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeC:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2348 -s 4162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2348 -ip 23481⤵
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeC:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 4162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4752 -ip 47521⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5e3cd29457749bbcd912dbc06ff4e96e8
SHA110cda0f6139e72854a4c2cdef53e6ee8eccf7b83
SHA2565f22145a6c9eaf18ed703c43b3b8f03b1db4dab9218e06ecbf3d82ae9f9e4d10
SHA5125110f1f48c61ec1b188c1a665fe840ab589b660590192e77d0f2c2022eb8acb3766217585fb9f8050d6fc1652752472c78daf60c67f9ae4343b9cd226d6effed
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5e3cd29457749bbcd912dbc06ff4e96e8
SHA110cda0f6139e72854a4c2cdef53e6ee8eccf7b83
SHA2565f22145a6c9eaf18ed703c43b3b8f03b1db4dab9218e06ecbf3d82ae9f9e4d10
SHA5125110f1f48c61ec1b188c1a665fe840ab589b660590192e77d0f2c2022eb8acb3766217585fb9f8050d6fc1652752472c78daf60c67f9ae4343b9cd226d6effed
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5e3cd29457749bbcd912dbc06ff4e96e8
SHA110cda0f6139e72854a4c2cdef53e6ee8eccf7b83
SHA2565f22145a6c9eaf18ed703c43b3b8f03b1db4dab9218e06ecbf3d82ae9f9e4d10
SHA5125110f1f48c61ec1b188c1a665fe840ab589b660590192e77d0f2c2022eb8acb3766217585fb9f8050d6fc1652752472c78daf60c67f9ae4343b9cd226d6effed
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5e3cd29457749bbcd912dbc06ff4e96e8
SHA110cda0f6139e72854a4c2cdef53e6ee8eccf7b83
SHA2565f22145a6c9eaf18ed703c43b3b8f03b1db4dab9218e06ecbf3d82ae9f9e4d10
SHA5125110f1f48c61ec1b188c1a665fe840ab589b660590192e77d0f2c2022eb8acb3766217585fb9f8050d6fc1652752472c78daf60c67f9ae4343b9cd226d6effed
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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/844-141-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/844-140-0x0000000000E1D000-0x0000000000E3C000-memory.dmpFilesize
124KB
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memory/844-132-0x0000000000E1D000-0x0000000000E3C000-memory.dmpFilesize
124KB
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memory/844-133-0x0000000000DB0000-0x0000000000DEE000-memory.dmpFilesize
248KB
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memory/844-134-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/1528-135-0x0000000000000000-mapping.dmp
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memory/1528-139-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/1528-143-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/1528-138-0x0000000000DAC000-0x0000000000DCB000-memory.dmpFilesize
124KB
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memory/2348-145-0x0000000000BB0000-0x0000000000BCF000-memory.dmpFilesize
124KB
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memory/2348-146-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3696-147-0x0000000000000000-mapping.dmp
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memory/3696-151-0x0000000000AC0000-0x0000000000AE4000-memory.dmpFilesize
144KB
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memory/3816-142-0x0000000000000000-mapping.dmp
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memory/4752-153-0x0000000000BA0000-0x0000000000BBF000-memory.dmpFilesize
124KB
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memory/4752-154-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB