Analysis
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max time kernel
171s -
max time network
197s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
27-11-2022 05:36
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-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
f0b294310aae3da9a97c26b41fd09dbd
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SHA1
8950853e013955af570d14dc5c845b6f56216e03
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SHA256
dc58ff5f9aa00680d2db6590179ef74921fd67566d3b1cc03f1f4259713b0c52
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SHA512
3082589bb1dfec91df2f9c9869f52888bb9f9d2537c00afb9b7d6dc6ca2a206dd4608c7a5b0dd0b3b5ec94d2a9887d36970fdef91a182d0965e8d61fe81f9a1e
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SSDEEP
3072:fGsahjH1YPuUGB593dgDCLhn/9NvfM3cf1Rdkgfk9R6VBKDI/D5E2P5EOF:OlmmU43dL9NvkMrd0QBNq2Pb
Malware Config
Extracted
amadey
3.50
31.41.244.17/hfk3vK9/index.php
Signatures
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Detect Amadey credential stealer module 2 IoCs
Processes:
resource yara_rule 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 82 2376 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 3 IoCs
Processes:
gntuud.exegntuud.exegntuud.exepid process 4908 gntuud.exe 1816 gntuud.exe 3220 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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation gntuud.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2376 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-1-5-21-2386679933-1492765628-3466841596-1000\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 3648 1380 WerFault.exe file.exe 1988 1816 WerFault.exe gntuud.exe 2720 3220 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 2376 rundll32.exe 2376 rundll32.exe 2376 rundll32.exe 2376 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 1380 wrote to memory of 4908 1380 file.exe gntuud.exe PID 1380 wrote to memory of 4908 1380 file.exe gntuud.exe PID 1380 wrote to memory of 4908 1380 file.exe gntuud.exe PID 4908 wrote to memory of 3592 4908 gntuud.exe schtasks.exe PID 4908 wrote to memory of 3592 4908 gntuud.exe schtasks.exe PID 4908 wrote to memory of 3592 4908 gntuud.exe schtasks.exe PID 4908 wrote to memory of 2376 4908 gntuud.exe rundll32.exe PID 4908 wrote to memory of 2376 4908 gntuud.exe rundll32.exe PID 4908 wrote to memory of 2376 4908 gntuud.exe rundll32.exe -
outlook_win_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\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 1380 -s 9042⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1380 -ip 13801⤵
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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 1816 -s 4202⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1816 -ip 18161⤵
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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 3220 -s 4202⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3220 -ip 32201⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5f0b294310aae3da9a97c26b41fd09dbd
SHA18950853e013955af570d14dc5c845b6f56216e03
SHA256dc58ff5f9aa00680d2db6590179ef74921fd67566d3b1cc03f1f4259713b0c52
SHA5123082589bb1dfec91df2f9c9869f52888bb9f9d2537c00afb9b7d6dc6ca2a206dd4608c7a5b0dd0b3b5ec94d2a9887d36970fdef91a182d0965e8d61fe81f9a1e
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5f0b294310aae3da9a97c26b41fd09dbd
SHA18950853e013955af570d14dc5c845b6f56216e03
SHA256dc58ff5f9aa00680d2db6590179ef74921fd67566d3b1cc03f1f4259713b0c52
SHA5123082589bb1dfec91df2f9c9869f52888bb9f9d2537c00afb9b7d6dc6ca2a206dd4608c7a5b0dd0b3b5ec94d2a9887d36970fdef91a182d0965e8d61fe81f9a1e
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5f0b294310aae3da9a97c26b41fd09dbd
SHA18950853e013955af570d14dc5c845b6f56216e03
SHA256dc58ff5f9aa00680d2db6590179ef74921fd67566d3b1cc03f1f4259713b0c52
SHA5123082589bb1dfec91df2f9c9869f52888bb9f9d2537c00afb9b7d6dc6ca2a206dd4608c7a5b0dd0b3b5ec94d2a9887d36970fdef91a182d0965e8d61fe81f9a1e
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD5f0b294310aae3da9a97c26b41fd09dbd
SHA18950853e013955af570d14dc5c845b6f56216e03
SHA256dc58ff5f9aa00680d2db6590179ef74921fd67566d3b1cc03f1f4259713b0c52
SHA5123082589bb1dfec91df2f9c9869f52888bb9f9d2537c00afb9b7d6dc6ca2a206dd4608c7a5b0dd0b3b5ec94d2a9887d36970fdef91a182d0965e8d61fe81f9a1e
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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/1380-140-0x00000000007CD000-0x00000000007EC000-memory.dmpFilesize
124KB
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memory/1380-141-0x0000000000400000-0x0000000000469000-memory.dmpFilesize
420KB
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memory/1380-132-0x00000000007CD000-0x00000000007EC000-memory.dmpFilesize
124KB
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memory/1380-134-0x0000000000400000-0x0000000000469000-memory.dmpFilesize
420KB
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memory/1380-133-0x00000000005F0000-0x000000000062E000-memory.dmpFilesize
248KB
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memory/1816-144-0x0000000000760000-0x000000000077F000-memory.dmpFilesize
124KB
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memory/1816-145-0x0000000000400000-0x0000000000469000-memory.dmpFilesize
420KB
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memory/2376-146-0x0000000000000000-mapping.dmp
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memory/3220-150-0x000000000063F000-0x000000000065E000-memory.dmpFilesize
124KB
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memory/3220-151-0x0000000000400000-0x0000000000469000-memory.dmpFilesize
420KB
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memory/3592-142-0x0000000000000000-mapping.dmp
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memory/4908-139-0x0000000000400000-0x0000000000469000-memory.dmpFilesize
420KB
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memory/4908-138-0x000000000053C000-0x000000000055B000-memory.dmpFilesize
124KB
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memory/4908-135-0x0000000000000000-mapping.dmp