Analysis
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max time kernel
140s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 02:27
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
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Target
file.exe
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Size
206KB
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MD5
633fab4f44befda65c9300b66f93c488
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SHA1
44de5da56f123e12995d34db76be6c1e0b3027c0
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SHA256
45c97782c15c48a02539b4c6f5875fc8f5a6af5b32629f549e28a060032efa32
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SHA512
434525b849fc81fb1ede979cc6ad2d570d72fd9fab151c598af97bda4e8ba5a9ffa86bc171ca336d21cdfb0bc8697ab48a7ce784e76596425a8fcba336737d46
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SSDEEP
6144:lMyTs2MIR2bLTfuySri1AYCuyhi+BdQkOe:lMyTs2l2bGrxGH+A
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 67 1440 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 3 IoCs
Processes:
gntuud.exegntuud.exegntuud.exepid process 5032 gntuud.exe 2856 gntuud.exe 3368 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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation gntuud.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 1440 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-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook rundll32.exe -
Drops file in System32 directory 2 IoCs
Processes:
svchost.exedescription ioc process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{62810538-3EB8-4410-B2CC-8DB09C8486CB}.catalogItem svchost.exe File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{8ABCF930-B272-4A4D-BA09-72AAD1AD8D23}.catalogItem svchost.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 4672 1544 WerFault.exe file.exe 1804 2856 WerFault.exe gntuud.exe 5036 3368 WerFault.exe gntuud.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
svchost.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString svchost.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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Enumerates system info in registry 2 TTPs 2 IoCs
Processes:
svchost.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU svchost.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
rundll32.exepid process 1440 rundll32.exe 1440 rundll32.exe 1440 rundll32.exe 1440 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 1544 wrote to memory of 5032 1544 file.exe gntuud.exe PID 1544 wrote to memory of 5032 1544 file.exe gntuud.exe PID 1544 wrote to memory of 5032 1544 file.exe gntuud.exe PID 5032 wrote to memory of 4184 5032 gntuud.exe schtasks.exe PID 5032 wrote to memory of 4184 5032 gntuud.exe schtasks.exe PID 5032 wrote to memory of 4184 5032 gntuud.exe schtasks.exe PID 5032 wrote to memory of 1440 5032 gntuud.exe rundll32.exe PID 5032 wrote to memory of 1440 5032 gntuud.exe rundll32.exe PID 5032 wrote to memory of 1440 5032 gntuud.exe rundll32.exe -
outlook_win_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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 1544 -s 9162⤵
- Program crash
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1544 -ip 15441⤵
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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 2856 -s 4162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 2856 -ip 28561⤵
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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 3368 -s 4162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3368 -ip 33681⤵
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
206KB
MD5633fab4f44befda65c9300b66f93c488
SHA144de5da56f123e12995d34db76be6c1e0b3027c0
SHA25645c97782c15c48a02539b4c6f5875fc8f5a6af5b32629f549e28a060032efa32
SHA512434525b849fc81fb1ede979cc6ad2d570d72fd9fab151c598af97bda4e8ba5a9ffa86bc171ca336d21cdfb0bc8697ab48a7ce784e76596425a8fcba336737d46
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
206KB
MD5633fab4f44befda65c9300b66f93c488
SHA144de5da56f123e12995d34db76be6c1e0b3027c0
SHA25645c97782c15c48a02539b4c6f5875fc8f5a6af5b32629f549e28a060032efa32
SHA512434525b849fc81fb1ede979cc6ad2d570d72fd9fab151c598af97bda4e8ba5a9ffa86bc171ca336d21cdfb0bc8697ab48a7ce784e76596425a8fcba336737d46
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
206KB
MD5633fab4f44befda65c9300b66f93c488
SHA144de5da56f123e12995d34db76be6c1e0b3027c0
SHA25645c97782c15c48a02539b4c6f5875fc8f5a6af5b32629f549e28a060032efa32
SHA512434525b849fc81fb1ede979cc6ad2d570d72fd9fab151c598af97bda4e8ba5a9ffa86bc171ca336d21cdfb0bc8697ab48a7ce784e76596425a8fcba336737d46
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
206KB
MD5633fab4f44befda65c9300b66f93c488
SHA144de5da56f123e12995d34db76be6c1e0b3027c0
SHA25645c97782c15c48a02539b4c6f5875fc8f5a6af5b32629f549e28a060032efa32
SHA512434525b849fc81fb1ede979cc6ad2d570d72fd9fab151c598af97bda4e8ba5a9ffa86bc171ca336d21cdfb0bc8697ab48a7ce784e76596425a8fcba336737d46
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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/1440-149-0x0000000000000000-mapping.dmp
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memory/1544-136-0x0000000002850000-0x000000000288E000-memory.dmpFilesize
248KB
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memory/1544-135-0x0000000000B4D000-0x0000000000B6C000-memory.dmpFilesize
124KB
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memory/1544-140-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/1544-132-0x0000000000B4D000-0x0000000000B6C000-memory.dmpFilesize
124KB
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memory/1544-134-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/1544-144-0x0000000000B4D000-0x0000000000B6C000-memory.dmpFilesize
124KB
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memory/1544-133-0x0000000002850000-0x000000000288E000-memory.dmpFilesize
248KB
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memory/2856-147-0x0000000000DD0000-0x0000000000DEF000-memory.dmpFilesize
124KB
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memory/2856-148-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3368-153-0x0000000000B90000-0x0000000000BAF000-memory.dmpFilesize
124KB
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memory/3368-154-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4184-143-0x0000000000000000-mapping.dmp
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memory/5032-146-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/5032-142-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/5032-141-0x0000000000C1C000-0x0000000000C3B000-memory.dmpFilesize
124KB
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memory/5032-137-0x0000000000000000-mapping.dmp