Analysis
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max time kernel
150s -
max time network
155s -
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 07:56
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20220812-en
General
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Target
file.exe
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Size
205KB
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MD5
4df955dcd23f20f6aea2bd174c44dca9
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SHA1
466b8734b8874bf880c6b451ec099cae531a1bc3
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SHA256
b61d968799d67e9061e759856e554974b644f18cba888addb3ced45462291c91
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SHA512
41015d3f8390af1463e78e2e05c38b6efdc537eebf0a9254be081badd0371dfd5a72b79d56e3590d23a067cb7500854e0efd0a496a8d50207b0549331ac19003
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SSDEEP
3072:ODa6j9gj4hm6655eHurt4cwDN974w+Yc8XuRDXSbGKWhVSo9jns5niOwRclQ:v6gchJurt43DXx+YclDvK0fs5nAJ
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 35 2860 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 3 IoCs
Processes:
gntuud.exegntuud.exegntuud.exepid process 3076 gntuud.exe 4076 gntuud.exe 3664 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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation gntuud.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 2860 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-1-5-21-2629973501-4017243118-3254762364-1000\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 948 2416 WerFault.exe file.exe 1016 4076 WerFault.exe gntuud.exe 2356 3664 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 2860 rundll32.exe 2860 rundll32.exe 2860 rundll32.exe 2860 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 2416 wrote to memory of 3076 2416 file.exe gntuud.exe PID 2416 wrote to memory of 3076 2416 file.exe gntuud.exe PID 2416 wrote to memory of 3076 2416 file.exe gntuud.exe PID 3076 wrote to memory of 4940 3076 gntuud.exe schtasks.exe PID 3076 wrote to memory of 4940 3076 gntuud.exe schtasks.exe PID 3076 wrote to memory of 4940 3076 gntuud.exe schtasks.exe PID 3076 wrote to memory of 2860 3076 gntuud.exe rundll32.exe PID 3076 wrote to memory of 2860 3076 gntuud.exe rundll32.exe PID 3076 wrote to memory of 2860 3076 gntuud.exe rundll32.exe -
outlook_win_path 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\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 2416 -s 8962⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2416 -ip 24161⤵
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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 4076 -s 4162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4076 -ip 40761⤵
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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 3664 -s 4162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3664 -ip 36641⤵
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
MD54df955dcd23f20f6aea2bd174c44dca9
SHA1466b8734b8874bf880c6b451ec099cae531a1bc3
SHA256b61d968799d67e9061e759856e554974b644f18cba888addb3ced45462291c91
SHA51241015d3f8390af1463e78e2e05c38b6efdc537eebf0a9254be081badd0371dfd5a72b79d56e3590d23a067cb7500854e0efd0a496a8d50207b0549331ac19003
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD54df955dcd23f20f6aea2bd174c44dca9
SHA1466b8734b8874bf880c6b451ec099cae531a1bc3
SHA256b61d968799d67e9061e759856e554974b644f18cba888addb3ced45462291c91
SHA51241015d3f8390af1463e78e2e05c38b6efdc537eebf0a9254be081badd0371dfd5a72b79d56e3590d23a067cb7500854e0efd0a496a8d50207b0549331ac19003
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD54df955dcd23f20f6aea2bd174c44dca9
SHA1466b8734b8874bf880c6b451ec099cae531a1bc3
SHA256b61d968799d67e9061e759856e554974b644f18cba888addb3ced45462291c91
SHA51241015d3f8390af1463e78e2e05c38b6efdc537eebf0a9254be081badd0371dfd5a72b79d56e3590d23a067cb7500854e0efd0a496a8d50207b0549331ac19003
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C:\Users\Admin\AppData\Local\Temp\3f904562a0\gntuud.exeFilesize
205KB
MD54df955dcd23f20f6aea2bd174c44dca9
SHA1466b8734b8874bf880c6b451ec099cae531a1bc3
SHA256b61d968799d67e9061e759856e554974b644f18cba888addb3ced45462291c91
SHA51241015d3f8390af1463e78e2e05c38b6efdc537eebf0a9254be081badd0371dfd5a72b79d56e3590d23a067cb7500854e0efd0a496a8d50207b0549331ac19003
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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/2416-133-0x0000000000CA0000-0x0000000000CDE000-memory.dmpFilesize
248KB
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memory/2416-134-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/2416-138-0x0000000000B6D000-0x0000000000B8C000-memory.dmpFilesize
124KB
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memory/2416-139-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/2416-132-0x0000000000B6D000-0x0000000000B8C000-memory.dmpFilesize
124KB
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memory/2860-147-0x0000000000000000-mapping.dmp
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memory/3076-143-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3076-142-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/3076-141-0x0000000000C4C000-0x0000000000C6B000-memory.dmpFilesize
124KB
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memory/3076-135-0x0000000000000000-mapping.dmp
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memory/3664-151-0x0000000000C70000-0x0000000000C8F000-memory.dmpFilesize
124KB
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memory/3664-152-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4076-145-0x0000000000C30000-0x0000000000C4F000-memory.dmpFilesize
124KB
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memory/4076-146-0x0000000000400000-0x0000000000AE5000-memory.dmpFilesize
6.9MB
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memory/4940-140-0x0000000000000000-mapping.dmp