Analysis
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max time kernel
234s -
max time network
244s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
25-11-2022 23:57
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
2ff41f0db8c2dd807a5361add8f4de43
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SHA1
3db2eb3d9f763a690cf940bcbe9124e95ddd8ee1
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SHA256
294b8b4d6e8185e3365b83552186ff8248ffdcfb9c3325d3efbcb7f0cb4f92cd
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SHA512
049899d276c8f6829f257f6994bf6e1a2dcea8e9538791e2081de6e291df6eaf011849384c688ce215402e495b9f64184d9bcfd430ca3da60c58e604f0dd49c4
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SSDEEP
3072:mMrM2SdIiuD5UN+fioDqlUte33ezSN2jlLsJOAbeN4FbABaEIodcl:dSdIsN+fioDq2EHisjJ5icABH
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 4736 rundll32.exe -
Downloads MZ/PE file
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Executes dropped EXE 3 IoCs
Processes:
gntuud.exegntuud.exegntuud.exepid process 4840 gntuud.exe 3972 gntuud.exe 8 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 4736 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 2040 4912 WerFault.exe file.exe 3688 3972 WerFault.exe gntuud.exe 2032 8 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 4736 rundll32.exe 4736 rundll32.exe 4736 rundll32.exe 4736 rundll32.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
file.exegntuud.exedescription pid process target process PID 4912 wrote to memory of 4840 4912 file.exe gntuud.exe PID 4912 wrote to memory of 4840 4912 file.exe gntuud.exe PID 4912 wrote to memory of 4840 4912 file.exe gntuud.exe PID 4840 wrote to memory of 3600 4840 gntuud.exe schtasks.exe PID 4840 wrote to memory of 3600 4840 gntuud.exe schtasks.exe PID 4840 wrote to memory of 3600 4840 gntuud.exe schtasks.exe PID 4840 wrote to memory of 4736 4840 gntuud.exe rundll32.exe PID 4840 wrote to memory of 4736 4840 gntuud.exe rundll32.exe PID 4840 wrote to memory of 4736 4840 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
PID:4912 -
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:4840 -
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:3600 -
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:4736 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4912 -s 12842⤵
- Program crash
PID:2040
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4912 -ip 49121⤵PID:1396
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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:3972 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3972 -s 4162⤵
- Program crash
PID:3688
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3972 -ip 39721⤵PID:3652
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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:8 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 8 -s 4162⤵
- Program crash
PID:2032
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 8 -ip 81⤵PID:4548
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
205KB
MD52ff41f0db8c2dd807a5361add8f4de43
SHA13db2eb3d9f763a690cf940bcbe9124e95ddd8ee1
SHA256294b8b4d6e8185e3365b83552186ff8248ffdcfb9c3325d3efbcb7f0cb4f92cd
SHA512049899d276c8f6829f257f6994bf6e1a2dcea8e9538791e2081de6e291df6eaf011849384c688ce215402e495b9f64184d9bcfd430ca3da60c58e604f0dd49c4
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Filesize
205KB
MD52ff41f0db8c2dd807a5361add8f4de43
SHA13db2eb3d9f763a690cf940bcbe9124e95ddd8ee1
SHA256294b8b4d6e8185e3365b83552186ff8248ffdcfb9c3325d3efbcb7f0cb4f92cd
SHA512049899d276c8f6829f257f6994bf6e1a2dcea8e9538791e2081de6e291df6eaf011849384c688ce215402e495b9f64184d9bcfd430ca3da60c58e604f0dd49c4
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Filesize
205KB
MD52ff41f0db8c2dd807a5361add8f4de43
SHA13db2eb3d9f763a690cf940bcbe9124e95ddd8ee1
SHA256294b8b4d6e8185e3365b83552186ff8248ffdcfb9c3325d3efbcb7f0cb4f92cd
SHA512049899d276c8f6829f257f6994bf6e1a2dcea8e9538791e2081de6e291df6eaf011849384c688ce215402e495b9f64184d9bcfd430ca3da60c58e604f0dd49c4
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Filesize
205KB
MD52ff41f0db8c2dd807a5361add8f4de43
SHA13db2eb3d9f763a690cf940bcbe9124e95ddd8ee1
SHA256294b8b4d6e8185e3365b83552186ff8248ffdcfb9c3325d3efbcb7f0cb4f92cd
SHA512049899d276c8f6829f257f6994bf6e1a2dcea8e9538791e2081de6e291df6eaf011849384c688ce215402e495b9f64184d9bcfd430ca3da60c58e604f0dd49c4
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Filesize
126KB
MD5adbaf286228c46522e50371c4be31a03
SHA1a29d644c4663b2e2b2bd92046ba0df629537c297
SHA256d3e9a3365f73a34e2dd9022a318abcc2c55af98bafb2dc302cbb55f5398bb9a0
SHA51274a55cc8d8c3af54e5ba290a34b968918da994ea2d55b5f0d1f39e83cb9a39d73226227933c760b48f2e0bdb646f8243967517ef8202e02d88411d2d19ae217d
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Filesize
126KB
MD5adbaf286228c46522e50371c4be31a03
SHA1a29d644c4663b2e2b2bd92046ba0df629537c297
SHA256d3e9a3365f73a34e2dd9022a318abcc2c55af98bafb2dc302cbb55f5398bb9a0
SHA51274a55cc8d8c3af54e5ba290a34b968918da994ea2d55b5f0d1f39e83cb9a39d73226227933c760b48f2e0bdb646f8243967517ef8202e02d88411d2d19ae217d