Analysis
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max time kernel
143s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
16-02-2023 07:27
Static task
static1
Behavioral task
behavioral1
Sample
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe
Resource
win10v2004-20220812-en
General
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Target
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe
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Size
624KB
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MD5
97671a2ff8c7f29b3ad0ab1e3d91f6c8
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SHA1
379f979aabf0e5ab11eba5a7d216e56ed2d31a95
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SHA256
4a879a46f6c35cd6b690a689a2cdc0dffb2acb9fac39ce2b7a5116607bc87753
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SHA512
6260247564a51b5734ce503fee1e832cb14b6013e497e0d65e92211d0eb3c7de644375d319c4c7e88b2e7bac358d5e793ed79bc10ea14e357457f155918270a7
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SSDEEP
12288:MSx9jlYDJjaLfZASHlz2bz1q5LEKtc6qn2yLxCTtJ5gKFqJq:P72bz1q5ttu2AET6KFqJq
Malware Config
Extracted
matiex
https://api.telegram.org/bot1277090811:AAHJ1mutkv0Wr1_9949BBcb3lR-DuRKH5RU/sendMessage?chat_id=1216524090
Signatures
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Matiex Main payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/1044-149-0x0000000000400000-0x0000000000472000-memory.dmp family_matiex -
Drops startup file 2 IoCs
Processes:
Powershell.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nuey.exe Powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nuey.exe Powershell.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 38 checkip.dyndns.org 41 freegeoip.app 42 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exedescription pid process target process PID 5020 set thread context of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4648 1044 WerFault.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
Powershell.exepid process 4420 Powershell.exe 4420 Powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Powershell.exe97671a2ff8c7f29b3ad0ab1e3d91f6c8.exedescription pid process Token: SeDebugPrivilege 4420 Powershell.exe Token: SeDebugPrivilege 1044 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exedescription pid process target process PID 5020 wrote to memory of 4420 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe Powershell.exe PID 5020 wrote to memory of 4420 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe Powershell.exe PID 5020 wrote to memory of 4420 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe Powershell.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe PID 5020 wrote to memory of 1044 5020 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe -
outlook_office_path 1 IoCs
Processes:
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe -
outlook_win_path 1 IoCs
Processes:
97671a2ff8c7f29b3ad0ab1e3d91f6c8.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe"C:\Users\Admin\AppData\Local\Temp\97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe"Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nuey.exe'2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe"C:\Users\Admin\AppData\Local\Temp\97671a2ff8c7f29b3ad0ab1e3d91f6c8.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1044 -s 20203⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1044 -ip 10441⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1044-148-0x0000000000000000-mapping.dmp
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memory/1044-150-0x0000000006D20000-0x0000000006EE2000-memory.dmpFilesize
1.8MB
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memory/1044-149-0x0000000000400000-0x0000000000472000-memory.dmpFilesize
456KB
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memory/4420-144-0x0000000005A50000-0x0000000005A6E000-memory.dmpFilesize
120KB
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memory/4420-142-0x0000000005310000-0x0000000005376000-memory.dmpFilesize
408KB
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memory/4420-147-0x0000000005FB0000-0x0000000005FD2000-memory.dmpFilesize
136KB
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memory/4420-138-0x0000000000000000-mapping.dmp
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memory/4420-139-0x0000000004490000-0x00000000044C6000-memory.dmpFilesize
216KB
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memory/4420-140-0x0000000004BF0000-0x0000000005218000-memory.dmpFilesize
6.2MB
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memory/4420-141-0x0000000004BA0000-0x0000000004BC2000-memory.dmpFilesize
136KB
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memory/4420-146-0x0000000005F20000-0x0000000005F3A000-memory.dmpFilesize
104KB
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memory/4420-143-0x0000000005430000-0x0000000005496000-memory.dmpFilesize
408KB
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memory/4420-145-0x0000000006C30000-0x0000000006CC6000-memory.dmpFilesize
600KB
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memory/5020-132-0x0000000000630000-0x00000000006D2000-memory.dmpFilesize
648KB
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memory/5020-136-0x0000000005130000-0x000000000513A000-memory.dmpFilesize
40KB
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memory/5020-137-0x0000000005390000-0x00000000053E6000-memory.dmpFilesize
344KB
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memory/5020-135-0x00000000051D0000-0x0000000005262000-memory.dmpFilesize
584KB
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memory/5020-134-0x00000000056E0000-0x0000000005C84000-memory.dmpFilesize
5.6MB
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memory/5020-133-0x0000000005090000-0x000000000512C000-memory.dmpFilesize
624KB