Analysis
- max time kernel
151s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
21/02/2022, 23:29
General
- Target REVISED_.exe
- Size 579KB
- Sample220221-3gyknscffk
- SHA256 b9d37ce3380de623e8225b466fcd061db7f7828a2e39deace159e5c7f3455015
Malware Config
Extracted
-
matiex
-
Protocol
smtp
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Host
smtp.gmail.com
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Port
587
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Username
-
Password
mrruben0094
Signatures
- Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
- Matiex Main Payload 1 IoCs
- Drops startup file 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Drops file in Windows directory 6 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 9 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\REVISED_.exe"C:\Users\Admin\AppData\Local\Temp\REVISED_.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\pOwERsHeLl.exe"pOwERsHeLl.exe" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\REVISED_.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.exe'2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Users\Admin\AppData\Local\Temp\REVISED_.exe"C:\Users\Admin\AppData\Local\Temp\REVISED_.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\REVISED_.exe"C:\Users\Admin\AppData\Local\Temp\REVISED_.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2900-138-0x00000000055B0000-0x00000000055B1000-memory.dmp
memory/2900-131-0x000000007477E000-0x000000007477F000-memory.dmp
memory/2900-132-0x00000000055E0000-0x000000000567C000-memory.dmp
memory/2900-150-0x00000000059D0000-0x0000000005A62000-memory.dmp
memory/2900-130-0x0000000000BA0000-0x0000000000C36000-memory.dmp
memory/3620-144-0x0000000006170000-0x00000000061D6000-memory.dmp
memory/3620-147-0x0000000006CB0000-0x0000000006CCA000-memory.dmp
memory/3620-136-0x0000000002ED0000-0x0000000002F06000-memory.dmp
memory/3620-139-0x000000007477E000-0x000000007477F000-memory.dmp
memory/3620-140-0x00000000053A0000-0x00000000053A1000-memory.dmp
memory/3620-141-0x00000000053A2000-0x00000000053A3000-memory.dmp
memory/3620-142-0x0000000005940000-0x0000000005962000-memory.dmp
memory/3620-143-0x0000000006100000-0x0000000006166000-memory.dmp
memory/3620-149-0x0000000008020000-0x00000000085C4000-memory.dmp
memory/3620-145-0x00000000067F0000-0x000000000680E000-memory.dmp
memory/3620-146-0x00000000079D0000-0x0000000007A66000-memory.dmp
memory/3620-137-0x00000000059E0000-0x0000000006008000-memory.dmp
memory/3620-148-0x0000000006D00000-0x0000000006D22000-memory.dmp
memory/4608-135-0x0000017BCFEC0000-0x0000017BCFEC4000-memory.dmp
memory/4608-134-0x0000017BCD1A0000-0x0000017BCD1B0000-memory.dmp
memory/4608-133-0x0000017BCD140000-0x0000017BCD150000-memory.dmp
memory/5028-151-0x0000000000400000-0x0000000000472000-memory.dmp
memory/5028-153-0x000000007477E000-0x000000007477F000-memory.dmp
memory/5028-154-0x0000000005710000-0x0000000005711000-memory.dmp
memory/5028-155-0x00000000070A0000-0x00000000070AA000-memory.dmp
memory/5028-156-0x0000000007650000-0x0000000007812000-memory.dmp
memory/5028-157-0x0000000005713000-0x0000000005715000-memory.dmp