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Analysis
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max time kernel
144s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
20/12/2023, 16:41
Static task
static1
Behavioral task
behavioral1
Sample
eb5c3f8a581a2bbe778a586697a9b341.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
eb5c3f8a581a2bbe778a586697a9b341.exe
Resource
win10v2004-20231215-en
General
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Target
eb5c3f8a581a2bbe778a586697a9b341.exe
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Size
870KB
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MD5
eb5c3f8a581a2bbe778a586697a9b341
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SHA1
4d54306bc2410cece081f1db159665962df9a8da
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SHA256
4c65f92cd878c051338bda2ff251c8714d6b7ae2bcea06e73bc954661e993571
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SHA512
2878804b5beb838661d983dd7e4ccf48a872a512b4d6260159b3de2fd85d00149869d30a26677500b51b13af6485180441acbdba0a0c7a981c8efb07d4752fc0
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SSDEEP
12288:fhv7hZb9YMbf50NQVB2ON9sDJoyVIyeichX/7NDBV9ghPwFy2ewne0:Jtl9fR0eDRsDW/XRNw4FBXe
Malware Config
Extracted
matiex
Protocol: smtp- Host:
mail.thts.vn - Port:
25 - Username:
[email protected] - Password:
123luongngan1989 - Email To:
[email protected]
Signatures
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Matiex Main payload 1 IoCs
resource yara_rule behavioral2/memory/4384-11-0x0000000000400000-0x0000000000472000-memory.dmp family_matiex -
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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 eb5c3f8a581a2bbe778a586697a9b341.exe Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 eb5c3f8a581a2bbe778a586697a9b341.exe Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 eb5c3f8a581a2bbe778a586697a9b341.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.
flow ioc 46 checkip.dyndns.org 49 freegeoip.app 50 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1572 set thread context of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 -
Program crash 1 IoCs
pid pid_target Process procid_target 2948 4384 WerFault.exe 97 -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 1572 eb5c3f8a581a2bbe778a586697a9b341.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1572 eb5c3f8a581a2bbe778a586697a9b341.exe Token: SeDebugPrivilege 4384 eb5c3f8a581a2bbe778a586697a9b341.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 1572 wrote to memory of 1500 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 94 PID 1572 wrote to memory of 1500 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 94 PID 1572 wrote to memory of 1500 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 94 PID 1572 wrote to memory of 540 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 95 PID 1572 wrote to memory of 540 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 95 PID 1572 wrote to memory of 540 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 95 PID 1572 wrote to memory of 1984 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 96 PID 1572 wrote to memory of 1984 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 96 PID 1572 wrote to memory of 1984 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 96 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 PID 1572 wrote to memory of 4384 1572 eb5c3f8a581a2bbe778a586697a9b341.exe 97 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 eb5c3f8a581a2bbe778a586697a9b341.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 eb5c3f8a581a2bbe778a586697a9b341.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1572 -
C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"2⤵PID:1500
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C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"2⤵PID:540
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C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"2⤵PID:1984
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C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"C:\Users\Admin\AppData\Local\Temp\eb5c3f8a581a2bbe778a586697a9b341.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4384 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 16523⤵
- Program crash
PID:2948
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4384 -ip 43841⤵PID:2936
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\eb5c3f8a581a2bbe778a586697a9b341.exe.log
Filesize1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3