Analysis
- max time kernel
136s - max time network
152s - platform
windows10_x64 - resource
win10v20210410 - submitted
22/07/2021, 19:01
General
- Target QYD Quotation 20210702.exe
- Size 1.1MB
- Sample210722-cednkm438e
- SHA256 e58284d351b21f134a31fdccd3e53f952133f671892da8a86347d7b930399f28
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.thts.vn
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Port
25
-
Username
-
Password
123luongngan1989
Extracted
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matiex
-
Protocol
smtp
-
Host
mail.thts.vn
-
Port
25
-
Username
-
Password
123luongngan1989
Signatures
- Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
- Matiex Main Payload 2 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies registry class 5 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\QYD Quotation 20210702.exe"C:\Users\Admin\AppData\Local\Temp\QYD Quotation 20210702.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DQuUJXrfqT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8581.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\QYD Quotation 20210702.exe"{path}"2⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3560-123-0x000000000ABE0000-0x000000000AC8A000-memory.dmp
memory/3560-117-0x0000000004AB0000-0x0000000004AB1000-memory.dmp
memory/3560-121-0x00000000080D0000-0x00000000080D1000-memory.dmp
memory/3560-122-0x0000000006770000-0x0000000006826000-memory.dmp
memory/3560-114-0x0000000000010000-0x0000000000011000-memory.dmp
memory/3560-119-0x0000000004A10000-0x0000000004AA2000-memory.dmp
memory/3560-118-0x0000000004C30000-0x0000000004C31000-memory.dmp
memory/3560-120-0x0000000008020000-0x0000000008022000-memory.dmp
memory/3560-116-0x0000000005060000-0x0000000005061000-memory.dmp
memory/3956-126-0x0000000000400000-0x0000000000474000-memory.dmp
memory/3956-133-0x0000000005840000-0x0000000005841000-memory.dmp
memory/3956-134-0x0000000001970000-0x0000000001971000-memory.dmp
memory/3956-136-0x0000000007200000-0x0000000007201000-memory.dmp