Analysis
- max time kernel
90s - max time network
96s - platform
windows7_x64 - resource
win7 - submitted
02/09/2020, 13:11
General
- Target UNGO PAYMENT FORM08656049_DOC.exe
- Size 436KB
- Sample200902-e85yz8wegj
- SHA256 3c28740370fb083950c3249fc5dffaad44c5a94cac502d13b46fbd6f743dc259
Malware Config
Extracted
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matiex
-
https://api.telegram.org/bot1343989244:AAGiKFYQpwhU7CTGXdVgD1pX0ZPn9uK-YpM/sendMessage?chat_id=1246371216
Signatures
- Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
- Matiex Main Payload 4 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- 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.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\UNGO PAYMENT FORM08656049_DOC.exe"C:\Users\Admin\AppData\Local\Temp\UNGO PAYMENT FORM08656049_DOC.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- 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\PTSVgqFWfbxB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1140.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\UNGO PAYMENT FORM08656049_DOC.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/520-8-0x0000000000400000-0x0000000000470000-memory.dmp
memory/520-10-0x0000000000400000-0x0000000000470000-memory.dmp
memory/520-11-0x0000000000400000-0x0000000000470000-memory.dmp
memory/520-13-0x0000000073F10000-0x00000000745FE000-memory.dmp
memory/1124-0-0x0000000073F10000-0x00000000745FE000-memory.dmp
memory/1124-1-0x0000000000940000-0x0000000000941000-memory.dmp
memory/1124-3-0x0000000000210000-0x0000000000213000-memory.dmp
memory/1124-4-0x0000000004300000-0x0000000004355000-memory.dmp
memory/1124-5-0x00000000051F0000-0x0000000005281000-memory.dmp