Analysis
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max time kernel
90s -
max time network
96s -
platform
windows7_x64 -
resource
win7 -
submitted
02-09-2020 13:11
General
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Target
UNGO PAYMENT FORM08656049_DOC.exe
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Size
436KB
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MD5
f4d7da499d3f9f03e20a1768d069afa9
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SHA1
01b300d3161e8ee0f8399f48fa71ef9f68edfd54
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SHA256
3c28740370fb083950c3249fc5dffaad44c5a94cac502d13b46fbd6f743dc259
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SHA512
5f2857e5f410e470aebc5f4987cb92984fbbbd7da2d4dccc3aaa0ed6efd1e0d0f0ce5b03acccf45882100c2d0bdfbe209c14b5ee8c4c11b1a14ea0c70063eb17
Malware Config
Extracted
matiex
https://api.telegram.org/bot1343989244:AAGiKFYQpwhU7CTGXdVgD1pX0ZPn9uK-YpM/sendMessage?chat_id=1246371216
Signatures
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Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
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Matiex Main Payload 4 IoCs
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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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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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp1140.tmpMD5
75ccd22bd0182780009660b85bf52053
SHA12ab6584c9d3b4308cc17410731770bfaeb0ffea0
SHA25641eec4dc9004fb29ce9c1a57401517674abf940d3c1d63e5b6819a6820706b15
SHA512a79505c49acb306756b81efa30839d795da5c425d3b6636df983df8a86ca9306b4936974d3fb4b465a7f904465b437808c293f9db4813c963b08acc25eeab5fb
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memory/520-8-0x0000000000400000-0x0000000000470000-memory.dmpFilesize
448KB
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memory/520-9-0x000000000046B77E-mapping.dmp
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memory/520-10-0x0000000000400000-0x0000000000470000-memory.dmpFilesize
448KB
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memory/520-11-0x0000000000400000-0x0000000000470000-memory.dmpFilesize
448KB
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memory/520-13-0x0000000073F10000-0x00000000745FE000-memory.dmpFilesize
6.9MB
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memory/1060-6-0x0000000000000000-mapping.dmp
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memory/1124-0-0x0000000073F10000-0x00000000745FE000-memory.dmpFilesize
6.9MB
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memory/1124-1-0x0000000000940000-0x0000000000941000-memory.dmpFilesize
4KB
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memory/1124-3-0x0000000000210000-0x0000000000213000-memory.dmpFilesize
12KB
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memory/1124-4-0x0000000004300000-0x0000000004355000-memory.dmpFilesize
340KB
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memory/1124-5-0x00000000051F0000-0x0000000005281000-memory.dmpFilesize
580KB