Analysis
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max time kernel
141s -
max time network
143s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
04-01-2021 10:05
Static task
static1
Behavioral task
behavioral1
Sample
PO# 2366.exe
Resource
win7v20201028
General
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Target
PO# 2366.exe
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Size
562KB
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MD5
87ea6faf43f55191b84e9be3da3bb730
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SHA1
5d61fdb034fe227740428dd8f025c6ef06c6d7d8
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SHA256
2026239c3cabfeae27fabc93031453a0af2bb4e18275bb0ee9d9ed467d3ae303
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SHA512
10160f0e589681e6eac32e60cbca665fc01e728d305659154e2e121b0ede7dc3c9dc7bf101fafbc158e9806a46573944dd3ced2eb07b0eafa9e53790c9bf9c14
Malware Config
Extracted
matiex
https://api.telegram.org/bot1277090811:AAHJ1mutkv0Wr1_9949BBcb3lR-DuRKH5RU/sendMessage?chat_id=1216524090
Signatures
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Matiex Main Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/1332-26-0x0000000000400000-0x0000000000472000-memory.dmp family_matiex behavioral2/memory/1332-27-0x000000000046DDDE-mapping.dmp family_matiex -
Drops startup file 2 IoCs
Processes:
Powershell.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nuey.exe Powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nuey.exe Powershell.exe -
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.
Processes:
flow ioc 12 checkip.dyndns.org 15 freegeoip.app 16 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO# 2366.exedescription pid process target process PID 4804 set thread context of 1332 4804 PO# 2366.exe PO# 2366.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
Powershell.exePO# 2366.exePO# 2366.exepid process 3192 Powershell.exe 3192 Powershell.exe 3192 Powershell.exe 4804 PO# 2366.exe 4804 PO# 2366.exe 1332 PO# 2366.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
PO# 2366.exepid process 1332 PO# 2366.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Powershell.exePO# 2366.exePO# 2366.exedescription pid process Token: SeDebugPrivilege 3192 Powershell.exe Token: SeDebugPrivilege 4804 PO# 2366.exe Token: SeDebugPrivilege 1332 PO# 2366.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
PO# 2366.exepid process 1332 PO# 2366.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
PO# 2366.exedescription pid process target process PID 4804 wrote to memory of 3192 4804 PO# 2366.exe Powershell.exe PID 4804 wrote to memory of 3192 4804 PO# 2366.exe Powershell.exe PID 4804 wrote to memory of 3192 4804 PO# 2366.exe Powershell.exe PID 4804 wrote to memory of 1316 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1316 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1316 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe PID 4804 wrote to memory of 1332 4804 PO# 2366.exe PO# 2366.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO# 2366.exe"C:\Users\Admin\AppData\Local\Temp\PO# 2366.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" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\PO# 2366.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nuey.exe'2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\PO# 2366.exe"C:\Users\Admin\AppData\Local\Temp\PO# 2366.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\PO# 2366.exe"C:\Users\Admin\AppData\Local\Temp\PO# 2366.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1332-26-0x0000000000400000-0x0000000000472000-memory.dmpFilesize
456KB
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memory/1332-35-0x0000000006BF0000-0x0000000006BF1000-memory.dmpFilesize
4KB
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memory/1332-28-0x00000000739D0000-0x00000000740BE000-memory.dmpFilesize
6.9MB
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memory/1332-27-0x000000000046DDDE-mapping.dmp
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memory/3192-21-0x0000000008EC0000-0x0000000008EC1000-memory.dmpFilesize
4KB
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memory/3192-18-0x0000000007580000-0x0000000007581000-memory.dmpFilesize
4KB
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memory/3192-23-0x0000000008BD0000-0x0000000008BD1000-memory.dmpFilesize
4KB
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memory/3192-10-0x0000000000000000-mapping.dmp
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memory/3192-11-0x00000000739D0000-0x00000000740BE000-memory.dmpFilesize
6.9MB
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memory/3192-12-0x00000000066C0000-0x00000000066C1000-memory.dmpFilesize
4KB
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memory/3192-13-0x0000000006E20000-0x0000000006E21000-memory.dmpFilesize
4KB
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memory/3192-14-0x0000000006DC0000-0x0000000006DC1000-memory.dmpFilesize
4KB
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memory/3192-15-0x00000000074C0000-0x00000000074C1000-memory.dmpFilesize
4KB
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memory/3192-16-0x00000000075A0000-0x00000000075A1000-memory.dmpFilesize
4KB
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memory/3192-17-0x00000000077F0000-0x00000000077F1000-memory.dmpFilesize
4KB
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memory/3192-22-0x0000000008B60000-0x0000000008B61000-memory.dmpFilesize
4KB
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memory/3192-19-0x0000000008080000-0x0000000008081000-memory.dmpFilesize
4KB
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memory/3192-20-0x0000000007E80000-0x0000000007E81000-memory.dmpFilesize
4KB
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memory/4804-2-0x00000000739D0000-0x00000000740BE000-memory.dmpFilesize
6.9MB
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memory/4804-8-0x0000000002E20000-0x0000000002E21000-memory.dmpFilesize
4KB
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memory/4804-9-0x0000000005450000-0x0000000005451000-memory.dmpFilesize
4KB
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memory/4804-25-0x0000000007000000-0x000000000700C000-memory.dmpFilesize
48KB
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memory/4804-7-0x0000000005270000-0x0000000005271000-memory.dmpFilesize
4KB
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memory/4804-6-0x0000000005890000-0x0000000005891000-memory.dmpFilesize
4KB
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memory/4804-5-0x00000000051D0000-0x00000000051D1000-memory.dmpFilesize
4KB
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memory/4804-3-0x00000000008D0000-0x00000000008D1000-memory.dmpFilesize
4KB