Analysis
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max time kernel
140s -
max time network
141s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
12-01-2021 18:06
Static task
static1
Behavioral task
behavioral1
Sample
NKP210102-NIT-SC2.exe
Resource
win7v20201028
0 signatures
0 seconds
General
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Target
NKP210102-NIT-SC2.exe
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Size
897KB
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MD5
65b5174a50b047604c2aed66369a4a88
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SHA1
853e75392f379c6d9f655c53c881c45287ab2f6b
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SHA256
8d8c5013933443f1f3e20db22a1abd56815cdd61b866f7953e032678f5e3d049
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SHA512
04e5a3e89538fc8a7b83773f52a9424da327f7fc2709e2f64f977056078e9bee87fc9ebd29619607a63b8844d084f093aa8da7d223eb97154bdb8137312b0d0e
Malware Config
Extracted
Family
matiex
Credentials
Protocol: smtp- Host:
mail.revistaeducar.com.ar - Port:
25 - Username:
[email protected] - Password:
somchai#3774
Signatures
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Matiex Main Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/516-11-0x0000000000400000-0x0000000000474000-memory.dmp family_matiex behavioral2/memory/516-12-0x000000000046E60E-mapping.dmp family_matiex -
Drops startup file 1 IoCs
Processes:
RegSvcs.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.url RegSvcs.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.
Processes:
flow ioc 19 freegeoip.app 15 checkip.dyndns.org 18 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
NKP210102-NIT-SC2.exedescription pid process target process PID 4768 set thread context of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
RegSvcs.exepid process 516 RegSvcs.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
RegSvcs.exepid process 516 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegSvcs.exedescription pid process Token: SeDebugPrivilege 516 RegSvcs.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegSvcs.exepid process 516 RegSvcs.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
NKP210102-NIT-SC2.exedescription pid process target process PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe PID 4768 wrote to memory of 516 4768 NKP210102-NIT-SC2.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\NKP210102-NIT-SC2.exe"C:\Users\Admin\AppData\Local\Temp\NKP210102-NIT-SC2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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memory/516-11-0x0000000000400000-0x0000000000474000-memory.dmpFilesize
464KB
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memory/516-20-0x0000000006EC0000-0x0000000006EC1000-memory.dmpFilesize
4KB
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memory/516-18-0x0000000005440000-0x0000000005441000-memory.dmpFilesize
4KB
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memory/516-13-0x0000000073360000-0x0000000073A4E000-memory.dmpFilesize
6.9MB
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memory/516-12-0x000000000046E60E-mapping.dmp
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memory/4768-6-0x00000000058B0000-0x00000000058B1000-memory.dmpFilesize
4KB
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memory/4768-9-0x0000000007E30000-0x0000000007EF6000-memory.dmpFilesize
792KB
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memory/4768-10-0x0000000007FB0000-0x0000000007FB1000-memory.dmpFilesize
4KB
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memory/4768-8-0x0000000005CB0000-0x0000000005CBE000-memory.dmpFilesize
56KB
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memory/4768-7-0x0000000005860000-0x0000000005861000-memory.dmpFilesize
4KB
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memory/4768-2-0x0000000073360000-0x0000000073A4E000-memory.dmpFilesize
6.9MB
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memory/4768-5-0x0000000005D10000-0x0000000005D11000-memory.dmpFilesize
4KB
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memory/4768-3-0x0000000000F20000-0x0000000000F21000-memory.dmpFilesize
4KB