Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7v20201028 -
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
Credentials
Protocol: smtp- Host:
mail.revistaeducar.com.ar - Port:
25 - Username:
[email protected] - Password:
somchai#3774
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 4 IoCs
Processes:
resource yara_rule behavioral1/memory/680-7-0x0000000000400000-0x0000000000474000-memory.dmp family_matiex behavioral1/memory/680-8-0x000000000046E60E-mapping.dmp family_matiex behavioral1/memory/680-9-0x0000000000400000-0x0000000000474000-memory.dmp family_matiex behavioral1/memory/680-10-0x0000000000400000-0x0000000000474000-memory.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 5 checkip.dyndns.org 10 freegeoip.app 11 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
NKP210102-NIT-SC2.exedescription pid process target process PID 1188 set thread context of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
RegSvcs.exepid process 680 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegSvcs.exedescription pid process Token: SeDebugPrivilege 680 RegSvcs.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegSvcs.exepid process 680 RegSvcs.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
NKP210102-NIT-SC2.exedescription pid process target process PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 NKP210102-NIT-SC2.exe RegSvcs.exe PID 1188 wrote to memory of 680 1188 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 use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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memory/680-7-0x0000000000400000-0x0000000000474000-memory.dmpFilesize
464KB
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memory/680-8-0x000000000046E60E-mapping.dmp
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memory/680-9-0x0000000000400000-0x0000000000474000-memory.dmpFilesize
464KB
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memory/680-10-0x0000000000400000-0x0000000000474000-memory.dmpFilesize
464KB
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memory/680-11-0x00000000748C0000-0x0000000074FAE000-memory.dmpFilesize
6.9MB
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memory/1188-2-0x00000000748C0000-0x0000000074FAE000-memory.dmpFilesize
6.9MB
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memory/1188-3-0x0000000001220000-0x0000000001221000-memory.dmpFilesize
4KB
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memory/1188-5-0x00000000004A0000-0x00000000004AE000-memory.dmpFilesize
56KB
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memory/1188-6-0x00000000058D0000-0x0000000005996000-memory.dmpFilesize
792KB