Analysis
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max time kernel
136s -
max time network
110s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
12-04-2021 13:34
Static task
static1
Behavioral task
behavioral1
Sample
output.dll
Resource
win7v20210410
Behavioral task
behavioral2
Sample
output.dll
Resource
win10v20210408
General
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Target
output.dll
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Size
1.4MB
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MD5
2688406bd73347d21e7ede2a7bbfaeab
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SHA1
0df05dc29da8c921ed2db6e0ac725108ce9978e6
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SHA256
57c99a4a83e155dd9503fc578670e9dc67aa25811988648c7790f1157c9a5271
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SHA512
03fa90508f796a9cad3a6485c54bb98655469ec48f1062977d3e351147295fe79d27a2397ed50ef013d3d98b2014263bcdbd4abe3de8c04d055058f5688c9740
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 524 regsvr32.exe -
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 1 IoCs
Processes:
rundll32.exepid process 2016 rundll32.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
rundll32.exepid process 2016 rundll32.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
rundll32.exerundll32.exeexplorer.exetaskeng.exeregsvr32.exedescription pid process target process PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 1756 wrote to memory of 2016 1756 rundll32.exe rundll32.exe PID 2016 wrote to memory of 1252 2016 rundll32.exe explorer.exe PID 2016 wrote to memory of 1252 2016 rundll32.exe explorer.exe PID 2016 wrote to memory of 1252 2016 rundll32.exe explorer.exe PID 2016 wrote to memory of 1252 2016 rundll32.exe explorer.exe PID 2016 wrote to memory of 1252 2016 rundll32.exe explorer.exe PID 2016 wrote to memory of 1252 2016 rundll32.exe explorer.exe PID 1252 wrote to memory of 1728 1252 explorer.exe schtasks.exe PID 1252 wrote to memory of 1728 1252 explorer.exe schtasks.exe PID 1252 wrote to memory of 1728 1252 explorer.exe schtasks.exe PID 1252 wrote to memory of 1728 1252 explorer.exe schtasks.exe PID 1640 wrote to memory of 812 1640 taskeng.exe regsvr32.exe PID 1640 wrote to memory of 812 1640 taskeng.exe regsvr32.exe PID 1640 wrote to memory of 812 1640 taskeng.exe regsvr32.exe PID 1640 wrote to memory of 812 1640 taskeng.exe regsvr32.exe PID 1640 wrote to memory of 812 1640 taskeng.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe PID 812 wrote to memory of 524 812 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\output.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\output.dll,#12⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn xmanrdzk /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\output.dll\"" /SC ONCE /Z /ST 13:33 /ET 13:454⤵
- Creates scheduled task(s)
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C:\Windows\system32\taskeng.exetaskeng.exe {9AC55159-D050-432B-97BE-B1C5AFE40BC7} S-1-5-18:NT AUTHORITY\System:Service:1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\regsvr32.exeregsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\output.dll"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe-s "C:\Users\Admin\AppData\Local\Temp\output.dll"3⤵
- Loads dropped DLL
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\output.dllMD5
14908a1fba48ac489419eea59b65e40e
SHA1d7277da5d59c0a42f6dd3955113436e86737c8c6
SHA2562b177a4abeaf654b349acb1f9c3396c809b0014608963fcc4cd1ba78d6870883
SHA512f54fbf5d976922a6a45531a764e6a9baf48e4ea9bcb05f1ac8070779a5b39bb228102bfe276d28a8da266344a33134448178226799f7dbc20792707a0161e468
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\Users\Admin\AppData\Local\Temp\output.dllMD5
14908a1fba48ac489419eea59b65e40e
SHA1d7277da5d59c0a42f6dd3955113436e86737c8c6
SHA2562b177a4abeaf654b349acb1f9c3396c809b0014608963fcc4cd1ba78d6870883
SHA512f54fbf5d976922a6a45531a764e6a9baf48e4ea9bcb05f1ac8070779a5b39bb228102bfe276d28a8da266344a33134448178226799f7dbc20792707a0161e468
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memory/524-74-0x0000000000000000-mapping.dmp
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memory/812-72-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmpFilesize
8KB
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memory/812-71-0x0000000000000000-mapping.dmp
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memory/1252-69-0x0000000000390000-0x00000000003A9000-memory.dmpFilesize
100KB
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memory/1252-66-0x0000000000000000-mapping.dmp
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memory/1252-68-0x0000000074921000-0x0000000074923000-memory.dmpFilesize
8KB
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memory/1728-70-0x0000000000000000-mapping.dmp
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memory/2016-60-0x0000000000000000-mapping.dmp
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memory/2016-65-0x0000000000980000-0x0000000000999000-memory.dmpFilesize
100KB
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memory/2016-64-0x00000000001F0000-0x000000000021D000-memory.dmpFilesize
180KB
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memory/2016-63-0x00000000000F0000-0x00000000000F1000-memory.dmpFilesize
4KB
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memory/2016-62-0x00000000007A0000-0x000000000090C000-memory.dmpFilesize
1.4MB
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memory/2016-61-0x0000000075FE1000-0x0000000075FE3000-memory.dmpFilesize
8KB