Analysis
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max time kernel
543s -
max time network
593s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
13-03-2021 14:11
Behavioral task
behavioral1
Sample
2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025.xls
Resource
win10v20201028
General
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Target
2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025.xls
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Size
277KB
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MD5
1948bc3b2bf65c03c43a8ce5cac48dcf
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SHA1
51b3a92fae730691ebe98542a328446c703aa74a
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SHA256
2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025
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SHA512
566157b6bc604c0076340c62c58d2f1591520e81fa3d41b952b44b5ecf9a104895414bc3407310ab740f2537d3d70ab0840a5010f0f5eb9af0c7bf46a8f61ddf
Malware Config
Signatures
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Process spawned unexpected child process 5 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exerundll32.exerundll32.exerundll32.exerundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5100 3888 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4152 3888 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4296 3888 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4348 3888 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4372 3888 rundll32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
firefox.exeEXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz firefox.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier firefox.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 firefox.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature firefox.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision firefox.exe -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Modifies registry class 1 IoCs
Processes:
firefox.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings firefox.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3888 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
firefox.exedescription pid process Token: SeDebugPrivilege 2592 firefox.exe Token: SeDebugPrivilege 2592 firefox.exe Token: SeDebugPrivilege 2592 firefox.exe Token: SeDebugPrivilege 2592 firefox.exe Token: SeDebugPrivilege 2592 firefox.exe -
Suspicious use of FindShellTrayWindow 6 IoCs
Processes:
EXCEL.EXEfirefox.exepid process 3888 EXCEL.EXE 2592 firefox.exe 2592 firefox.exe 2592 firefox.exe 2592 firefox.exe 3888 EXCEL.EXE -
Suspicious use of SendNotifyMessage 3 IoCs
Processes:
firefox.exepid process 2592 firefox.exe 2592 firefox.exe 2592 firefox.exe -
Suspicious use of SetWindowsHookEx 16 IoCs
Processes:
EXCEL.EXEfirefox.exepid process 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 2592 firefox.exe 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE 3888 EXCEL.EXE -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
firefox.exefirefox.exedescription pid process target process PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 3168 wrote to memory of 2592 3168 firefox.exe firefox.exe PID 2592 wrote to memory of 3868 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 3868 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 1352 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe PID 2592 wrote to memory of 4240 2592 firefox.exe firefox.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:3888 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:5100 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok1,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:4152 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok2,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:4296 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok3,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:4348 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok4,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:4372
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3168 -
C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe"2⤵
- Checks processor information in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2592 -
C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2592.0.1821002622\1247761836" -parentBuildID 20200403170909 -prefsHandle 1484 -prefMapHandle 1480 -prefsLen 1 -prefMapSize 219511 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2592 "\\.\pipe\gecko-crash-server-pipe.2592" 1628 gpu3⤵PID:3868
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2592.3.1492673873\1170175810" -childID 1 -isForBrowser -prefsHandle 2240 -prefMapHandle 2236 -prefsLen 156 -prefMapSize 219511 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2592 "\\.\pipe\gecko-crash-server-pipe.2592" 2252 tab3⤵PID:1352
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2592.13.1055144887\1700694541" -childID 2 -isForBrowser -prefsHandle 3428 -prefMapHandle 3424 -prefsLen 7013 -prefMapSize 219511 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2592 "\\.\pipe\gecko-crash-server-pipe.2592" 3416 tab3⤵PID:4240
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2592.20.1879478514\894929695" -childID 3 -isForBrowser -prefsHandle 4304 -prefMapHandle 4248 -prefsLen 7969 -prefMapSize 219511 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 2592 "\\.\pipe\gecko-crash-server-pipe.2592" 4668 tab3⤵PID:4676
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1352-9-0x0000000000000000-mapping.dmp
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memory/2592-7-0x0000000000000000-mapping.dmp
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memory/3868-8-0x0000000000000000-mapping.dmp
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memory/3888-5-0x00007FFF6CC80000-0x00007FFF6D2B7000-memory.dmpFilesize
6.2MB
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memory/3888-6-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-2-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-4-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/3888-3-0x00007FFF49320000-0x00007FFF49330000-memory.dmpFilesize
64KB
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memory/4152-13-0x0000000000000000-mapping.dmp
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memory/4240-10-0x0000000000000000-mapping.dmp
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memory/4296-14-0x0000000000000000-mapping.dmp
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memory/4348-15-0x0000000000000000-mapping.dmp
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memory/4372-16-0x0000000000000000-mapping.dmp
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memory/4676-11-0x0000000000000000-mapping.dmp
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memory/5100-12-0x0000000000000000-mapping.dmp