Analysis
-
max time kernel
141s -
max time network
143s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
21-01-2021 11:34
Behavioral task
behavioral1
Sample
1 Total New Invoices-Thursday January 21 2021.xlsm
Resource
win7v20201028
General
-
Target
1 Total New Invoices-Thursday January 21 2021.xlsm
-
Size
30KB
-
MD5
d89d70ee6809ef93910bfbf10c4caf94
-
SHA1
5e8d4db8464fd6d427d5987ae6cb017ceac13839
-
SHA256
55cbb43aad59d149ba4bc06684771b5d87a3f570da165437c4d07d442d4b8db7
-
SHA512
c5eb5a46edb4cf9a7eeeb7e945665f9091d2b536310d5e4de54d47fca8690821c28c004a4677daae1273911f8e60d467cd8424f2e7e23e12f20ac589bb6d5073
Malware Config
Extracted
Extracted
dridex
10444
194.225.58.214:443
211.110.44.63:5353
69.164.207.140:3388
198.57.200.100:3786
Signatures
-
Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 2040 2028 regsvr32.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1532 2028 regsvr32.exe EXCEL.EXE -
Processes:
resource yara_rule behavioral1/memory/1532-12-0x000000006C9E0000-0x000000006CA1D000-memory.dmp dridex_ldr behavioral1/memory/1532-13-0x000000006C9E0000-0x000000006CA1D000-memory.dmp dridex_ldr -
Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 1532 regsvr32.exe -
Office loads VBA resources, possible macro or embedded object present
-
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE -
Modifies registry class 280 IoCs
Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{79176FB3-B7F2-11CE-97EF-00AA006D2776}\ = "ISpinbutton" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{5512D123-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{796775CA-754C-48CC-91A2-7C86074E92F3}\2.0\ = "Microsoft Forms 2.0 Object Library" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\TypeLib\{796775CA-754C-48CC-91A2-7C86074E92F3}\2.0\ = "Microsoft Forms 2.0 Object Library" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{9A4BBF53-4E46-101B-8BBD-00AA003E3B29} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{5B9D8FC8-4A71-101B-97A6-00000B65C08B}\ = "FormEvents" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{796775CA-754C-48CC-91A2-7C86074E92F3}\2.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Excel8.0\\MSForms.exd" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8A683C91-BA84-11CF-8110-00A0C9030074} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{47FF8FE8-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{7B020EC8-AF6C-11CE-9F46-00AA00574A4F}\ = "MultiPageEvents" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{7B020EC7-AF6C-11CE-9F46-00AA00574A4F}\ = "TabStripEvents" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{79176FB2-B7F2-11CE-97EF-00AA006D2776}\ = "SpinbuttonEvents" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{4C599243-6926-101B-9992-00000B65C6F9}\ = "IImage" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{5512D111-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLSubmitButton" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{47FF8FE3-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{04598FC9-866C-11CF-AB7C-00AA00C08FCF} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074}\ = "IReturnBoolean" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D13-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcText" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{47FF8FE0-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D52-EC42-11CE-9E0D-00AA006002F3}\ = "MdcOptionButtonEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D62-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{47FF8FE3-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{5512D123-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{7B020EC2-AF6C-11CE-9F46-00AA00574A4F} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{5512D115-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D12-EC42-11CE-9E0D-00AA006002F3}\ = "MdcTextEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{47FF8FE0-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D62-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{79176FB2-B7F2-11CE-97EF-00AA006D2776} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{5CEF5613-713D-11CE-80C9-00AA00611080} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{04598FC7-866C-11CF-AB7C-00AA00C08FCF} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D53-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcOptionButton" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{92E11A03-7358-11CE-80CB-00AA00611080}\ = "Pages" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{5512D11D-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{5512D123-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLSelect" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\TypeLib\{796775CA-754C-48CC-91A2-7C86074E92F3}\2.0\HELPDIR EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{7B020EC2-AF6C-11CE-9F46-00AA00574A4F} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{47FF8FE6-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D52-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{796775CA-754C-48CC-91A2-7C86074E92F3}\2.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Excel8.0" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D53-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D12-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{7B020EC7-AF6C-11CE-9F46-00AA00574A4F} EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{796775CA-754C-48CC-91A2-7C86074E92F3}\2.0\FLAGS\ = "6" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\TypeLib EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{9A4BBF53-4E46-101B-8BBD-00AA003E3B29}\ = "ControlEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D63-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{7B020EC1-AF6C-11CE-9F46-00AA00574A4F} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D22-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{7B020EC8-AF6C-11CE-9F46-00AA00574A4F}\ = "MultiPageEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{04598FC8-866C-11CF-AB7C-00AA00C08FCF}\ = "_UserForm" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D23-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{8BD21D43-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcCheckBox" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{47FF8FE0-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{82B02370-B5BC-11CF-810F-00A0C9030074} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D33-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcCombo" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{79176FB3-B7F2-11CE-97EF-00AA006D2776} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{8BD21D62-EC42-11CE-9E0D-00AA006002F3}\ = "MdcToggleButtonEvents" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Wow6432Node\Interface\{04598FC1-866C-11CF-AB7C-00AA00C08FCF}\ = "ILabelControl" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{04598FC4-866C-11CF-AB7C-00AA00C08FCF}\ = "ICommandButton" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000_CLASSES\Interface\{7B020EC7-AF6C-11CE-9F46-00AA00574A4F} EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2028 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 2028 EXCEL.EXE 2028 EXCEL.EXE 2028 EXCEL.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 2040 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe PID 2028 wrote to memory of 1532 2028 EXCEL.EXE regsvr32.exe
Processes
-
C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\1 Total New Invoices-Thursday January 21 2021.xlsm"1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\regsvr32.exe"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\bksuh.dll2⤵
- Process spawned unexpected child process
-
C:\Windows\SysWOW64\regsvr32.exe"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\bksuh.dll2⤵
- Process spawned unexpected child process
- Loads dropped DLL
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\bksuh.dllMD5
a01d5a105e5f7f87d6219289021d6fcd
SHA12ca71d7ba72b5ad78f7497c94e898bfc66f1788d
SHA256b1db3e9ff85ecb2f697ac7c77e2e1e3617320ff9c16567dce4f5ddc9610d3a8c
SHA5128f77d4b6a083b99ea50bae16fbd7d53cf619199e07b1b9488ce26379615d7a1fbf6a4e0b4b05600d4a1ee4338b5ccb8d5e128dd166440a606ffa3ff4dc129da5
-
\Users\Admin\AppData\Local\Temp\bksuh.dllMD5
a01d5a105e5f7f87d6219289021d6fcd
SHA12ca71d7ba72b5ad78f7497c94e898bfc66f1788d
SHA256b1db3e9ff85ecb2f697ac7c77e2e1e3617320ff9c16567dce4f5ddc9610d3a8c
SHA5128f77d4b6a083b99ea50bae16fbd7d53cf619199e07b1b9488ce26379615d7a1fbf6a4e0b4b05600d4a1ee4338b5ccb8d5e128dd166440a606ffa3ff4dc129da5
-
memory/1532-8-0x0000000000000000-mapping.dmp
-
memory/1532-12-0x000000006C9E0000-0x000000006CA1D000-memory.dmpFilesize
244KB
-
memory/1532-13-0x000000006C9E0000-0x000000006CA1D000-memory.dmpFilesize
244KB
-
memory/1532-14-0x0000000000320000-0x0000000000321000-memory.dmpFilesize
4KB
-
memory/1720-7-0x000007FEF6AD0000-0x000007FEF6D4A000-memory.dmpFilesize
2.5MB
-
memory/2028-2-0x000000002FA41000-0x000000002FA44000-memory.dmpFilesize
12KB
-
memory/2028-3-0x0000000071D11000-0x0000000071D13000-memory.dmpFilesize
8KB
-
memory/2028-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
-
memory/2040-5-0x0000000000000000-mapping.dmp
-
memory/2040-6-0x0000000075C31000-0x0000000075C33000-memory.dmpFilesize
8KB