Analysis
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max time kernel
139s -
max time network
122s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
15-03-2021 16:33
Behavioral task
behavioral1
Sample
sample20210315-01.xlsm
Resource
win7v20201028
General
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Target
sample20210315-01.xlsm
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Size
40KB
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MD5
1573b4ec83ac67af060289a37896b0c9
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SHA1
b95d31d6b268f4382c438ba8cdb2d6fae9e23572
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SHA256
fd2cc0c858b7b92b32d86f7bb8a48d56798667a2bc7e75fe44f074178ea3a0d6
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SHA512
925e02a2f062cf4732335b28765779973d6db9d89c52016326aef577b0e76ee07bb8beb386545f9551aa2e4c811f6d432c9dda90cfedc6e0ed72f042808fd3b9
Malware Config
Extracted
dridex
10444
210.65.244.184:443
147.78.186.4:10051
62.75.168.152:6601
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4088 1048 regsvr32.exe EXCEL.EXE -
Processes:
resource yara_rule behavioral2/memory/3280-11-0x0000000073740000-0x000000007377D000-memory.dmp dridex_ldr behavioral2/memory/3280-12-0x0000000073740000-0x000000007377D000-memory.dmp dridex_ldr -
Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 3280 regsvr32.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process 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 -
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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1048 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE 1048 EXCEL.EXE -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
EXCEL.EXEregsvr32.exedescription pid process target process PID 1048 wrote to memory of 4088 1048 EXCEL.EXE regsvr32.exe PID 1048 wrote to memory of 4088 1048 EXCEL.EXE regsvr32.exe PID 4088 wrote to memory of 3280 4088 regsvr32.exe regsvr32.exe PID 4088 wrote to memory of 3280 4088 regsvr32.exe regsvr32.exe PID 4088 wrote to memory of 3280 4088 regsvr32.exe regsvr32.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\sample20210315-01.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\regsvr32.exe"C:\Windows\System32\regsvr32.exe" -s C:\Users\Admin\AppData\Local\Temp\ehzhdqib.dll2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe-s C:\Users\Admin\AppData\Local\Temp\ehzhdqib.dll3⤵
- Loads dropped DLL
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\ehzhdqib.dllMD5
3a12ffdef09632cf4ce2c98dd6799f5f
SHA1e6111b814f0b4d2eefec5dee25f23b060097b56b
SHA256a06b2dd730dbd255594c2c231e18559bf25953967580cb0f96c29e37cc4a9117
SHA512dd869b9765a633f8f63a319a5dd35212219042ac293b3dd63eda8515df6681fb097928bf94d3a712703872c79e5b4ff056649dfd7d6efbb44893ca32dd07d4d4
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\Users\Admin\AppData\Local\Temp\ehzhdqib.dllMD5
3a12ffdef09632cf4ce2c98dd6799f5f
SHA1e6111b814f0b4d2eefec5dee25f23b060097b56b
SHA256a06b2dd730dbd255594c2c231e18559bf25953967580cb0f96c29e37cc4a9117
SHA512dd869b9765a633f8f63a319a5dd35212219042ac293b3dd63eda8515df6681fb097928bf94d3a712703872c79e5b4ff056649dfd7d6efbb44893ca32dd07d4d4
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memory/1048-2-0x00007FF920240000-0x00007FF920250000-memory.dmpFilesize
64KB
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memory/1048-3-0x00007FF920240000-0x00007FF920250000-memory.dmpFilesize
64KB
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memory/1048-4-0x00007FF920240000-0x00007FF920250000-memory.dmpFilesize
64KB
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memory/1048-5-0x00007FF920240000-0x00007FF920250000-memory.dmpFilesize
64KB
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memory/1048-6-0x00007FF943A40000-0x00007FF944077000-memory.dmpFilesize
6.2MB
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memory/3280-9-0x0000000000000000-mapping.dmp
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memory/3280-11-0x0000000073740000-0x000000007377D000-memory.dmpFilesize
244KB
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memory/3280-12-0x0000000073740000-0x000000007377D000-memory.dmpFilesize
244KB
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memory/3280-13-0x0000000004E50000-0x0000000004E51000-memory.dmpFilesize
4KB
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memory/4088-7-0x0000000000000000-mapping.dmp