Analysis
-
max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29-02-2024 21:37
Behavioral task
behavioral1
Sample
af881fe77287babe7bebd52f8f92ec60.xls
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
af881fe77287babe7bebd52f8f92ec60.xls
Resource
win10v2004-20240226-en
General
-
Target
af881fe77287babe7bebd52f8f92ec60.xls
-
Size
35KB
-
MD5
af881fe77287babe7bebd52f8f92ec60
-
SHA1
64905c894f88bba3edb42c3c3e6968e0e4f85e54
-
SHA256
0fb8bd016f5115d376938593c542facb9d3af7cd21df17bbca07764ed96b5ebb
-
SHA512
f1755a63bd038688fb792b592ce5f42d9c550b233fc0a929b019a3dd78f3f758e413750f5857330fbab91e4e7e3127db0226f6c01c1c98ea087e8dae18c94720
-
SSDEEP
768:TPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJeGsuI4dVIvePERr:Lok3hbdlylKsgqopeJBWhZFGkE+cL2NV
Malware Config
Signatures
-
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
explorer.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2488 3524 explorer.exe EXCEL.EXE -
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 -
Modifies registry class 1 IoCs
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3524 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
EXCEL.EXEpid process 3524 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
EXCEL.EXEpid process 3524 EXCEL.EXE 3524 EXCEL.EXE 3524 EXCEL.EXE 3524 EXCEL.EXE 3524 EXCEL.EXE 3524 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEexplorer.exedescription pid process target process PID 3524 wrote to memory of 2488 3524 EXCEL.EXE explorer.exe PID 3524 wrote to memory of 2488 3524 EXCEL.EXE explorer.exe PID 4680 wrote to memory of 2344 4680 explorer.exe WScript.exe PID 4680 wrote to memory of 2344 4680 explorer.exe WScript.exe
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\af881fe77287babe7bebd52f8f92ec60.xls"1⤵
- 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:3524 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\Xyb1p.vbs2⤵
- Process spawned unexpected child process
PID:2488
-
C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4680 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\Xyb1p.vbs"2⤵PID:2344
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:81⤵PID:2776
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
578B
MD5c49723b7bea82ad1c6a7db1d67c1f73f
SHA1aec0ae26eb79a615924ed73f0696901f8f923249
SHA256631a1ede642ba292f653a8d409814914660bb8aa0b99feab49408f5aecbdee52
SHA5122ca819833b4bf68ef13da138d0e4ff0943a934e9ae81f421e2b1472fb10ded4b868bcab3189a0013c3fe1c33fe50b0dbc47d6a9894db11e2e4e01f793e709e8e