Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
09-05-2024 08:11
Static task
static1
Behavioral task
behavioral1
Sample
1.zip
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
1.zip
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
Autoit3.exe
Resource
win7-20240215-en
Behavioral task
behavioral4
Sample
Autoit3.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral5
Sample
script.a3x
Resource
win7-20240508-en
Behavioral task
behavioral6
Sample
script.a3x
Resource
win10v2004-20240426-en
General
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Target
script.a3x
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Size
498KB
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MD5
04cdff477585cb0747ecd20052f03c2e
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SHA1
8eae88d58b300613fc506b5b7e4cbcb083c5a0a9
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SHA256
f3df02bf4d10415bfd8d33e0659c038465616e2190086a77dfbe0c73d229f68c
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SHA512
385765cd9fe12e85a906e43063e866ed3d221b65a6ba36ca4d02e9d1ec38094b68ed7830c4e9c5402485180af248a649e223269976e2ab20086d9c340ae5d7b1
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SSDEEP
6144:59Tm1YXhgkbIFW2soVLdqOnsNE/0+GQPNQTZAmTtlNcCPEXU9qIFJQgYjOWO21iO:5tm1TenOsEVGyYKCPEXUZFJij2wab0
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 9 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\a3x_auto_file\shell\Read\command rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\a3x_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\a3x_auto_file rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\a3x_auto_file\ rundll32.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.a3x rundll32.exe Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\.a3x\ = "a3x_auto_file" rundll32.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\a3x_auto_file\shell\Read rundll32.exe Key created \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000_CLASSES\a3x_auto_file\shell rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
AcroRd32.exepid process 2656 AcroRd32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
AcroRd32.exepid process 2656 AcroRd32.exe 2656 AcroRd32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
cmd.exerundll32.exedescription pid process target process PID 2488 wrote to memory of 2668 2488 cmd.exe rundll32.exe PID 2488 wrote to memory of 2668 2488 cmd.exe rundll32.exe PID 2488 wrote to memory of 2668 2488 cmd.exe rundll32.exe PID 2668 wrote to memory of 2656 2668 rundll32.exe AcroRd32.exe PID 2668 wrote to memory of 2656 2668 rundll32.exe AcroRd32.exe PID 2668 wrote to memory of 2656 2668 rundll32.exe AcroRd32.exe PID 2668 wrote to memory of 2656 2668 rundll32.exe AcroRd32.exe
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\script.a3x1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\script.a3x2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\script.a3x"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEventsFilesize
3KB
MD5fb42e55854528c2c91670902d7d177e9
SHA156abf31a0c8710286c51aea27bc3a0f3e9b67f36
SHA256a1cd710a4920e1078dff3dca81df8b5a511f3a4ebee90c2c6eebeb6ef56402b6
SHA512d77977a1695aaa2d98459e7b64094de573a5898b63d8149ed47c87affa90ab3c24ad013d87fbc23d3fbf3bcebf29c266f88a1310bbd9a14dc75fe0804baf30d7