7d7c6953c3918487997038fa8b53e369ee2fa7a0e23731fa823f1dc3d574f784

Analysis

max time kernel
120s
max time network
127s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-05-2024 20:38

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General

Target

script.a3x
Size

498KB
MD5

04cdff477585cb0747ecd20052f03c2e
SHA1

8eae88d58b300613fc506b5b7e4cbcb083c5a0a9
SHA256

f3df02bf4d10415bfd8d33e0659c038465616e2190086a77dfbe0c73d229f68c
SHA512

385765cd9fe12e85a906e43063e866ed3d221b65a6ba36ca4d02e9d1ec38094b68ed7830c4e9c5402485180af248a649e223269976e2ab20086d9c340ae5d7b1
SSDEEP

6144:59Tm1YXhgkbIFW2soVLdqOnsNE/0+GQPNQTZAmTtlNcCPEXU9qIFJQgYjOWO21iO:5tm1TenOsEVGyYKCPEXUZFJij2wab0

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\a3x_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\a3x_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.a3x	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.a3x\ = "a3x_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\a3x_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\a3x_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\a3x_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2576 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2576 AcroRd32.exe
2576 AcroRd32.exe

pid	process
2576	AcroRd32.exe

pid	process
2576	AcroRd32.exe
2576	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1368 wrote to memory of 2628	1368	cmd.exe	rundll32.exe
PID 1368 wrote to memory of 2628	1368	cmd.exe	rundll32.exe
PID 1368 wrote to memory of 2628	1368	cmd.exe	rundll32.exe
PID 2628 wrote to memory of 2576	2628	rundll32.exe	AcroRd32.exe
PID 2628 wrote to memory of 2576	2628	rundll32.exe	AcroRd32.exe
PID 2628 wrote to memory of 2576	2628	rundll32.exe	AcroRd32.exe
PID 2628 wrote to memory of 2576	2628	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\script.a3x
1⤵
- Suspicious use of WriteProcessMemory
PID:1368

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\script.a3x
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2628

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
PID:2576

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
17f44eae866c5922612a55b1241016c2

SHA1
dffde0dfb26dc92933a69505578c4a964dc71f95

SHA256
d768ff44be444feda1f4075b20ce91089749b86b65911a20a05eebe5642f6a19

SHA512
8f98aa696ebc695fc9000e65bbb131659f8b34d8bf84a51324354b524fdc88855f2e98310a96dfc3232d604f7607f1d3e9f3713d245353404cfce8a80c807a93

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