2d844e46b73efbcb440d5e89a2ea1e26e39fc0a2a70ec7967db586e70e30e6ea

Resubmissions

28-05-2024 17:16

240528-vs87jsch7w 3

28-05-2024 17:07

240528-vm9acsdh42 3

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
28-05-2024 17:16

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General

Target

script.a3x
Size

547KB
MD5

dfa96717b69fa69d264a60b9de36f078
SHA1

b18dd41bcdc7a75a4b505cbdfb337cf19a2934d8
SHA256

493fb733897f4c3d7adf01d663e711e2e47240bfdf5b99abd230aa809f43a8cf
SHA512

5772cdac81361297d72f620e23068da8180fce09935340caaf279b6719f446ad3fd85dfc3004258e943092a73f914b84f9a12ef85630ac32410d1a7ddd3b41c7
SSDEEP

12288:NeZu+gIZHxCQ4bamk1FNTVRppgU+ehWwhz5u6+c5zzq:VqRCQ4RU7ppgK35t+cdO

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-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\a3x_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.a3x	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\a3x_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\.a3x\ = "a3x_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\a3x_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\a3x_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\a3x_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_CLASSES\a3x_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2772 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2772 AcroRd32.exe
2772 AcroRd32.exe

pid	process
2772	AcroRd32.exe

pid	process
2772	AcroRd32.exe
2772	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2348 wrote to memory of 2732	2348	cmd.exe	rundll32.exe
PID 2348 wrote to memory of 2732	2348	cmd.exe	rundll32.exe
PID 2348 wrote to memory of 2732	2348	cmd.exe	rundll32.exe
PID 2732 wrote to memory of 2772	2732	rundll32.exe	AcroRd32.exe
PID 2732 wrote to memory of 2772	2732	rundll32.exe	AcroRd32.exe
PID 2732 wrote to memory of 2772	2732	rundll32.exe	AcroRd32.exe
PID 2732 wrote to memory of 2772	2732	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:2348

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:2732

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:2772

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
10d594d9153ca5c1581e19a97c76dc25

SHA1
8d40d712d823dfce775fb7d89b819dae9763dfbe

SHA256
184253263e016301ad44c694b617438d650fe454308878520d6e92ba370b7170

SHA512
b72dcccd0e2333b8af49ae5f8e5b0d8416e702dd725d845bf519e809c3620730c3c644b0b2f71d584f3fe777a13a66b80b00f5fab7b334f0920781192db822b7

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