cbaee40ffd6727d6d5b207d524e19f95535a0d898ce9df6611069b8b8ff252c1

Resubmissions

20-05-2024 05:05

240520-fq6lbade9v 10

20-05-2024 04:53

240520-fh1ebsdb7w 5

Analysis

max time kernel
122s
max time network
119s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20-05-2024 04:53

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General

Target

script.a3x
Size

548KB
MD5

404bd47f17d482e139e64d0106b8888d
SHA1

bd96c024dcba4fda4e3c9aa9dfcc03f37d072cc7
SHA256

0116d3f7e5ecafaf572141a6eaf3bffa80ff04519872be77f07f4b284272db5d
SHA512

fafe9fd532290b50135a5e18ac52590d99652027cefc016606105ddb4758d0db74a722894a9be9ff1a89d70cd08deb53eac1c47213b38911a1744aecb0d92c05
SSDEEP

12288:5ORwcZ/qOKfCMMF3WDbmYMfmGI5/MjyLiy6U9TDh:ouehh2bFMfy5TdTDh

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
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
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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2648 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2648 AcroRd32.exe
2648 AcroRd32.exe

pid	process
2648	AcroRd32.exe

pid	process
2648	AcroRd32.exe
2648	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2432 wrote to memory of 2728	2432	cmd.exe	rundll32.exe
PID 2432 wrote to memory of 2728	2432	cmd.exe	rundll32.exe
PID 2432 wrote to memory of 2728	2432	cmd.exe	rundll32.exe
PID 2728 wrote to memory of 2648	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2648	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2648	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2648	2728	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:2432

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:2728

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:2648

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
02795e109f18fc676d49ff937e0e0464

SHA1
375f93da04514dd38863c34cd26556cc3c43cd57

SHA256
6e93671e5a7a3bf8fa51049568162b3467ec86075a761528d2500289775551b2

SHA512
7fc3e6140a21ec49ad1010569c240a0da3a30e3ba2bb81c824d9c8c52ecdbb0b1f836c459073690d23cd4ae3654968c2992f4673208bf4a042706cc69f73c727

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