42f47cb41507151ec2db8422662adfd8d234533874740b6680ebd06f4f359403

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-07-2024 03:33

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General

Target

PySilon-malware-3.7.5/resources/source_code/block_input.py
Size

2KB
MD5

b70feedd80d5267aadc24132ecda5633
SHA1

1f4995eee52226ca1c2d6c54ea98900120093c88
SHA256

346216866f911ddd4a4f80ac15dcf25d3fc6a49a9024f19facc599561afc1072
SHA512

0471eb21e3ff9f99f4afb3fb174f453a9b7c7096576791fb8e23a47eba78706ccd53de6011ed3f91eccd23f187b80a56980ef2360c95285fc69d94779cac73c6

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
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2536 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2536 AcroRd32.exe
2536 AcroRd32.exe

pid	process
2536	AcroRd32.exe

pid	process
2536	AcroRd32.exe
2536	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2676 wrote to memory of 2556	2676	cmd.exe	rundll32.exe
PID 2676 wrote to memory of 2556	2676	cmd.exe	rundll32.exe
PID 2676 wrote to memory of 2556	2676	cmd.exe	rundll32.exe
PID 2556 wrote to memory of 2536	2556	rundll32.exe	AcroRd32.exe
PID 2556 wrote to memory of 2536	2556	rundll32.exe	AcroRd32.exe
PID 2556 wrote to memory of 2536	2556	rundll32.exe	AcroRd32.exe
PID 2556 wrote to memory of 2536	2556	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\PySilon-malware-3.7.5\resources\source_code\block_input.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2676

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\PySilon-malware-3.7.5\resources\source_code\block_input.py
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2556

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\PySilon-malware-3.7.5\resources\source_code\block_input.py"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2536

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
b1c12dfbc9b0c0e1bfabc066e37d901f

SHA1
612dfe85c7b648cf7dd33866f889a890b1753080

SHA256
4a015e33dc2f097435576840b6d4fb187512fd0fa2d39cd2e4ef64a98c60d66c

SHA512
73e99c6a517c46ea95369f87bce234d2f093b162e316419cbef3f0f60f142b5e1eacba0613fc49dba092fff98a03283f875350ae9761f59b4e1072c4a503a653

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