a974f28684d62fb86112d66c02b36d0a3456ddfd7a0e3227f24e79a707bba79c

Resubmissions

10/06/2024, 13:26

240610-qpxbcsxbra 8

10/06/2024, 13:22

240610-qmq2kaxfll 8

10/06/2024, 13:16

240610-qh9m4swhle 8

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
10/06/2024, 13:22

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General

Target

PySilon-malware-main/builder.py
Size

30KB
MD5

f011ab09f5e640bbf339d9edd93e2739
SHA1

cfe055600b42ed2eb3b77c3f9632301cd4c3e6dd
SHA256

443bd85e3bf8d6a5880400025047933bf58e7cccdb9f1c7585fc6932113f2fdb
SHA512

bdae087b6fa1a781805fa8a1a2b248e23226261bb4be179dcf1b762f0a1241f7d697797434f23e0820ab39b4c6156c9b4674383cdfb251ce346351132b6ee3b3
SSDEEP

768:d2PufIVSZvFWL2sthHqxFgYP0kqhvqeju:d22QEZvMLp/HqxFgYP0kqhvqei

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\py_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2716	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2716	AcroRd32.exe
2716	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 2656	1720	cmd.exe	29
PID 1720 wrote to memory of 2656	1720	cmd.exe	29
PID 1720 wrote to memory of 2656	1720	cmd.exe	29
PID 2656 wrote to memory of 2716	2656	rundll32.exe	30
PID 2656 wrote to memory of 2716	2656	rundll32.exe	30
PID 2656 wrote to memory of 2716	2656	rundll32.exe	30
PID 2656 wrote to memory of 2716	2656	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\PySilon-malware-main\builder.py
1⤵
- Suspicious use of WriteProcessMemory
PID:1720
- 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-main\builder.py
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2656
- - 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-main\builder.py"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
a5166c9c7a079ca9e90389b3a0ad2418

SHA1
468748fcc7885798eee551ae23e87588bc4621ad

SHA256
519c461d5dc3075966571c46a61dcfb1a8570501b98fd5dc1ef277f3e3e8fed1

SHA512
a094705c11880416617e95281570280e654df25829d39dc56455d49d3697a815e6805c195fea3c11e3cfc21e1741aacb17773b5e9bff1712bf05c1fb9ad9408e

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