b01ee9e4b7e57dc0d9a0415723cbc1e7df84c90b352d9b2a716e222360961de8

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/09/2024, 12:18

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General

Target
PySilon-malware-main/builder.py
Size 30KB
Sample240905-pg217s1flb
SHA256 443bd85e3bf8d6a5880400025047933bf58e7cccdb9f1c7585fc6932113f2fdb
MD5 f011ab09f5e640bbf339d9edd93e2739
SHA1 cfe055600b42ed2eb3b77c3f9632301cd4c3e6dd
SHA512 bdae087b6fa1a781805fa8a1a2b248e23226261bb4be179dcf1b762f0a1241f7d697797434f23e0820ab39b4c6156c9b4674383cdfb251ce346351132b6ee3b3
SSDEEP 768:d2PufIVSZvFWL2sthHqxFgYP0kqhvqeju:d22QEZvMLp/HqxFgYP0kqhvqei
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

discovery

Malware Config

Signatures

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\py_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\py_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\py_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\.py	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\py_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-1-5-21-312935884-697965778-3955649944-1000_CLASSES\py_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\.py\ = "py_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\py_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2876	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2876	AcroRd32.exe
2876	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2752	2068	cmd.exe	31
PID 2068 wrote to memory of 2752	2068	cmd.exe	31
PID 2068 wrote to memory of 2752	2068	cmd.exe	31
PID 2752 wrote to memory of 2876	2752	rundll32.exe	32
PID 2752 wrote to memory of 2876	2752	rundll32.exe	32
PID 2752 wrote to memory of 2876	2752	rundll32.exe	32
PID 2752 wrote to memory of 2876	2752	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\PySilon-malware-main\builder.py
1⤵
- Suspicious use of WriteProcessMemory
PID:2068
- 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:2752
- - 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⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 503f80b4205acda4ce306a4923ce51d1f463ba754fb4155ee769ac390471517f
MD5 b7e002b6fafe91187205ce216c6cad92
SHA1 31664671f1f0e8c645e93c534ef0e204aac5f4b4
SHA512 46f5f564c4199f9c14addc65b51f322543d42b8f042a2d2ca67a8c29f657ed72af64c9ef31cb41a625d82ede63fbafdc302f8d90d7241b17f8cb4bf9412751d8
MD5 SHA1 SHA512

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