2c3a2b9bf44cabeac520d4b22e37e0e7059f325b0c2cabc23242fe6559bf0e96

Analysis

max time kernel
119s
max time network
128s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 14:40

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General

Target

lib/yaml/cyaml.pyc
Size

2KB
MD5

abe443d26821feb58ae5ebc26ada35ad
SHA1

8af92b9377d03fbc9118f965bfab8f55b047d1e5
SHA256

29c920124bd0040f3f698944bcfdf268d91bd5a593727a7ae2e31f5cc35aef6a
SHA512

21eda0f5cb2f7a7451bfcbad8c64fea03da961de9514199201a613d4086bd53dcb5648cfd3844c7871b8d5fbb34b02853b3067a7fbeead7788c995e8ea14a48c

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-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

3004 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

3004 AcroRd32.exe
3004 AcroRd32.exe

pid	process
3004	AcroRd32.exe

pid	process
3004	AcroRd32.exe
3004	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1732 wrote to memory of 2592	1732	cmd.exe	rundll32.exe
PID 1732 wrote to memory of 2592	1732	cmd.exe	rundll32.exe
PID 1732 wrote to memory of 2592	1732	cmd.exe	rundll32.exe
PID 2592 wrote to memory of 3004	2592	rundll32.exe	AcroRd32.exe
PID 2592 wrote to memory of 3004	2592	rundll32.exe	AcroRd32.exe
PID 2592 wrote to memory of 3004	2592	rundll32.exe	AcroRd32.exe
PID 2592 wrote to memory of 3004	2592	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\lib\yaml\cyaml.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\lib\yaml\cyaml.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2592

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\lib\yaml\cyaml.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:3004

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
718f3ea2e44b669221a1b905958e18a9

SHA1
5f8633f1499c03e8033118c33109b87f31ca35a4

SHA256
e26288ef4be33156db093fda7ded4ca0b85fc3299b94102427c9daa535c51f90

SHA512
34e61e5adf339819c339c371b7fa191f49a5b5e7b9656907b8a8ab2aae52ecdce0174c50ab468f5a0a3166810432f78b02220af8d30e754a1bfb88c4ab891d44

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