2c3a2b9bf44cabeac520d4b22e37e0e7059f325b0c2cabc23242fe6559bf0e96

Analysis

max time kernel
118s
max time network
133s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
30-06-2024 14:40

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General

Target

lib/yaml/constructor.pyc
Size

19KB
MD5

470c71de88613564d476b95125c93a13
SHA1

a0457c3775be3beef4ed7b1762b8fb5d3d8fb805
SHA256

47ff9fbf6d15abd7f48d299bf7b90f32c75e3a49460ad929203786499ce75768
SHA512

e10c47c8615e6773c281e7c2f17c638c397549653317dc48a7323271057a5e61e94c9e3f68d6970a48f2100e6e72520917912b2c9b8f5a6636a331542a81a4f5
SSDEEP

384:lrSkM3Hq3Kr4+NYTFldsLFCOMYM7smCUTG9PJZAgO8cg6fqlga27SPVtf+1/I30b:lWkM3Hq3KrzNYTFldsLsOMYM7smCUTGI

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-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_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-1-5-21-2812790648-3157963462-487717889-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2784 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2784 AcroRd32.exe
2784 AcroRd32.exe

pid	process
2784	AcroRd32.exe

pid	process
2784	AcroRd32.exe
2784	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2356 wrote to memory of 2760	2356	cmd.exe	rundll32.exe
PID 2356 wrote to memory of 2760	2356	cmd.exe	rundll32.exe
PID 2356 wrote to memory of 2760	2356	cmd.exe	rundll32.exe
PID 2760 wrote to memory of 2784	2760	rundll32.exe	AcroRd32.exe
PID 2760 wrote to memory of 2784	2760	rundll32.exe	AcroRd32.exe
PID 2760 wrote to memory of 2784	2760	rundll32.exe	AcroRd32.exe
PID 2760 wrote to memory of 2784	2760	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\lib\yaml\constructor.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2356

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\constructor.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2760

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\constructor.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2784

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
393bfbf0a4040e691fa26eed7f60cfd1

SHA1
7f1ef73b82d7c3283f9b101e9e2b9a2fe6fa662e

SHA256
397db765cb259944a5a1f5aa39d98d35981d43dc74f70b18b55203c78c5dd4c8

SHA512
38728b1a6619b55694c02c146e93411ae56023f0a35bf2cadcf3499fe40adc35587a55a53a0178cbb8fd6b3fe96f7547084350588f9efdfc3c935cac103d7131

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