b78a86254b0752ed6cf71762e076d66209521ab81544bddac07129ae11a6ab3d

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-05-2024 12:00

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General

Target

Stub.pyc
Size

876KB
MD5

9fbdec4dae910fe824e2a687cd880232
SHA1

8b462b769e74de90f8b4a4eeef434fbf9e552b71
SHA256

d1f14d6147531a91456f7a849b3c05f83ce2df8d5f49e464eb2ab29f243431d3
SHA512

008522d8fb9400d2aae32c6e3bb43eb3163ef3e2344b2b5cc1c8e5659cf5ba3d2d7c7b3012f7939efba5b9e103206062dc18a5f872398a3148c3e1f6d553a41c
SSDEEP

12288:L4qEsMM56G0XODlk09mDEpIUdJq+gh/1yKLGUt/zjjIpstn5eqSUcKExqo0Bpn:8qfwEDl79mDKwh/1yUtUpsbjzXn

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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_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-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2256 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2256 AcroRd32.exe
2256 AcroRd32.exe

pid	process
2256	AcroRd32.exe

pid	process
2256	AcroRd32.exe
2256	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 3012 wrote to memory of 2768	3012	cmd.exe	rundll32.exe
PID 3012 wrote to memory of 2768	3012	cmd.exe	rundll32.exe
PID 3012 wrote to memory of 2768	3012	cmd.exe	rundll32.exe
PID 2768 wrote to memory of 2256	2768	rundll32.exe	AcroRd32.exe
PID 2768 wrote to memory of 2256	2768	rundll32.exe	AcroRd32.exe
PID 2768 wrote to memory of 2256	2768	rundll32.exe	AcroRd32.exe
PID 2768 wrote to memory of 2256	2768	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:3012

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Stub.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2768

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\Stub.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2256

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
2fc9040a5a935e29ad80626b70ddff97

SHA1
4e842ba1c96c983344fe86b0297f1201c81a8631

SHA256
7c2cf4164f1dec583f736c91f890acc7a884f60917c529b7a31a97689c61103a

SHA512
c7351ab3c2077aed31f19125d0f5ab69a3a515ee9de905e13d930b887e55243628b70d702045a1bbee9ebc242ab859ed0b64b69dc386ec025c5db743ecb5e326

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