2548b8a5a82c7db16055fbbaf2a4863ccf0caa92d661b6be0481432c48af818a

Resubmissions

11-08-2023 18:09

230811-wrxmsshg7w 10

10-08-2023 16:39

10-08-2023 16:00

10-08-2023 15:59

10-08-2023 15:56

Analysis

max time kernel
843s
max time network
848s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
11-08-2023 18:09

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General

Target

shellcode_loader_1.pyc
Size

16KB
MD5

2ecdeddd4dd58e971a25977e6380b69c
SHA1

3aa8c158f7642e234a1c85b8a710afcc323fafee
SHA256

c9ec7a340b75ef9afb510c57450b64c40c5bf4c3bbb8e6a4e3a2668a6dc52e1b
SHA512

d26e265dfa0c87c5b276098005bf4659fe2725d57aaeae07882ede3eb345af7a1eb68561fe3ec7afd873564cfe153d3dd85484ed062db8bb45102e416d868256
SSDEEP

384:gbDIWXhBbgX5X9Ck4bwBFJlun16vnsNZKljWhhh:CKZvD4hh

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
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_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-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2904 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

2904 AcroRd32.exe
2904 AcroRd32.exe
2904 AcroRd32.exe

pid	process
2904	AcroRd32.exe

pid	process
2904	AcroRd32.exe
2904	AcroRd32.exe
2904	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2588 wrote to memory of 2428	2588	cmd.exe	rundll32.exe
PID 2588 wrote to memory of 2428	2588	cmd.exe	rundll32.exe
PID 2588 wrote to memory of 2428	2588	cmd.exe	rundll32.exe
PID 2428 wrote to memory of 2904	2428	rundll32.exe	AcroRd32.exe
PID 2428 wrote to memory of 2904	2428	rundll32.exe	AcroRd32.exe
PID 2428 wrote to memory of 2904	2428	rundll32.exe	AcroRd32.exe
PID 2428 wrote to memory of 2904	2428	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\shellcode_loader_1.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2588

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\shellcode_loader_1.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2428

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\shellcode_loader_1.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2904

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
2b7587ba7475f22d8c77dec27250983a

SHA1
ccca8d71e008626839154c01a76624809ccdc11d

SHA256
d59c93214fd6870f9c2dcd8bd4a22e5ca62a87f1401bad59c3c4aeb61dc9d6da

SHA512
ec85b3bdf532346daebf46a596045d6255d1318ac4f59ef13787ac4776d67132f62f309a1b035edbdf7bc6dadc27b851e0ff04e33684b54ef51ad2a05e913f1f

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