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
150s
max time network
120s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
10-08-2023 16:00

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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
Set value (str)	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_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-1-5-21-377084978-2088738870-2818360375-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000_CLASSES\pyc_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2952 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

2952 AcroRd32.exe
2952 AcroRd32.exe
2952 AcroRd32.exe

pid	process
2952	AcroRd32.exe

pid	process
2952	AcroRd32.exe
2952	AcroRd32.exe
2952	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2420 wrote to memory of 288	2420	cmd.exe	rundll32.exe
PID 2420 wrote to memory of 288	2420	cmd.exe	rundll32.exe
PID 2420 wrote to memory of 288	2420	cmd.exe	rundll32.exe
PID 288 wrote to memory of 2952	288	rundll32.exe	AcroRd32.exe
PID 288 wrote to memory of 2952	288	rundll32.exe	AcroRd32.exe
PID 288 wrote to memory of 2952	288	rundll32.exe	AcroRd32.exe
PID 288 wrote to memory of 2952	288	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:2420

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:288

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:2952

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
3505f6345cbbc7fc4a254902f8a804fa

SHA1
6a3fb26cdd7ba47b024e2711c8b8cc9aecfbf42a

SHA256
435427e6938c112ed56e8897df70a9cb001ec5ed1de9fdf2ea2d569b04bbc853

SHA512
e29adab15aebe0abf2cb046df1a834bd8021cff64a95f3021c51c4f4d4a31da0611b813800b627c3970be1a2518a9d467287ecac7c305ca80f0949f5cab6ba4f

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