915e18ee4e889e1612331e6e233e110380a1360e8f372d01e4681745b50a63ac

Analysis

max time kernel
117s
max time network
124s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 12:55

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General

Target

Stub.pyc
Size

179KB
MD5

5ff220de07fce3486505f9bdac298e7a
SHA1

5ed4df1e43e9160aa695564d22d2c62f8293b216
SHA256

4e26a9c63f642fe1f707ae78d1482232703797619800cbfe983c5d5f7946d4b3
SHA512

9efbca56b2bb90566d7fb1dc9d490b9c87760334d48fbf5c062165c51629a9b5fa860b6d3ac3a10fc6b2ee367128005af04f417e4c404b32444b95ef649c881f
SSDEEP

3072:dcH3I+7JxnEjXSbvjK2BO34Z7uuG6ZX3e5VKN5wjZ8LptP/hMmfod/9DYO+n:dcHB7f8CfK2B+5VTohfs+n

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-1-5-21-39690363-730359138-1046745555-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_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-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

624 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

624 AcroRd32.exe
624 AcroRd32.exe

pid	process
624	AcroRd32.exe

pid	process
624	AcroRd32.exe
624	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1968 wrote to memory of 2636	1968	cmd.exe	rundll32.exe
PID 1968 wrote to memory of 2636	1968	cmd.exe	rundll32.exe
PID 1968 wrote to memory of 2636	1968	cmd.exe	rundll32.exe
PID 2636 wrote to memory of 624	2636	rundll32.exe	AcroRd32.exe
PID 2636 wrote to memory of 624	2636	rundll32.exe	AcroRd32.exe
PID 2636 wrote to memory of 624	2636	rundll32.exe	AcroRd32.exe
PID 2636 wrote to memory of 624	2636	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:1968

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:2636

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:624

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
a979e3769237dd1b040bbc3e57c0adc2

SHA1
449ed68a58a3b933fdc2150d9b85b2b3609a58f7

SHA256
b0634fbbd1c8ff0d03588313fc4a5846f6777e26da4d8e75aca0164a7263d96d

SHA512
25d897073753ec6ab977d1f6d33cd0cd472fc2a83dd49a80b948e20c67cd1c66ebba30f388aa75a3806c2f0a0495acb99a71b9e358fcf97ea4f4fea0a8675da3

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