ceb3382fea48084c22b96853500685212eb4dc7515d0f3d1170628a4e7ab5e90

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
29-06-2024 23:33

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General

Target

Stub.pyc
Size

198KB
MD5

eeea1c512f652c61804649401b70fa33
SHA1

d0925b2730e88dfe8858570d43e6defc144a95ba
SHA256

cee659c255bb5aa19b73a78e4d0c4b57ab7f46124e0d07ee287d1442c513dc83
SHA512

aceea99e959a5992124452368726bf16bf65fef9f86c751e05cef3133ccc0e762b5f329c0228bf70df2d71c09e51a09ed5fdad0e0cd89b8a97528ec724c93c96
SSDEEP

6144:PeYPhrY7CTpZNhKYhYYYYY9YYUqbGSTgPm:yspLSbGSkm

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\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
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\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000_CLASSES\.pyc	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\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2760 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2760 AcroRd32.exe
2760 AcroRd32.exe

pid	process
2760	AcroRd32.exe

pid	process
2760	AcroRd32.exe
2760	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2916 wrote to memory of 3020	2916	cmd.exe	rundll32.exe
PID 2916 wrote to memory of 3020	2916	cmd.exe	rundll32.exe
PID 2916 wrote to memory of 3020	2916	cmd.exe	rundll32.exe
PID 3020 wrote to memory of 2760	3020	rundll32.exe	AcroRd32.exe
PID 3020 wrote to memory of 2760	3020	rundll32.exe	AcroRd32.exe
PID 3020 wrote to memory of 2760	3020	rundll32.exe	AcroRd32.exe
PID 3020 wrote to memory of 2760	3020	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:2916

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:3020

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:2760

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
f67920109fbcbc3f13be712d69481893

SHA1
3f7abb665ed1505b6db3f99ad1d7a5e299f345f7

SHA256
cfcbd37e114d129d9c7c406ffcdc6c8ae4ddd0f1a83a7edb67239602cb3d30d7

SHA512
b3771c81febb7fefdef38f1305ddc6c998e9d19276beff6f4f7ae286be9b706bf88799b3f0e4aa63ec07b0a4fcaff078d783713c0ee2d41ef37bac9999290111

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