fa9e580d42e1779416aacd9e607f91ffb317411485f1ea7576b53e07ad8d4df1

Analysis

max time kernel
32s
max time network
16s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/05/2024, 15:42

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General

Target

Stub.pyc
Size

875KB
MD5

f9831a9a3ff275207efa27868672503d
SHA1

a85c50e5a9dae11ac402daaba0e4c2762e839af0
SHA256

f683502becd15ec94f2d3175add74a6c8759178a617e15d3801d11bb2d4c92eb
SHA512

8a671e751443fe48fa156cb1de646782db8fd1a2a59b8fa0e8247bc0a91b1aacab3a058bb5d9c617dc40970b47d96a84ad34a4d55216bdcac6f3e378610f03dc
SSDEEP

24576:OONIZ/KW//MzIrMbYw3UgD1+J3BadmuPP:OV/MkrMblUgU7Y

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_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-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\pyc_auto_file	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2716	AcroRd32.exe
2716	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 2540	1296	cmd.exe	29
PID 1296 wrote to memory of 2540	1296	cmd.exe	29
PID 1296 wrote to memory of 2540	1296	cmd.exe	29
PID 2540 wrote to memory of 2716	2540	rundll32.exe	30
PID 2540 wrote to memory of 2716	2540	rundll32.exe	30
PID 2540 wrote to memory of 2716	2540	rundll32.exe	30
PID 2540 wrote to memory of 2716	2540	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Stub.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1296
- 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:2540
- - 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 use of SetWindowsHookEx
    PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
25218e036fdd09aff190e53615e637ca

SHA1
13a2089c2144d1e933e78cb8c3f4ba31e3be1b81

SHA256
0efba073cd779919ec81a95c80b2ec0d9366610d83bbc6ef725e8ceee4499323

SHA512
6fd1a54bcc044445f81a14549c07b5ddb9907e2d5f2615c4904f87bf3451da40bef0734306a1df2146bce1ffa0faadba2ab7b26adcba21c72cb16dcf7625d261

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