4d4d53b1838441f48f171c68ff21096c582492866a8fd2fa7f8e91e24cf8a0d7

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 03:18

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General

Target

doorstop_libs/libdoorstop_x86.so
Size

30KB
MD5

97411f23135ed19118a47b11a3095983
SHA1

3c40a7017e11a4f35201c7083d50bdf7ef51bc0b
SHA256

fb7b75792109d5694e0a7faa8516c247a9550558990775bdd2ea613cb0bbec46
SHA512

7ca259a4e04a5e6a131f97026d4a791abe5551507c29eeed50100933859cea803951cb8702ccb616ae181fa0c8244b86fe31157108f64dd7025922c1d680159c
SSDEEP

768:aGBo/wC0cOCerZ3WOSRu1j5wTRgNN89uqTrx:KwXcOCmaRB9FT

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-1-5-21-2297530677-1229052932-2803917579-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\so_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.so	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\.so\ = "so_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\so_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\so_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\so_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\so_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000_CLASSES\so_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2032 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2032 AcroRd32.exe
2032 AcroRd32.exe

pid	process
2032	AcroRd32.exe

pid	process
2032	AcroRd32.exe
2032	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2292 wrote to memory of 2676	2292	cmd.exe	rundll32.exe
PID 2292 wrote to memory of 2676	2292	cmd.exe	rundll32.exe
PID 2292 wrote to memory of 2676	2292	cmd.exe	rundll32.exe
PID 2676 wrote to memory of 2032	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2032	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2032	2676	rundll32.exe	AcroRd32.exe
PID 2676 wrote to memory of 2032	2676	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\doorstop_libs\libdoorstop_x86.so
1⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\doorstop_libs\libdoorstop_x86.so
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2676

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\doorstop_libs\libdoorstop_x86.so"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2032

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
7ac880a32441692e179777ee11e128ba

SHA1
c677d89d6030b84929a2166d1245919eb8b279fb

SHA256
16a4c8c084eebea8997519a31f436a4917166e53cc30dc78773a44642ac430aa

SHA512
12a65bf898b469d3b6d2d1d92335e51effb620cafd18d94b188f54854960085e87a565af6e845f7856c71aee13abefb39c52528a950b917e5c72bd18bf94947f

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