32aaffb3abfa622c185dd01ebd7c7e72bed07f9a5f1bdad151ab163a42ab8a80

Analysis

max time kernel
1803s
max time network
1608s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06-02-2023 15:57

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Payload/YouTube.app/Frameworks/YTUHD.dylib
Size

65KB
MD5

f472c8ac20cd90c8f830b16714aa32f7
SHA1

804447374bd7226ca2161015acd7c238714429ed
SHA256

157246e3f7e1ba56bfff0d5b2ec3b56da8ced39451d1832c3ef5c1732a698208
SHA512

b562e567f68b665df16987525a8b785d5129cbffce13abc247b4782ed27f248170c50d84e321727975bd99f378fad99e932daf23b06e81cf88b9789487fc27a3
SSDEEP

192:IAh1Wm9tFpPAAT3s4FHfF2CRV6HBh5J48tmtcYXahm2:IAh797rT3s4FHfMCH67Ftmtc

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\dylib_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.dylib\ = "dylib_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\dylib_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\dylib_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\dylib_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\.dylib	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\dylib_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000_CLASSES\dylib_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

1384 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1384 AcroRd32.exe
1384 AcroRd32.exe
1384 AcroRd32.exe

pid	process
1384	AcroRd32.exe

pid	process
1384	AcroRd32.exe
1384	AcroRd32.exe
1384	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1348 wrote to memory of 368	1348	cmd.exe	rundll32.exe
PID 1348 wrote to memory of 368	1348	cmd.exe	rundll32.exe
PID 1348 wrote to memory of 368	1348	cmd.exe	rundll32.exe
PID 368 wrote to memory of 1384	368	rundll32.exe	AcroRd32.exe
PID 368 wrote to memory of 1384	368	rundll32.exe	AcroRd32.exe
PID 368 wrote to memory of 1384	368	rundll32.exe	AcroRd32.exe
PID 368 wrote to memory of 1384	368	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Payload\YouTube.app\Frameworks\YTUHD.dylib
1⤵
- Suspicious use of WriteProcessMemory
PID:1348

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Payload\YouTube.app\Frameworks\YTUHD.dylib
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:368

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\Payload\YouTube.app\Frameworks\YTUHD.dylib"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1384

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/368-76-0x0000000000000000-mapping.dmp

Download
memory/1348-54-0x000007FEFC311000-0x000007FEFC313000-memory.dmp

Filesize
8KB

Download
memory/1384-81-0x0000000000000000-mapping.dmp

Download
memory/1384-82-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download