32aaffb3abfa622c185dd01ebd7c7e72bed07f9a5f1bdad151ab163a42ab8a80

Analysis

max time kernel
1810s
max time network
1625s
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

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General

Target

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

64KB
MD5

f1698549e6d04acfc943d6ff3d889790
SHA1

3f8fa97cacdb14fca6aac2a796d5651cc8448e21
SHA256

1a437f523d7aa605e68d59039880382ca36b87a0de45264d7de6ec9761dbd8e4
SHA512

6746e934bb880adc05076733ba1bc46060416c4927ac234513bf02fb5e9ff0d433e1338737b783f4e5f6975cdbb8d2d4aa7ff8858007eadfe45c4a7a79630eb5
SSDEEP

96:53QoZtRMJZ6/ROhzOe3pPFZThjI65RjXzioinHl:Wop/ROhzOe3pdRRvr3i

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
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.dylib	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\.dylib\ = "dylib_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\dylib_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\dylib_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\dylib_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\dylib_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\dylib_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000_CLASSES\dylib_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

996 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

996 AcroRd32.exe
996 AcroRd32.exe
996 AcroRd32.exe

pid	process
996	AcroRd32.exe

pid	process
996	AcroRd32.exe
996	AcroRd32.exe
996	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 940 wrote to memory of 768	940	cmd.exe	rundll32.exe
PID 940 wrote to memory of 768	940	cmd.exe	rundll32.exe
PID 940 wrote to memory of 768	940	cmd.exe	rundll32.exe
PID 768 wrote to memory of 996	768	rundll32.exe	AcroRd32.exe
PID 768 wrote to memory of 996	768	rundll32.exe	AcroRd32.exe
PID 768 wrote to memory of 996	768	rundll32.exe	AcroRd32.exe
PID 768 wrote to memory of 996	768	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Payload\YouTube.app\Frameworks\YTReExplore.dylib
1⤵
- Suspicious use of WriteProcessMemory
PID:940

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\YTReExplore.dylib
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:768

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\YTReExplore.dylib"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:996

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

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Downloads

memory/768-76-0x0000000000000000-mapping.dmp

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memory/940-54-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

Filesize
8KB

Download
memory/996-81-0x0000000000000000-mapping.dmp

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memory/996-82-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

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