24de2b71477635f2bdb96e6990ed37de9cb8848dd29210ffe8ddd1d0ec948734

Analysis

max time kernel
190s
max time network
62s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
26-11-2022 16:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

sample.tar
Size

1.7MB
MD5

665ad3ec72b0bafa64bb336ecd156b9e
SHA1

74d32a81a9c6165d8c477c23836a0719901354a2
SHA256

843ec4f0c893555b6a5ccb7b0923d061f879b4f11adc2bcc376c922fb59fefaa
SHA512

343125ac62765560ed4781b089215910ce2ab4c36a37e3ae2ab9c9a9a4176d2f2261cc5333c440678722ecbe082024c53f64a002b2221c2e7c5264ebef04ade9
SSDEEP

49152:6IYq0+N/Z6eM09o5HF9wBS11iTSvN8yu7L2K:xYq0iMnjB7wBS11iTSI2

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-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\tar_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.tar	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.tar\ = "tar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\tar_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\tar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\tar_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\tar_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\tar_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

576 AcroRd32.exe
576 AcroRd32.exe
576 AcroRd32.exe

pid	process
576	AcroRd32.exe
576	AcroRd32.exe
576	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1628 wrote to memory of 1784	1628	cmd.exe	rundll32.exe
PID 1628 wrote to memory of 1784	1628	cmd.exe	rundll32.exe
PID 1628 wrote to memory of 1784	1628	cmd.exe	rundll32.exe
PID 1784 wrote to memory of 576	1784	rundll32.exe	AcroRd32.exe
PID 1784 wrote to memory of 576	1784	rundll32.exe	AcroRd32.exe
PID 1784 wrote to memory of 576	1784	rundll32.exe	AcroRd32.exe
PID 1784 wrote to memory of 576	1784	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\sample.tar
1⤵
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\sample.tar
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1784

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\sample.tar"
3⤵
- Suspicious use of SetWindowsHookEx
PID:576

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/576-81-0x0000000000000000-mapping.dmp

Download
memory/576-82-0x0000000076041000-0x0000000076043000-memory.dmp

Filesize
8KB

Download
memory/1628-54-0x000007FEFBB81000-0x000007FEFBB83000-memory.dmp

Filesize
8KB

Download
memory/1784-76-0x0000000000000000-mapping.dmp

Download