Behavioral Report

Analysis

max time kernel
150s
max time network
67s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
15-03-2023 23:08

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General

Target

ReasonLabs/DNS/ui/app.asar
Size

12MB
MD5

b26d94752c190aa5dc54af6738df036c
SHA1

901fa2ee1e61583a7fc702dd82c121f84b2ede48
SHA256

5094cae0e43818efd025a8b3f4feead17ce8ac6332ac791c05f4366e3b19f454
SHA512

309853ff8c6c71b9dedd81bff0c04db620336718457c2423209bd14300b4fdac9cbaf48a303588a0e40ce81ac91097bdd0af209ed8e1661063137535df75c67e
SSDEEP

98304:7WWhZzgQEJnn/PJEuPhrrIzmkPF6F5iyNbQ0/y2:7WWnz3EJHJEKiP0IIn

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 9 IoCs

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\asar_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\asar_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\asar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\asar_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\asar_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\.asar	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\.asar\ = "asar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000_CLASSES\asar_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1552 AcroRd32.exe
1552 AcroRd32.exe
1552 AcroRd32.exe

pid	process
1552	AcroRd32.exe
1552	AcroRd32.exe
1552	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 956 wrote to memory of 1748	956	cmd.exe	rundll32.exe
PID 956 wrote to memory of 1748	956	cmd.exe	rundll32.exe
PID 956 wrote to memory of 1748	956	cmd.exe	rundll32.exe
PID 1748 wrote to memory of 1552	1748	rundll32.exe	AcroRd32.exe
PID 1748 wrote to memory of 1552	1748	rundll32.exe	AcroRd32.exe
PID 1748 wrote to memory of 1552	1748	rundll32.exe	AcroRd32.exe
PID 1748 wrote to memory of 1552	1748	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\ReasonLabs\DNS\ui\app.asar
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\ReasonLabs\DNS\ui\app.asar
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1748

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\ReasonLabs\DNS\ui\app.asar"
- Suspicious use of SetWindowsHookEx
PID:1552

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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