Behavioral Report

Analysis

max time kernel
157s
max time network
38s
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/rsDNSSvc.installstate
Size

7KB
MD5

362ce475f5d1e84641bad999c16727a0
SHA1

6b613c73acb58d259c6379bd820cca6f785cc812
SHA256

1f78f1056761c6ebd8965ed2c06295bafa704b253aff56c492b93151ab642899
SHA512

7630e1629cf4abecd9d3ddea58227b232d5c775cb480967762a6a6466be872e1d57123b08a6179fe1cfbc09403117d0f81bc13724f259a1d25c1325f1eac645b
SSDEEP

96:R3DrP/zatgCnNjn1x62muDr9aHmzcv/65m7JDcm0BefnanGEkn56vT4ZvR++JDr+:NexdYX7OSRjXsaA0Ndhi

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-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\installstate_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\installstate_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\installstate_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.installstate	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.installstate\ = "installstate_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\installstate_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\installstate_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\installstate_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

2020 AcroRd32.exe
2020 AcroRd32.exe
2020 AcroRd32.exe

pid	process
2020	AcroRd32.exe
2020	AcroRd32.exe
2020	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1352 wrote to memory of 928	1352	cmd.exe	rundll32.exe
PID 1352 wrote to memory of 928	1352	cmd.exe	rundll32.exe
PID 1352 wrote to memory of 928	1352	cmd.exe	rundll32.exe
PID 928 wrote to memory of 2020	928	rundll32.exe	AcroRd32.exe
PID 928 wrote to memory of 2020	928	rundll32.exe	AcroRd32.exe
PID 928 wrote to memory of 2020	928	rundll32.exe	AcroRd32.exe
PID 928 wrote to memory of 2020	928	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\ReasonLabs\DNS\rsDNSSvc.installstate
- Suspicious use of WriteProcessMemory
PID:1352

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\rsDNSSvc.installstate
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:928

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\rsDNSSvc.installstate"
- Suspicious use of SetWindowsHookEx
PID:2020

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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