Behavioral Report

Analysis

max time kernel
155s
max time network
41s
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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Report Analysis Logs

General

Target

ReasonLabs/DNS/rsDNSSvc.installlog
Size

669B
MD5

e37047bc247256654b02753da7426053
SHA1

58c67d6554520543f82a9107689caf305728f88c
SHA256

001410b9d4a97411e00201fe23582bdbde9333852edc43b3afcf6abe2cc048dc
SHA512

5197a43f5c3b440ac3d66fa0ae830565cb4677336b0e5cb9480d66ef46d15866dc42187c8d5e17ce8900b8a698c19e89cdbf8a7021be923765e607334fad97bc

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-1-5-21-2647223082-2067913677-935928954-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\installlog_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\.installlog	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\installlog_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\installlog_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\.installlog\ = "installlog_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\installlog_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\installlog_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2647223082-2067913677-935928954-1000_CLASSES\installlog_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

972 AcroRd32.exe
972 AcroRd32.exe
972 AcroRd32.exe

pid	process
972	AcroRd32.exe
972	AcroRd32.exe
972	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1832 wrote to memory of 1656	1832	cmd.exe	rundll32.exe
PID 1832 wrote to memory of 1656	1832	cmd.exe	rundll32.exe
PID 1832 wrote to memory of 1656	1832	cmd.exe	rundll32.exe
PID 1656 wrote to memory of 972	1656	rundll32.exe	AcroRd32.exe
PID 1656 wrote to memory of 972	1656	rundll32.exe	AcroRd32.exe
PID 1656 wrote to memory of 972	1656	rundll32.exe	AcroRd32.exe
PID 1656 wrote to memory of 972	1656	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\ReasonLabs\DNS\rsDNSSvc.installlog
- Suspicious use of WriteProcessMemory
PID:1832

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.installlog
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1656

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.installlog"
- Suspicious use of SetWindowsHookEx
PID:972

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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