Malware Analysis Report

2024-11-13 16:42

Sample ID 230228-b9srcagh97
Target Adsqvxkav.dll
SHA256 aa7629b74518b2a006c6451739a68208c56f59f7ed5cc4df837552d104b0d66a
Tags
loader purecrypter
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

aa7629b74518b2a006c6451739a68208c56f59f7ed5cc4df837552d104b0d66a

Threat Level: Known bad

The file Adsqvxkav.dll was found to be: Known bad.

Malicious Activity Summary

loader purecrypter

Detect PureCrypter injector

Purecrypter family

Suspicious behavior: CmdExeWriteProcessMemorySpam

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-02-28 01:51

Signatures

Detect PureCrypter injector

loader
Description Indicator Process Target
N/A N/A N/A N/A

Purecrypter family

purecrypter

Analysis: behavioral1

Detonation Overview

Submitted

2023-02-28 01:51

Reported

2023-02-28 01:53

Platform

win7-20230220-en

Max time kernel

30s

Max time network

33s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Adsqvxkav.dll,#1

Signatures

Suspicious behavior: CmdExeWriteProcessMemorySpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\regsvr32.exe N/A
N/A N/A C:\Windows\system32\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1524 wrote to memory of 268 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 268 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 268 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 268 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 268 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 1772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 1772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 1772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 1772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 1524 wrote to memory of 1772 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Adsqvxkav.dll,#1

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe"

C:\Windows\system32\regsvr32.exe

regsvr32 Admin.bmp

C:\Windows\system32\regsvr32.exe

regsvr32 /s Admin.bmp

Network

N/A

Files

memory/268-54-0x00000000001F0000-0x00000000001F1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-02-28 01:51

Reported

2023-02-28 01:53

Platform

win10-20230220-en

Max time kernel

75s

Max time network

146s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Adsqvxkav.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3868 wrote to memory of 1960 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 3868 wrote to memory of 1960 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 3868 wrote to memory of 2768 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 3868 wrote to memory of 2768 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 3868 wrote to memory of 3144 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe
PID 3868 wrote to memory of 3144 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\regsvr32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\Adsqvxkav.dll,#1

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe"

C:\Windows\system32\regsvr32.exe

regsvr32 AdobeSFX.log

C:\Windows\system32\regsvr32.exe

regsvr32 Adsqvxkav.dll

C:\Windows\system32\regsvr32.exe

regsvr32 /s Adsqvxkav.dll

Network

Country Destination Domain Proto
US 20.189.173.12:443 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 62.13.109.52.in-addr.arpa udp

Files

N/A