Malware Analysis Report

2024-09-22 21:45

Sample ID 240318-tch5rada8x
Target d3e88703aaa4fe2bfdb0f663744724cc
SHA256 992ddc778bc3af49b9b7c424071cfe0db67dbcee83994debfee421ef4190d473
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

992ddc778bc3af49b9b7c424071cfe0db67dbcee83994debfee421ef4190d473

Threat Level: Known bad

The file d3e88703aaa4fe2bfdb0f663744724cc was found to be: Known bad.

Malicious Activity Summary

oski infostealer spyware stealer

Oski

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-03-18 15:54

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-18 15:54

Reported

2024-03-18 15:57

Platform

win7-20240221-en

Max time kernel

118s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2296 set thread context of 2080 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2296 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
PID 2296 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
PID 2296 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
PID 2296 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
PID 2296 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe
PID 2080 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Windows\SysWOW64\WerFault.exe
PID 2080 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Windows\SysWOW64\WerFault.exe
PID 2080 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Windows\SysWOW64\WerFault.exe
PID 2080 wrote to memory of 2480 N/A C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe

"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"

C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe

"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2080 -s 772

Network

Country Destination Domain Proto
US 8.8.8.8:53 chikkark.xyz udp

Files

memory/2080-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2296-3-0x00000000001A0000-0x00000000001A2000-memory.dmp

memory/2296-1-0x0000000000260000-0x0000000000360000-memory.dmp

memory/2080-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2080-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2296-8-0x00000000001A0000-0x00000000001A2000-memory.dmp

memory/2080-9-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-18 15:54

Reported

2024-03-18 15:57

Platform

win10v2004-20231215-en

Max time kernel

92s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe

"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"

C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe

"C:\Users\Admin\AppData\Local\Temp\d3e88703aaa4fe2bfdb0f663744724cc.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3800 -ip 3800

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 1296

Network

Country Destination Domain Proto
US 8.8.8.8:53 chikkark.xyz udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 130.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 177.178.17.96.in-addr.arpa udp

Files

memory/1720-1-0x0000000000C40000-0x0000000000D40000-memory.dmp

memory/3800-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1720-3-0x0000000000FE0000-0x0000000000FE2000-memory.dmp

memory/3800-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-4-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3800-9-0x0000000000400000-0x0000000000438000-memory.dmp