Malware Analysis Report

2025-01-03 04:55

Sample ID 220422-ae5lzsheb8
Target IMG_106_680_74_80.pdf
SHA256 9b26547086a1489e5534452021694af3a565fe76926e671112be4852947a5d27
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

9b26547086a1489e5534452021694af3a565fe76926e671112be4852947a5d27

Threat Level: Known bad

The file IMG_106_680_74_80.pdf 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

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-22 00:08

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-22 00:08

Reported

2022-04-22 00:14

Platform

win7-20220414-en

Max time kernel

63s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1980 set thread context of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1980 wrote to memory of 1444 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 1444 wrote to memory of 976 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1444 wrote to memory of 976 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1444 wrote to memory of 976 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1444 wrote to memory of 976 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

"C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe"

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 768

Network

Country Destination Domain Proto
US 8.8.8.8:53 osiq.icu udp
US 99.83.154.118:80 osiq.icu tcp

Files

memory/1980-54-0x0000000001090000-0x00000000010F2000-memory.dmp

memory/1980-55-0x00000000004D0000-0x00000000004DA000-memory.dmp

memory/1980-56-0x00000000005A0000-0x00000000005C4000-memory.dmp

memory/1980-57-0x00000000768D1000-0x00000000768D3000-memory.dmp

memory/1444-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-59-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-61-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-63-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-65-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-67-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-68-0x000000000040717B-mapping.dmp

memory/1444-70-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1444-72-0x0000000000400000-0x0000000000438000-memory.dmp

memory/976-73-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-22 00:08

Reported

2022-04-22 00:13

Platform

win10v2004-20220414-en

Max time kernel

184s

Max time network

189s

Command Line

"C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2312 set thread context of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2312 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4200 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe
PID 2312 wrote to memory of 4348 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

Processes

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

"C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe"

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4348 -ip 4348

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4348 -s 1344

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
NL 104.97.14.81:80 tcp
US 93.184.220.29:80 tcp
US 52.168.117.170:443 tcp
NL 104.110.191.133:80 tcp
US 104.18.32.68:80 tcp
US 172.64.155.188:80 tcp
US 8.8.8.8:53 osiq.icu udp
US 99.83.154.118:80 osiq.icu tcp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 storesdk.dsx.mp.microsoft.com udp
FR 2.18.109.224:443 storesdk.dsx.mp.microsoft.com tcp
FR 2.16.119.157:443 tcp

Files

memory/2312-130-0x00000000003F0000-0x0000000000452000-memory.dmp

memory/2312-131-0x0000000004E30000-0x0000000004EA6000-memory.dmp

memory/2312-132-0x0000000004E00000-0x0000000004E1E000-memory.dmp

memory/4200-133-0x0000000000000000-mapping.dmp

memory/4348-134-0x0000000000000000-mapping.dmp

memory/4348-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4348-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4348-137-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4348-138-0x0000000000400000-0x0000000000438000-memory.dmp