Malware Analysis Report

2025-01-03 04:57

Sample ID 220416-gf14hscedp
Target IMG_106_680_74_80.pdf
SHA256 9b26547086a1489e5534452021694af3a565fe76926e671112be4852947a5d27
Tags
oski infostealer spyware stealer suricata
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

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 suricata

Oski

suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

Reads user/profile data of web browsers

Suspicious use of SetThreadContext

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-16 05:45

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-16 05:45

Reported

2022-04-16 05:55

Platform

win10v2004-20220414-en

Max time kernel

94s

Max time network

99s

Command Line

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

Signatures

Oski

infostealer oski

suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

suricata

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4148 set thread context of 3136 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
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

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 -pss -s 432 -p 3136 -ip 3136

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3136 -s 1324

Network

Country Destination Domain Proto
US 20.42.73.26:443 tcp
US 67.27.133.254:80 tcp
US 67.27.133.254:80 tcp
US 67.27.133.254:80 tcp
US 8.8.8.8:53 osiq.icu udp
US 99.83.154.118:80 osiq.icu tcp

Files

memory/4148-130-0x00000000004A0000-0x0000000000502000-memory.dmp

memory/4148-131-0x0000000004F40000-0x0000000004FB6000-memory.dmp

memory/4148-132-0x0000000004EC0000-0x0000000004EDE000-memory.dmp

memory/3136-133-0x0000000000000000-mapping.dmp

memory/3136-134-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3136-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3136-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3136-137-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-16 05:45

Reported

2022-04-16 05:55

Platform

win7-20220414-en

Max time kernel

73s

Max time network

137s

Command Line

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

Signatures

Oski

infostealer oski

suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

suricata

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1688 set thread context of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1688 wrote to memory of 1884 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 1884 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1884 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1884 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1884 wrote to memory of 1972 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 1884 -s 768

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 osiq.icu udp
US 99.83.154.118:80 osiq.icu tcp
US 216.239.32.21:80 tcp

Files

memory/1688-54-0x0000000000A20000-0x0000000000A82000-memory.dmp

memory/1688-55-0x00000000003D0000-0x00000000003DA000-memory.dmp

memory/1688-56-0x0000000000410000-0x0000000000434000-memory.dmp

memory/1688-57-0x0000000076391000-0x0000000076393000-memory.dmp

memory/1884-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-59-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-61-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-63-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-65-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-67-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-68-0x000000000040717B-mapping.dmp

memory/1884-70-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1884-72-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1972-73-0x0000000000000000-mapping.dmp