Malware Analysis Report

2025-01-03 04:55

Sample ID 220421-x429gsfff2
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 behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-21 19:25

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-21 19:25

Reported

2022-04-21 19:30

Platform

win7-20220414-en

Max time kernel

88s

Max time network

153s

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 316 set thread context of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 316 wrote to memory of 1624 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 1624 wrote to memory of 1496 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1624 wrote to memory of 1496 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1624 wrote to memory of 1496 N/A C:\Users\Admin\AppData\Local\Temp\IMG_106_680_74_80.exe C:\Windows\SysWOW64\WerFault.exe
PID 1624 wrote to memory of 1496 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 1624 -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
US 99.83.154.118:80 osiq.icu tcp
US 67.27.130.254:80 tcp

Files

memory/316-54-0x0000000000E10000-0x0000000000E72000-memory.dmp

memory/316-55-0x0000000000230000-0x000000000023A000-memory.dmp

memory/316-56-0x00000000002A0000-0x00000000002C4000-memory.dmp

memory/1624-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-64-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-66-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-67-0x000000000040717B-mapping.dmp

memory/1624-69-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1624-70-0x00000000769D1000-0x00000000769D3000-memory.dmp

memory/1624-71-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1496-72-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-21 19:25

Reported

2022-04-21 19:30

Platform

win10v2004-20220414-en

Max time kernel

156s

Max time network

160s

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 532 set thread context of 4892 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 408 -p 4892 -ip 4892

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1336

Network

Country Destination Domain Proto
US 93.184.220.29:80 tcp
IE 20.50.73.9:443 tcp
US 8.8.8.8:53 176.122.125.40.in-addr.arpa udp
BE 8.238.110.126:80 tcp
US 204.79.197.203:80 tcp
BE 8.238.110.126:80 tcp
US 8.8.8.8:53 0.e.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.4.0.c.0.0.3.0.1.3.0.6.2.ip6.arpa udp
US 8.8.8.8:53 osiq.icu udp
US 99.83.154.118:80 osiq.icu tcp

Files

memory/532-130-0x0000000000E50000-0x0000000000EB2000-memory.dmp

memory/532-131-0x0000000003490000-0x0000000003506000-memory.dmp

memory/532-132-0x00000000033C0000-0x00000000033DE000-memory.dmp

memory/4892-133-0x0000000000000000-mapping.dmp

memory/4892-134-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4892-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4892-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4892-137-0x0000000000400000-0x0000000000438000-memory.dmp