Malware Analysis Report

2025-01-03 04:58

Sample ID 220419-ex1szabgcj
Target FLP_5012_306_171.exe
SHA256 7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918
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

7376932014797e4b7f5a1c4776d865e1ba03cba69d9811f11a449c188157c918

Threat Level: Known bad

The file FLP_5012_306_171.exe 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

2022-04-19 04:19

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-19 04:19

Reported

2022-04-19 04:25

Platform

win7-20220414-en

Max time kernel

101s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 880 set thread context of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 880 wrote to memory of 1528 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe
PID 1528 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe
PID 1528 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe
PID 1528 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe
PID 1528 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 256

Network

Country Destination Domain Proto
US 8.8.8.8:53 5azc.xyz udp

Files

memory/880-54-0x0000000001330000-0x0000000001392000-memory.dmp

memory/880-55-0x0000000000360000-0x000000000036A000-memory.dmp

memory/880-56-0x0000000000410000-0x0000000000436000-memory.dmp

memory/1528-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-64-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-66-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-67-0x000000000040717B-mapping.dmp

memory/1528-69-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1528-70-0x0000000075711000-0x0000000075713000-memory.dmp

memory/1528-71-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1632-72-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-19 04:19

Reported

2022-04-19 04:26

Platform

win10v2004-20220414-en

Max time kernel

136s

Max time network

177s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4320 set thread context of 1332 N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

"C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe"

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Users\Admin\AppData\Local\Temp\FLP_5012_306_171.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1332 -ip 1332

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 1292

Network

Country Destination Domain Proto
NL 20.190.160.73:443 tcp
NL 20.190.160.129:443 tcp
US 8.238.111.254:80 tcp
GB 51.105.71.136:443 tcp
NL 20.190.160.132:443 tcp
US 8.238.111.254:80 tcp
US 8.238.111.254:80 tcp
US 8.238.111.254:80 tcp
NL 20.190.160.69:443 tcp
US 93.184.220.29:80 tcp
US 204.79.197.203:80 tcp
NL 20.190.160.8:443 tcp
US 8.8.8.8:53 5azc.xyz udp
NL 20.190.160.4:443 tcp

Files

memory/4320-130-0x0000000000530000-0x0000000000592000-memory.dmp

memory/4320-131-0x0000000004F30000-0x0000000004FA6000-memory.dmp

memory/4320-132-0x0000000004F00000-0x0000000004F1E000-memory.dmp

memory/1332-133-0x0000000000000000-mapping.dmp

memory/1332-134-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1332-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1332-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1332-137-0x0000000000400000-0x0000000000438000-memory.dmp