Malware Analysis Report

2025-01-03 04:55

Sample ID 220422-aabs4shcd6
Target FLP_1037850047.pdf
SHA256 a59fbc4f9903ed18c989e87bc83073b463310ffe6c90a43c53400739719d0aae
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: 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

a59fbc4f9903ed18c989e87bc83073b463310ffe6c90a43c53400739719d0aae

Threat Level: Known bad

The file FLP_1037850047.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

2022-04-22 00:00

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-22 00:00

Reported

2022-04-22 00:03

Platform

win10v2004-20220414-en

Max time kernel

132s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2008 set thread context of 3948 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

"C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe"

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3948 -ip 3948

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3948 -s 1292

Network

Country Destination Domain Proto
NL 104.110.191.140:80 tcp
NL 104.110.191.140:80 tcp
US 93.184.220.29:80 tcp
NL 13.69.109.130:443 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
NL 104.110.191.133:80 tcp
US 8.8.8.8:53 duiy.xyz udp

Files

memory/2008-130-0x0000000000590000-0x00000000005F2000-memory.dmp

memory/2008-131-0x0000000004FA0000-0x0000000005016000-memory.dmp

memory/2008-132-0x0000000005020000-0x000000000503E000-memory.dmp

memory/3948-133-0x0000000000000000-mapping.dmp

memory/3948-134-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3948-135-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3948-136-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3948-137-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-22 00:00

Reported

2022-04-22 00:02

Platform

win7-20220414-en

Max time kernel

104s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 960 set thread context of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 960 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2036 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 2032 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 960 wrote to memory of 1700 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe
PID 1700 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Windows\SysWOW64\WerFault.exe
PID 1700 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Windows\SysWOW64\WerFault.exe
PID 1700 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Windows\SysWOW64\WerFault.exe
PID 1700 wrote to memory of 1028 N/A C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

"C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe"

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Users\Admin\AppData\Local\Temp\FLP_1037850047.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 688

Network

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

Files

memory/960-54-0x00000000001D0000-0x0000000000232000-memory.dmp

memory/960-55-0x0000000000250000-0x000000000025A000-memory.dmp

memory/960-56-0x0000000000360000-0x0000000000382000-memory.dmp

memory/1700-57-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-58-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-60-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-62-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-64-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-67-0x000000000040717B-mapping.dmp

memory/1700-66-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-69-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1700-70-0x0000000075801000-0x0000000075803000-memory.dmp

memory/1700-71-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1028-72-0x0000000000000000-mapping.dmp