Malware Analysis Report

2025-01-03 04:57

Sample ID 220328-wsdlbahchn
Target f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035
SHA256 f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035
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

f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035

Threat Level: Known bad

The file f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035 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 SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-03-28 18:10

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-28 18:10

Reported

2022-03-29 09:25

Platform

win7-20220311-en

Max time kernel

4294183s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 628 wrote to memory of 972 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe
PID 628 wrote to memory of 972 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe
PID 628 wrote to memory of 972 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe
PID 628 wrote to memory of 972 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe
PID 628 wrote to memory of 972 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe
PID 972 wrote to memory of 1664 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Windows\SysWOW64\WerFault.exe
PID 972 wrote to memory of 1664 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Windows\SysWOW64\WerFault.exe
PID 972 wrote to memory of 1664 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Windows\SysWOW64\WerFault.exe
PID 972 wrote to memory of 1664 N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe

"C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe"

C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe

"C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 972 -s 780

Network

Country Destination Domain Proto
US 8.8.8.8:53 darkangel.ac.ug udp
US 8.8.8.8:53 darkangel.ac.ug udp
US 8.8.8.8:53 darkangel.ac.ug udp
US 8.8.8.8:53 darkangel.ac.ug udp

Files

memory/628-56-0x0000000075B01000-0x0000000075B03000-memory.dmp

memory/972-57-0x0000000000417A8B-mapping.dmp

memory/628-58-0x0000000000290000-0x0000000000297000-memory.dmp

memory/972-60-0x0000000000400000-0x0000000000434000-memory.dmp

memory/1664-61-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-28 18:10

Reported

2022-03-29 09:28

Platform

win10v2004-20220310-en

Max time kernel

125s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe

"C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe"

C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe

"C:\Users\Admin\AppData\Local\Temp\f58f96fb0e09e7ddc4a37caa32783b675222b4b97cd08008eaa8538bacc8d035.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3708 -ip 3708

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 1320

Network

Country Destination Domain Proto
US 8.8.8.8:53 darkangel.ac.ug udp
NL 104.110.191.133:80 tcp

Files

memory/3708-136-0x0000000000000000-mapping.dmp

memory/3376-137-0x0000000000560000-0x0000000000567000-memory.dmp

memory/3708-138-0x0000000000400000-0x0000000000434000-memory.dmp