Malware Analysis Report

2024-09-22 21:46

Sample ID 240206-grmp9safdl
Target 93fffc6736b1dd95a4f4e88734e9d540
SHA256 80b57df21ba993430e49e63e47f1afd84ac2f64fe50bb0b19413b2f964c42dd0
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

80b57df21ba993430e49e63e47f1afd84ac2f64fe50bb0b19413b2f964c42dd0

Threat Level: Known bad

The file 93fffc6736b1dd95a4f4e88734e9d540 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

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-02-06 06:02

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-06 06:02

Reported

2024-02-06 06:05

Platform

win7-20231215-en

Max time kernel

141s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2752 set thread context of 2124 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2752 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
PID 2752 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
PID 2752 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
PID 2752 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
PID 2752 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe
PID 2124 wrote to memory of 2620 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Windows\SysWOW64\WerFault.exe
PID 2124 wrote to memory of 2620 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Windows\SysWOW64\WerFault.exe
PID 2124 wrote to memory of 2620 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Windows\SysWOW64\WerFault.exe
PID 2124 wrote to memory of 2620 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe

"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"

C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe

"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 768

Network

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

Files

memory/2752-2-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2124-4-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2752-3-0x0000000000250000-0x0000000000258000-memory.dmp

memory/2124-6-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2124-8-0x00000000003B0000-0x00000000003B1000-memory.dmp

memory/2124-9-0x0000000000400000-0x0000000000434000-memory.dmp

memory/2124-11-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2124-12-0x0000000000400000-0x0000000000434000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-06 06:02

Reported

2024-02-06 06:05

Platform

win10v2004-20231215-en

Max time kernel

141s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 5100 set thread context of 2320 N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe

"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"

C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe

"C:\Users\Admin\AppData\Local\Temp\93fffc6736b1dd95a4f4e88734e9d540.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2320 -ip 2320

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 1328

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 danielmax.ac.ug udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

memory/5100-2-0x0000000077D62000-0x0000000077D63000-memory.dmp

memory/5100-3-0x0000000000A40000-0x0000000000A41000-memory.dmp

memory/5100-4-0x0000000000A50000-0x0000000000A58000-memory.dmp

memory/2320-5-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2320-6-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2320-7-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2320-9-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2320-10-0x0000000077D62000-0x0000000077D63000-memory.dmp

memory/2320-11-0x0000000002190000-0x0000000002191000-memory.dmp

memory/2320-14-0x0000000000400000-0x0000000000439000-memory.dmp

memory/2320-16-0x0000000000400000-0x0000000000434000-memory.dmp