Malware Analysis Report

2024-09-22 21:54

Sample ID 240314-xtgj2ace2t
Target c9626ce54f97b0bc2270eb091952ea53
SHA256 c76856f53bc950964cb30f0b48e80964b5162660608794d25ee919ce795796ba
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

c76856f53bc950964cb30f0b48e80964b5162660608794d25ee919ce795796ba

Threat Level: Known bad

The file c9626ce54f97b0bc2270eb091952ea53 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

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-03-14 19:08

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-14 19:08

Reported

2024-03-14 19:11

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3412 set thread context of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 3412 wrote to memory of 1124 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

"C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe"

C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

"C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1124 -ip 1124

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 1304

Network

Country Destination Domain Proto
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 81.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 try.divendesign.in udp
US 8.8.8.8:53 45.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 74.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 60.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp

Files

memory/3412-0-0x0000000000AC0000-0x0000000000B78000-memory.dmp

memory/3412-1-0x0000000074F00000-0x00000000756B0000-memory.dmp

memory/3412-2-0x0000000007FB0000-0x0000000008554000-memory.dmp

memory/3412-3-0x0000000007AA0000-0x0000000007B32000-memory.dmp

memory/3412-4-0x0000000007B40000-0x0000000007BDC000-memory.dmp

memory/3412-5-0x0000000007A10000-0x0000000007A20000-memory.dmp

memory/3412-6-0x0000000007A50000-0x0000000007A5A000-memory.dmp

memory/3412-7-0x0000000002E20000-0x0000000002E38000-memory.dmp

memory/3412-8-0x0000000074F00000-0x00000000756B0000-memory.dmp

memory/3412-9-0x0000000007A10000-0x0000000007A20000-memory.dmp

memory/3412-10-0x0000000009010000-0x00000000090BA000-memory.dmp

memory/3412-11-0x0000000006690000-0x00000000066D0000-memory.dmp

memory/1124-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1124-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1124-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1124-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3412-17-0x0000000074F00000-0x00000000756B0000-memory.dmp

memory/1124-20-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-14 19:08

Reported

2024-03-14 19:11

Platform

win7-20240221-en

Max time kernel

119s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2168 set thread context of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2168 wrote to memory of 2712 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe
PID 2712 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Windows\SysWOW64\WerFault.exe
PID 2712 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Windows\SysWOW64\WerFault.exe
PID 2712 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Windows\SysWOW64\WerFault.exe
PID 2712 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

"C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe"

C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe

"C:\Users\Admin\AppData\Local\Temp\c9626ce54f97b0bc2270eb091952ea53.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 112

Network

N/A

Files

memory/2168-0-0x0000000000F80000-0x0000000001038000-memory.dmp

memory/2168-1-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/2168-2-0x0000000000C50000-0x0000000000C90000-memory.dmp

memory/2168-3-0x0000000000320000-0x0000000000338000-memory.dmp

memory/2168-4-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/2168-5-0x0000000000C50000-0x0000000000C90000-memory.dmp

memory/2168-6-0x000000000A560000-0x000000000A60A000-memory.dmp

memory/2168-7-0x0000000000570000-0x00000000005B0000-memory.dmp

memory/2712-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2712-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2712-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2712-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2712-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2712-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2712-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2168-21-0x0000000073EC0000-0x00000000745AE000-memory.dmp

memory/2712-20-0x0000000000400000-0x0000000000438000-memory.dmp