Malware Analysis Report

2024-09-22 21:47

Sample ID 240101-gfqmsafcc9
Target 3c0aae14c733b8f3b5f15d3f066e343d
SHA256 fd16c60e634e807f6bbb7c3e6e12a4231b7b34851eb98d6da2f178b6125c536f
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

fd16c60e634e807f6bbb7c3e6e12a4231b7b34851eb98d6da2f178b6125c536f

Threat Level: Known bad

The file 3c0aae14c733b8f3b5f15d3f066e343d 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 behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-01-01 05:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-01 05:45

Reported

2024-01-11 00:56

Platform

win7-20231215-en

Max time kernel

74s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1752 set thread context of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1752 wrote to memory of 1524 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1524 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1524 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1524 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2168 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2168 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2168 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2168 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 2684 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1752 wrote to memory of 1172 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 772

Network

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

Files

memory/1752-1-0x00000000741E0000-0x00000000748CE000-memory.dmp

memory/1752-0-0x0000000000970000-0x0000000000A88000-memory.dmp

memory/1752-2-0x0000000004870000-0x00000000048B0000-memory.dmp

memory/1752-3-0x0000000000500000-0x000000000051E000-memory.dmp

memory/1752-4-0x00000000741E0000-0x00000000748CE000-memory.dmp

memory/1752-5-0x0000000004870000-0x00000000048B0000-memory.dmp

memory/1752-6-0x00000000008C0000-0x0000000000960000-memory.dmp

memory/1752-7-0x00000000050A0000-0x00000000050D8000-memory.dmp

memory/1172-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-24-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1752-23-0x00000000741E0000-0x00000000748CE000-memory.dmp

memory/1172-22-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1172-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1172-26-0x0000000000400000-0x0000000000438000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-01 05:45

Reported

2024-01-11 00:57

Platform

win10v2004-20231222-en

Max time kernel

115s

Max time network

129s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1748 set thread context of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe
PID 1748 wrote to memory of 1100 N/A C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

Processes

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe

"C:\Users\Admin\AppData\Local\Temp\3c0aae14c733b8f3b5f15d3f066e343d.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1100 -ip 1100

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1100 -s 1324

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 19.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 udp
N/A 96.16.110.41:443 tcp
N/A 20.73.194.208:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 udp
N/A 20.73.194.208:443 tcp
N/A 20.73.194.208:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 42.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 kckark.xyz 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 43.58.199.20.in-addr.arpa udp

Files

memory/1748-0-0x0000000000900000-0x0000000000A18000-memory.dmp

memory/1748-2-0x00000000053D0000-0x000000000546C000-memory.dmp

memory/1748-3-0x0000000005A80000-0x0000000006024000-memory.dmp

memory/1748-4-0x0000000005570000-0x0000000005602000-memory.dmp

memory/1748-7-0x0000000005700000-0x0000000005756000-memory.dmp

memory/1748-6-0x00000000054A0000-0x00000000054AA000-memory.dmp

memory/1748-5-0x0000000005770000-0x0000000005780000-memory.dmp

memory/1748-1-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/1748-8-0x0000000004E10000-0x0000000004E2E000-memory.dmp

memory/1748-9-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/1748-10-0x0000000005770000-0x0000000005780000-memory.dmp

memory/1748-11-0x00000000080E0000-0x0000000008180000-memory.dmp

memory/1748-12-0x000000000A560000-0x000000000A598000-memory.dmp

memory/1748-18-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/1100-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1100-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1100-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1100-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1100-21-0x0000000000400000-0x0000000000438000-memory.dmp