Malware Analysis Report

2024-10-18 21:02

Sample ID 231222-r67n4adcfp
Target cc4bdd8e7f88763262c4634434b1dd77
SHA256 a2ae38d4b467bc8ab66ae53b28bd01365e9240b83f7f5e952d42c2aee0eae3ca
Tags
oski infostealer spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

a2ae38d4b467bc8ab66ae53b28bd01365e9240b83f7f5e952d42c2aee0eae3ca

Threat Level: Known bad

The file cc4bdd8e7f88763262c4634434b1dd77 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

2023-12-22 14:49

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 14:49

Reported

2023-12-22 18:50

Platform

win7-20231215-en

Max time kernel

117s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2992 set thread context of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2992 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2908 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 2664 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 1508 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 2992 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 3040 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Windows\SysWOW64\WerFault.exe
PID 3040 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Windows\SysWOW64\WerFault.exe
PID 3040 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Windows\SysWOW64\WerFault.exe
PID 3040 wrote to memory of 2608 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe"

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"{path}"

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3040 -s 112

Network

N/A

Files

memory/2992-1-0x00000000747F0000-0x0000000074EDE000-memory.dmp

memory/2992-0-0x0000000000250000-0x0000000000376000-memory.dmp

memory/2992-2-0x0000000000610000-0x0000000000650000-memory.dmp

memory/2992-3-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2992-4-0x00000000005B0000-0x000000000060C000-memory.dmp

memory/2992-5-0x0000000000460000-0x0000000000470000-memory.dmp

memory/2992-6-0x00000000747F0000-0x0000000074EDE000-memory.dmp

memory/2992-7-0x0000000000610000-0x0000000000650000-memory.dmp

memory/2992-8-0x0000000000750000-0x00000000007AA000-memory.dmp

memory/2992-9-0x00000000020A0000-0x00000000020D8000-memory.dmp

memory/3040-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3040-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3040-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3040-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3040-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3040-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/3040-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3040-20-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2992-21-0x00000000747F0000-0x0000000074EDE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 14:49

Reported

2023-12-22 18:50

Platform

win10v2004-20231215-en

Max time kernel

136s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe"

Signatures

Oski

infostealer oski

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4580 set thread context of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe
PID 4580 wrote to memory of 3516 N/A C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

Processes

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe"

C:\Users\Admin\AppData\Local\Temp\cc4bdd8e7f88763262c4634434b1dd77.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 3516 -ip 3516

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 1280

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
RU 176.113.82.180:80 176.113.82.180 tcp
US 8.8.8.8:53 180.82.113.176.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 178.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.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 8.8.8.8:53 178.223.142.52.in-addr.arpa udp

Files

memory/4580-1-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/4580-0-0x00000000005F0000-0x0000000000716000-memory.dmp

memory/4580-3-0x00000000029F0000-0x00000000029F1000-memory.dmp

memory/4580-2-0x00000000052A0000-0x00000000052B0000-memory.dmp

memory/4580-5-0x00000000051D0000-0x0000000005262000-memory.dmp

memory/4580-4-0x0000000005860000-0x0000000005E04000-memory.dmp

memory/4580-6-0x0000000005170000-0x000000000517A000-memory.dmp

memory/4580-7-0x0000000006820000-0x00000000068BC000-memory.dmp

memory/4580-8-0x0000000006900000-0x000000000695C000-memory.dmp

memory/4580-9-0x0000000005290000-0x00000000052A0000-memory.dmp

memory/4580-10-0x00000000750E0000-0x0000000075890000-memory.dmp

memory/4580-11-0x00000000052A0000-0x00000000052B0000-memory.dmp

memory/4580-12-0x0000000006960000-0x00000000069BA000-memory.dmp

memory/4580-13-0x0000000008F30000-0x0000000008F68000-memory.dmp

memory/3516-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3516-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3516-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/3516-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4580-19-0x00000000750E0000-0x0000000075890000-memory.dmp

C:\ProgramData\msvcp140.dll

MD5 0a3e69b8b37a6df0acd7e7f5d9d3b854
SHA1 680de96cfe2aff1b030bfbd4a7cfa2529993ea61
SHA256 0f3a07f36d6bddee418f7d7548bc165b09817e10764a359d2773388cdec9ff8a
SHA512 9c5c0679e082a5776536835110b90436cd6531e3b2c4fc7a15bdce7f550d6647447c904e68d660faf81e39c108e17198830e8b133e86d8559180fa6fb5ce25c7

memory/3516-30-0x0000000000400000-0x0000000000438000-memory.dmp