Malware Analysis Report

2024-09-22 21:51

Sample ID 240129-wdvw2sghfq
Target 807a927252237ee6436724cbbcd05fa0
SHA256 a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
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

a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5

Threat Level: Known bad

The file 807a927252237ee6436724cbbcd05fa0 was found to be: Known bad.

Malicious Activity Summary

oski infostealer spyware stealer

Oski

Reads user/profile data of web browsers

Checks computer location settings

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-01-29 17:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-29 17:48

Reported

2024-01-29 17:51

Platform

win7-20231129-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe"

Signatures

Oski

infostealer oski

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2152 set thread context of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2152 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 2152 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 2152 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 2152 wrote to memory of 2700 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2152 wrote to memory of 2732 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 2732 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\WerFault.exe
PID 2732 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\WerFault.exe
PID 2732 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\WerFault.exe
PID 2732 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

"C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8BFA.tmp"

C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2732 -s 112

Network

N/A

Files

memory/2152-0-0x0000000001110000-0x00000000011CC000-memory.dmp

memory/2152-1-0x00000000749F0000-0x00000000750DE000-memory.dmp

memory/2152-2-0x0000000001010000-0x0000000001050000-memory.dmp

memory/2152-3-0x00000000005C0000-0x00000000005C8000-memory.dmp

memory/2152-4-0x00000000749F0000-0x00000000750DE000-memory.dmp

memory/2152-5-0x0000000001010000-0x0000000001050000-memory.dmp

memory/2152-6-0x0000000004F60000-0x0000000004FE2000-memory.dmp

memory/2152-7-0x0000000000BA0000-0x0000000000BDC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp8BFA.tmp

MD5 61874bb60b19943ff29b8cbac09e01e1
SHA1 2bd190af9062bc7d38d5f6be5a66ede05fdb163c
SHA256 e08a2f15c59f3cc3902466dfa64a5c3b113fad316cd6e8cb16dfa036caec37be
SHA512 9409133e0619779e68300d67d6c8745e91b9882e61b8125f38e44843759d3caa62ccb6671fb617657fcd31bb406d086f6a319cba0c6af2d6cd3eebeb9bb01166

memory/2732-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2732-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2732-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2732-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2732-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2732-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2732-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2732-23-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2152-24-0x00000000749F0000-0x00000000750DE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-29 17:48

Reported

2024-01-29 17:51

Platform

win10v2004-20231215-en

Max time kernel

105s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe"

Signatures

Oski

infostealer oski

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe N/A

Reads user/profile data of web browsers

spyware stealer

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4160 set thread context of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4160 wrote to memory of 456 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 4160 wrote to memory of 456 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 4160 wrote to memory of 456 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Windows\SysWOW64\schtasks.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe
PID 4160 wrote to memory of 5092 N/A C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

Processes

C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

"C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rFmqUFUNsPfqc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB6E.tmp"

C:\Users\Admin\AppData\Local\Temp\807a927252237ee6436724cbbcd05fa0.exe

"{path}"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5092 -ip 5092

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 1312

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 zau.divendesign.in udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 190.178.17.96.in-addr.arpa udp

Files

memory/4160-0-0x00000000007D0000-0x000000000088C000-memory.dmp

memory/4160-1-0x0000000074BA0000-0x0000000075350000-memory.dmp

memory/4160-2-0x00000000052D0000-0x00000000052E0000-memory.dmp

memory/4160-4-0x0000000005450000-0x00000000054EC000-memory.dmp

memory/4160-5-0x00000000054F0000-0x0000000005582000-memory.dmp

memory/4160-3-0x0000000002D80000-0x0000000002D88000-memory.dmp

memory/4160-6-0x0000000074BA0000-0x0000000075350000-memory.dmp

memory/4160-7-0x00000000052D0000-0x00000000052E0000-memory.dmp

memory/4160-8-0x0000000005C80000-0x0000000005D02000-memory.dmp

memory/4160-9-0x0000000005B40000-0x0000000005B7C000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpCB6E.tmp

MD5 fd82f54536607ad7911da8877b3748da
SHA1 325f1ebe80bc0cd494fef898f226e3cac5873ff0
SHA256 dd9eaa611535ca5fcb246dfd94214fc34c3fd13be6616ab5e44ed4762c3514c0
SHA512 fc6ae634c296f64505713dc7a049b0969d1205504c04dffebfe135a55d3429331e798703309a5f1a0cb5609b4cc19ce6eae575c38d7d2d89cf60bcd6f71df870

memory/5092-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/5092-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/5092-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/5092-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4160-18-0x0000000074BA0000-0x0000000075350000-memory.dmp

memory/5092-21-0x0000000000400000-0x0000000000438000-memory.dmp