Malware Analysis Report

2024-09-22 21:47

Sample ID 240110-gnyncsgeel
Target 2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia
SHA256 2e77a1b324229a10ce5ac15a916526eff4a1e44c291bb918d6ed5329bc56f81b
Tags
oski discovery 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

2e77a1b324229a10ce5ac15a916526eff4a1e44c291bb918d6ed5329bc56f81b

Threat Level: Known bad

The file 2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia was found to be: Known bad.

Malicious Activity Summary

oski discovery infostealer spyware stealer

Oski family

Oski

Downloads MZ/PE file

Checks computer location settings

Loads dropped DLL

Reads user/profile data of web browsers

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Kills process with taskkill

Checks processor information in registry

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-01-10 05:57

Signatures

Oski family

oski

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-10 05:57

Reported

2024-01-10 06:27

Platform

win7-20231129-en

Max time kernel

142s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe"

Signatures

Downloads MZ/PE file

Processes

C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 9entrevera.sa.com udp
AU 103.83.194.50:80 9entrevera.sa.com tcp
AU 103.83.194.50:80 9entrevera.sa.com tcp
AU 103.83.194.50:80 9entrevera.sa.com tcp
AU 103.83.194.50:80 9entrevera.sa.com tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-10 05:57

Reported

2024-01-10 06:27

Platform

win10v2004-20231215-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe"

Signatures

Oski

infostealer oski

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_karagany_mafia.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /pid 3164 & erase C:\Users\Admin\AppData\Local\Temp\2024-01-09_8c36f8a010e9781bda4076852efb05a7_ka & RD /S /Q C:\\ProgramData\\488918262702508\\* & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /pid 3164

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 6.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 9entrevera.sa.com udp
AU 103.83.194.50:80 9entrevera.sa.com tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 50.194.83.103.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
AU 103.83.194.50:80 9entrevera.sa.com tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
AU 103.83.194.50:80 9entrevera.sa.com tcp
US 8.8.8.8:53 199.111.78.13.in-addr.arpa udp

Files

C:\ProgramData\sqlite3.dll

MD5 cb3e4e15851562e13ba20fc2932997c2
SHA1 1e604837c5523e571c1856ba751e14bbf3253993
SHA256 dc2344436f412ca619f210758b8acd93e2d4e7f6cc79ec744b2e418d0de23175
SHA512 2c5cf6d03e37153083296dbee09f0b74108d80661d364592fcb96fd146536722cb36c17045106b70d38c26f74a84447969db467119141c376421772377f08d56

memory/3164-11-0x0000000060900000-0x0000000060992000-memory.dmp

C:\ProgramData\mozglue.dll

MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

C:\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66