Malware Analysis Report

2024-09-22 21:55

Sample ID 240707-zp5geayakr
Target 2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia
SHA256 6d575812a701f3cbf081873989914976287e46a9cc8d732bd83ac7f6944ceb98
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

6d575812a701f3cbf081873989914976287e46a9cc8d732bd83ac7f6944ceb98

Threat Level: Known bad

The file 2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia was found to be: Known bad.

Malicious Activity Summary

oski discovery infostealer spyware stealer

Oski

Oski family

Downloads MZ/PE file

Loads dropped DLL

Checks computer location settings

Reads user/profile data of web browsers

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-07 20:54

Signatures

Oski family

oski

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-07 20:54

Reported

2024-07-07 20:57

Platform

win7-20240704-en

Max time kernel

122s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia.exe"

Signatures

Oski

infostealer oski

Downloads MZ/PE file

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\2024-07-07_7104e2ade44c390cb87033f2249b0c97_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\2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /pid 2084 & erase C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_ka' & RD /S /Q C:\\ProgramData\\435392520716307\\* & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /pid 2084

Network

Country Destination Domain Proto
US 8.8.8.8:53 oski.x0a2.com udp
US 195.179.236.200:80 oski.x0a2.com tcp

Files

\ProgramData\sqlite3.dll

MD5 e477a96c8f2b18d6b5c27bde49c990bf
SHA1 e980c9bf41330d1e5bd04556db4646a0210f7409
SHA256 16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512 335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

\ProgramData\mozglue.dll

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

\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-07 20:54

Reported

2024-07-07 21:06

Platform

win10v2004-20240704-en

Max time kernel

124s

Max time network

134s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_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-1-5-21-661257284-3186977026-4220467887-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_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\2024-07-07_7104e2ade44c390cb87033f2249b0c97_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\2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia.exe

"C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_karagany_mafia.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4588,i,12101950716832706950,8384629015980369538,262144 --variations-seed-version --mojo-platform-channel-handle=4508 /prefetch:8

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /pid 4788 & erase C:\Users\Admin\AppData\Local\Temp\2024-07-07_7104e2ade44c390cb87033f2249b0c97_ka & RD /S /Q C:\\ProgramData\\330925909120130\\* & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /pid 4788

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 oski.x0a2.com udp
US 195.179.236.200:80 oski.x0a2.com tcp
US 8.8.8.8:53 200.236.179.195.in-addr.arpa udp
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 8.8.8.8:53 147.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 233.143.123.92.in-addr.arpa udp

Files

C:\ProgramData\sqlite3.dll

MD5 e477a96c8f2b18d6b5c27bde49c990bf
SHA1 e980c9bf41330d1e5bd04556db4646a0210f7409
SHA256 16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512 335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

memory/4788-11-0x0000000060900000-0x0000000060992000-memory.dmp

C:\ProgramData\nss3.dll

MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

C:\ProgramData\mozglue.dll

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