Malware Analysis Report

2024-10-23 19:40

Sample ID 231002-q5z27ach37
Target Jefutyl.exe
SHA256 58b525579968cba0c68e8f7ae12e51e0b5542acc2c14a2e75fa6df44556e373f
Tags
phemedrone stealer spyware
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

58b525579968cba0c68e8f7ae12e51e0b5542acc2c14a2e75fa6df44556e373f

Threat Level: Known bad

The file Jefutyl.exe was found to be: Known bad.

Malicious Activity Summary

phemedrone stealer spyware

Phemedrone family

Phemedrone

Reads user/profile data of web browsers

Looks up external IP address via web service

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-02 13:51

Signatures

Phemedrone family

phemedrone

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-02 13:51

Reported

2023-10-02 13:54

Platform

win7-20230831-en

Max time kernel

117s

Max time network

121s

Command Line

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

Signatures

Phemedrone

stealer phemedrone

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2244 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\Jefutyl.exe C:\Windows\system32\WerFault.exe
PID 2244 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\Jefutyl.exe C:\Windows\system32\WerFault.exe
PID 2244 wrote to memory of 2300 N/A C:\Users\Admin\AppData\Local\Temp\Jefutyl.exe C:\Windows\system32\WerFault.exe

Processes

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2244 -s 520

Network

N/A

Files

memory/2244-0-0x0000000000840000-0x000000000085C000-memory.dmp

memory/2244-1-0x000007FEF5F90000-0x000007FEF697C000-memory.dmp

memory/2244-2-0x000007FEF5F90000-0x000007FEF697C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-02 13:51

Reported

2023-10-02 13:54

Platform

win10v2004-20230915-en

Max time kernel

148s

Max time network

152s

Command Line

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

Signatures

Phemedrone

stealer phemedrone

Reads user/profile data of web browsers

spyware stealer

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

C:\Windows\system32\wbem\WmiApSrv.exe

C:\Windows\system32\wbem\WmiApSrv.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 254.211.247.8.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 167.109.18.2.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 126.23.238.8.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.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 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 252.15.104.51.in-addr.arpa udp

Files

memory/1396-0-0x0000000000440000-0x000000000045C000-memory.dmp

memory/1396-1-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp

memory/1396-2-0x000000001B220000-0x000000001B230000-memory.dmp

memory/1396-3-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp

memory/1396-4-0x000000001B220000-0x000000001B230000-memory.dmp

memory/1396-6-0x00007FFFABFA0000-0x00007FFFACA61000-memory.dmp