Malware Analysis Report

2024-10-23 19:40

Sample ID 231002-bf7y6seg4z
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 01:06

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 01:06

Reported

2023-10-02 01:08

Platform

win7-20230831-en

Max time kernel

32s

Max time network

20s

Command Line

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

Signatures

Phemedrone

stealer phemedrone

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2132 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\Jefutyl.exe C:\Windows\system32\WerFault.exe
PID 2132 wrote to memory of 1712 N/A C:\Users\Admin\AppData\Local\Temp\Jefutyl.exe C:\Windows\system32\WerFault.exe
PID 2132 wrote to memory of 1712 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 2132 -s 524

Network

N/A

Files

memory/2132-0-0x0000000000C00000-0x0000000000C1C000-memory.dmp

memory/2132-1-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

memory/2132-2-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-02 01:06

Reported

2023-10-02 01:08

Platform

win10v2004-20230915-en

Max time kernel

91s

Max time network

95s

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
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
Token: SeManageVolumePrivilege N/A C:\Windows\System32\svchost.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

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k UnistackSvcGroup

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 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 126.23.238.8.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 135.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/1920-0-0x00000000003D0000-0x00000000003EC000-memory.dmp

memory/1920-1-0x00007FFA54D50000-0x00007FFA55811000-memory.dmp

memory/1920-2-0x000000001B1D0000-0x000000001B1E0000-memory.dmp

memory/1920-3-0x00007FFA54D50000-0x00007FFA55811000-memory.dmp

memory/1920-4-0x000000001B1D0000-0x000000001B1E0000-memory.dmp

memory/1920-6-0x00007FFA54D50000-0x00007FFA55811000-memory.dmp

memory/3468-7-0x000001CEC2340000-0x000001CEC2350000-memory.dmp

memory/3468-23-0x000001CEC2440000-0x000001CEC2450000-memory.dmp

memory/3468-39-0x000001CECA740000-0x000001CECA741000-memory.dmp

memory/3468-41-0x000001CECA770000-0x000001CECA771000-memory.dmp

memory/3468-42-0x000001CECA770000-0x000001CECA771000-memory.dmp

memory/3468-43-0x000001CECA880000-0x000001CECA881000-memory.dmp