Malware Analysis Report

2025-04-13 20:57

Sample ID 250321-3dy22awry5
Target Dexytyb.exe
SHA256 edbafdfc5daf3edb477b52fd1aa2376b96a9f08f9a76c1d1a9a686f303742168
Tags
phemedrone credential_access spyware stealer
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

edbafdfc5daf3edb477b52fd1aa2376b96a9f08f9a76c1d1a9a686f303742168

Threat Level: Known bad

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

Malicious Activity Summary

phemedrone credential_access spyware stealer

Phemedrone family

Phemedrone

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Unsecured Credentials: Credentials In Files

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-21 23:24

Signatures

Phemedrone family

phemedrone

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-21 23:24

Reported

2025-03-21 23:27

Platform

win7-20250207-en

Max time kernel

117s

Max time network

118s

Command Line

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

Signatures

Phemedrone

stealer phemedrone

Phemedrone family

phemedrone

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Dexytyb.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskmgr.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A
N/A N/A C:\Windows\system32\taskmgr.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2160 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\Dexytyb.exe C:\Windows\system32\WerFault.exe
PID 2160 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\Dexytyb.exe C:\Windows\system32\WerFault.exe
PID 2160 wrote to memory of 2976 N/A C:\Users\Admin\AppData\Local\Temp\Dexytyb.exe C:\Windows\system32\WerFault.exe

Processes

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2160 -s 1672

C:\Windows\system32\taskmgr.exe

"C:\Windows\system32\taskmgr.exe" /4

Network

Country Destination Domain Proto
US 8.8.8.8:53 get.geojs.io udp
US 104.26.0.100:443 get.geojs.io tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp

Files

memory/2160-0-0x000007FEF5D83000-0x000007FEF5D84000-memory.dmp

memory/2160-1-0x0000000000DB0000-0x0000000000DD4000-memory.dmp

memory/2160-2-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

memory/2160-3-0x000007FEF5D80000-0x000007FEF676C000-memory.dmp

memory/1696-4-0x0000000140000000-0x00000001405E8000-memory.dmp

memory/1696-5-0x0000000140000000-0x00000001405E8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-03-21 23:24

Reported

2025-03-21 23:27

Platform

win10v2004-20250314-en

Max time kernel

106s

Max time network

141s

Command Line

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

Signatures

Phemedrone

stealer phemedrone

Phemedrone family

phemedrone

Reads user/profile data of web browsers

spyware stealer

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.180.3:80 c.pki.goog tcp

Files

memory/6036-1-0x0000000000E70000-0x0000000000E94000-memory.dmp

memory/6036-0-0x00007FF8DB853000-0x00007FF8DB855000-memory.dmp

memory/6036-2-0x00007FF8DB850000-0x00007FF8DC311000-memory.dmp

memory/6036-3-0x00007FF8DB850000-0x00007FF8DC311000-memory.dmp