Malware Analysis Report

2025-05-28 15:16

Sample ID 250518-sytypsfq4z
Target 2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer
SHA256 2be5b56db72e4f911073af1911ecf4cf947f5aa66d75758443c12b33298d0aca
Tags
phorphiex discovery loader persistence trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2be5b56db72e4f911073af1911ecf4cf947f5aa66d75758443c12b33298d0aca

Threat Level: Known bad

The file 2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer was found to be: Known bad.

Malicious Activity Summary

phorphiex discovery loader persistence trojan worm

Phorphiex, Phorpiex

Phorphiex family

Phorphiex payload

Downloads MZ/PE file

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-05-18 15:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-18 15:32

Reported

2025-05-18 15:35

Platform

win10v2004-20250502-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe"

Signatures

Phorphiex family

phorphiex

Phorphiex payload

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

Phorphiex, Phorpiex

worm trojan loader phorphiex

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4C8A.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\1121332726.exe N/A
N/A N/A C:\Windows\syscrondvr.exe N/A
N/A N/A C:\Windows\syscrondvr.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Settings = "C:\\Windows\\syscrondvr.exe" C:\Users\Admin\AppData\Local\Temp\1121332726.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\syscrondvr.exe C:\Users\Admin\AppData\Local\Temp\1121332726.exe N/A
File created C:\Windows\syscrondvr.exe C:\Users\Admin\AppData\Local\Temp\1121332726.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4C8A.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\1121332726.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\syscrondvr.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2356 wrote to memory of 4700 N/A C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe C:\Users\Admin\AppData\Local\Temp\4C8A.exe
PID 2356 wrote to memory of 4700 N/A C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe C:\Users\Admin\AppData\Local\Temp\4C8A.exe
PID 2356 wrote to memory of 4700 N/A C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe C:\Users\Admin\AppData\Local\Temp\4C8A.exe
PID 4700 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\4C8A.exe C:\Users\Admin\AppData\Local\Temp\1121332726.exe
PID 4700 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\4C8A.exe C:\Users\Admin\AppData\Local\Temp\1121332726.exe
PID 4700 wrote to memory of 432 N/A C:\Users\Admin\AppData\Local\Temp\4C8A.exe C:\Users\Admin\AppData\Local\Temp\1121332726.exe
PID 432 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\1121332726.exe C:\Windows\syscrondvr.exe
PID 432 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\1121332726.exe C:\Windows\syscrondvr.exe
PID 432 wrote to memory of 1120 N/A C:\Users\Admin\AppData\Local\Temp\1121332726.exe C:\Windows\syscrondvr.exe
PID 1160 wrote to memory of 5288 N/A C:\Windows\system32\cmd.exe C:\Windows\syscrondvr.exe
PID 1160 wrote to memory of 5288 N/A C:\Windows\system32\cmd.exe C:\Windows\syscrondvr.exe
PID 1160 wrote to memory of 5288 N/A C:\Windows\system32\cmd.exe C:\Windows\syscrondvr.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe

"C:\Users\Admin\AppData\Local\Temp\2025-05-18_926e84ab7cab9801a95e6467150ea839_amadey_avoslocker_black-basta_cobalt-strike_elex_hijackloader_luca-stealer.exe"

C:\Users\Admin\AppData\Local\Temp\4C8A.exe

"C:\Users\Admin\AppData\Local\Temp\4C8A.exe"

C:\Users\Admin\AppData\Local\Temp\1121332726.exe

C:\Users\Admin\AppData\Local\Temp\1121332726.exe

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c C:\Windows\syscrondvr.exe

C:\Windows\syscrondvr.exe

C:\Windows\syscrondvr.exe

C:\Windows\syscrondvr.exe

C:\Windows\syscrondvr.exe

Network

Country Destination Domain Proto
UA 185.156.72.39:80 185.156.72.39 tcp
NL 95.101.136.223:443 www.bing.com tcp
UA 185.156.72.39:80 185.156.72.39 tcp
UA 185.156.72.39:80 185.156.72.39 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
NL 45.141.233.6:80 45.141.233.6 tcp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.178.3:80 c.pki.goog tcp
US 8.8.8.8:53 www.update.microsoft.com udp
US 20.72.235.82:80 www.update.microsoft.com tcp
RS 78.109.103.103:40500 udp
AO 102.130.192.212:40500 tcp
UZ 45.150.24.42:40500 udp
IR 89.43.225.55:40500 udp
AO 154.65.130.178:40500 udp
YE 134.35.92.29:40500 udp
MX 189.167.17.208:40500 udp
IR 89.44.147.25:40500 tcp
UZ 93.188.83.238:40500 udp
MX 187.172.1.128:40500 udp
RU 109.165.113.218:40500 udp
DZ 41.102.246.10:40500 udp
IR 2.180.98.241:40500 udp
US 89.117.254.52:40500 tcp
IR 109.125.129.99:40500 udp
IR 5.53.32.26:40500 udp
MX 187.194.169.243:40500 udp
SY 185.209.32.186:40500 udp
YE 188.240.127.246:40500 udp

Files

C:\Users\Admin\AppData\Local\Temp\4C8A.exe

MD5 0ec46393976eb51f307cc11d80bae845
SHA1 69d4cb168f3a1b97c37a0ba1519d0adb1ff7e245
SHA256 252171bdaa35d19f872c165e861b03d347a4afb85d7a03d02f8eae09d191038d
SHA512 803351760e3c422e4825103235e13085004b3418b483a2c646aafaef62b7212a1ba4ed28469134a236c5b6121e6a748ba958bbae2dbe4afe9f9f45704928d31f

C:\Users\Admin\AppData\Local\Temp\1121332726.exe

MD5 f30fdbf3448f67cbc3566f31729cb7a6
SHA1 fbf005c38f4a1c2e86817a2cb70406fc241f2c90
SHA256 81783b558904becc5b86553faba9525070de5f43339766eb1c025bcfbfe1eef8
SHA512 b428df2c8f8b4a002c8d7e1bfd9926e5cf95ee998688a2c360b8551e80be5bfbfa17ef210bea35f247da4a5c8a940fb5dba49f4786da9a74e5d001b771c8e9a8