Malware Analysis Report

2025-05-28 15:16

Sample ID 250517-bxr92sdm2z
Target 2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom
SHA256 773b5c2b76ce8a99ae3adce83ef0f41bfbde8ba0d45068c27762cf58001cd6cf
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

773b5c2b76ce8a99ae3adce83ef0f41bfbde8ba0d45068c27762cf58001cd6cf

Threat Level: Known bad

The file 2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom was found to be: Known bad.

Malicious Activity Summary

phorphiex discovery loader persistence trojan worm

Phorphiex payload

Phorphiex, Phorpiex

Phorphiex family

Downloads MZ/PE file

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-05-17 01:31

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-17 01:31

Reported

2025-05-17 01:34

Platform

win10v2004-20250502-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom.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\6DAE.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\2050224551.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\2050224551.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\2050224551.exe N/A
File created C:\Windows\syscrondvr.exe C:\Users\Admin\AppData\Local\Temp\2050224551.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\2050224551.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\6DAE.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3352 wrote to memory of 372 N/A C:\Users\Admin\AppData\Local\Temp\2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom.exe C:\Users\Admin\AppData\Local\Temp\6DAE.exe
PID 3352 wrote to memory of 372 N/A C:\Users\Admin\AppData\Local\Temp\2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom.exe C:\Users\Admin\AppData\Local\Temp\6DAE.exe
PID 3352 wrote to memory of 372 N/A C:\Users\Admin\AppData\Local\Temp\2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom.exe C:\Users\Admin\AppData\Local\Temp\6DAE.exe
PID 372 wrote to memory of 4688 N/A C:\Users\Admin\AppData\Local\Temp\6DAE.exe C:\Users\Admin\AppData\Local\Temp\2050224551.exe
PID 372 wrote to memory of 4688 N/A C:\Users\Admin\AppData\Local\Temp\6DAE.exe C:\Users\Admin\AppData\Local\Temp\2050224551.exe
PID 372 wrote to memory of 4688 N/A C:\Users\Admin\AppData\Local\Temp\6DAE.exe C:\Users\Admin\AppData\Local\Temp\2050224551.exe
PID 4688 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\2050224551.exe C:\Windows\syscrondvr.exe
PID 4688 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\2050224551.exe C:\Windows\syscrondvr.exe
PID 4688 wrote to memory of 4604 N/A C:\Users\Admin\AppData\Local\Temp\2050224551.exe C:\Windows\syscrondvr.exe
PID 4160 wrote to memory of 2404 N/A C:\Windows\system32\cmd.exe C:\Windows\syscrondvr.exe
PID 4160 wrote to memory of 2404 N/A C:\Windows\system32\cmd.exe C:\Windows\syscrondvr.exe
PID 4160 wrote to memory of 2404 N/A C:\Windows\system32\cmd.exe C:\Windows\syscrondvr.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom.exe

"C:\Users\Admin\AppData\Local\Temp\2025-05-17_f936b71b36c967991bfb3a3f70498301_black-basta_cobalt-strike_hijackloader_satacom.exe"

C:\Users\Admin\AppData\Local\Temp\6DAE.exe

"C:\Users\Admin\AppData\Local\Temp\6DAE.exe"

C:\Users\Admin\AppData\Local\Temp\2050224551.exe

C:\Users\Admin\AppData\Local\Temp\2050224551.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
GB 2.18.27.76:443 www.bing.com tcp
GB 2.18.27.76:443 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 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 www.update.microsoft.com udp
US 20.109.209.108:80 www.update.microsoft.com tcp
IR 212.120.201.116:40500 udp
IR 46.100.5.20:40500 tcp
IR 31.25.131.226:40500 udp
IR 2.190.241.242:40500 udp
IN 134.35.224.8:40500 udp
RU 37.19.50.57:40500 udp
KZ 5.76.159.105:40500 udp
EG 196.130.206.164:40500 tcp
SY 185.172.239.236:40500 udp
RU 89.232.86.84:40500 udp
RU 178.35.64.113:40500 udp
PK 39.46.179.26:40500 udp
MX 187.235.218.10:40500 udp
IR 2.182.181.180:40500 tcp
KZ 178.89.16.200:40500 udp
IR 37.254.42.168:40500 udp
IR 2.190.132.186:40500 udp
IQ 89.35.132.112:40500 udp
MX 187.194.169.243:40500 udp

Files

C:\Users\Admin\AppData\Local\Temp\6DAE.exe

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

C:\Users\Admin\AppData\Local\Temp\2050224551.exe

MD5 f30fdbf3448f67cbc3566f31729cb7a6
SHA1 fbf005c38f4a1c2e86817a2cb70406fc241f2c90
SHA256 81783b558904becc5b86553faba9525070de5f43339766eb1c025bcfbfe1eef8
SHA512 b428df2c8f8b4a002c8d7e1bfd9926e5cf95ee998688a2c360b8551e80be5bfbfa17ef210bea35f247da4a5c8a940fb5dba49f4786da9a74e5d001b771c8e9a8