phorphiex | 8de13f64aab532c0bbd3d38cc821ba6fa67ccfadde9cffd14944cc9d85830f4a

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12/10/2024, 05:38

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General

Target

21b61b3680c5e66f9f7b1f3026327757.exe
Size

86KB
MD5

21b61b3680c5e66f9f7b1f3026327757
SHA1

fad18744873c0f49daab677b53cea59f808c8097
SHA256

8de13f64aab532c0bbd3d38cc821ba6fa67ccfadde9cffd14944cc9d85830f4a
SHA512

0a43a48f18fa86e72c23baa71bb77e85e9bf1ca107cf014fff2b2096b65d480f0d17c516954d472f25c541bb35f196f13534b135033e3f9a52465ea221b4e745
SSDEEP

192:MNUGDWCn+rYeumelDB2JkknJxTqth7ccccccccccccccccccccccccccccccccc:AU5C+rU9lDAJnuz

Score

10^/10

phorphiex discovery evasion execution loader persistence trojan worm

Malware Config

Signatures

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Start = "4"	sysvplervcs.exe

Phorphiex payload 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000016fc9-4.dat	family_phorphiex

Phorphiex, Phorpiex
Phorphiex or Phorpiex Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.
worm trojan loader phorphiex

Windows security bypass 2 TTPs 6 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysvplervcs.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2740	powershell.exe

Downloads MZ/PE file
Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Executes dropped EXE 2 IoCs

pid	Process
2628	32083.scr
2800	sysvplervcs.exe

Loads dropped DLL 2 IoCs

pid	Process
2484	21b61b3680c5e66f9f7b1f3026327757.exe
2484	21b61b3680c5e66f9f7b1f3026327757.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysvplervcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysvplervcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Settings = "C:\\Windows\\sysvplervcs.exe"	32083.scr

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\sysvplervcs.exe	32083.scr
File opened for modification	C:\Windows\sysvplervcs.exe	32083.scr

Launches sc.exe 5 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2604	sc.exe
1380	sc.exe
688	sc.exe
1564	sc.exe
2344	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	21b61b3680c5e66f9f7b1f3026327757.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	32083.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysvplervcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2740	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2740	powershell.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2628	2484	21b61b3680c5e66f9f7b1f3026327757.exe	30
PID 2484 wrote to memory of 2628	2484	21b61b3680c5e66f9f7b1f3026327757.exe	30
PID 2484 wrote to memory of 2628	2484	21b61b3680c5e66f9f7b1f3026327757.exe	30
PID 2484 wrote to memory of 2628	2484	21b61b3680c5e66f9f7b1f3026327757.exe	30
PID 2628 wrote to memory of 2800	2628	32083.scr	31
PID 2628 wrote to memory of 2800	2628	32083.scr	31
PID 2628 wrote to memory of 2800	2628	32083.scr	31
PID 2628 wrote to memory of 2800	2628	32083.scr	31
PID 2800 wrote to memory of 2416	2800	sysvplervcs.exe	32
PID 2800 wrote to memory of 2416	2800	sysvplervcs.exe	32
PID 2800 wrote to memory of 2416	2800	sysvplervcs.exe	32
PID 2800 wrote to memory of 2416	2800	sysvplervcs.exe	32
PID 2800 wrote to memory of 2632	2800	sysvplervcs.exe	34
PID 2800 wrote to memory of 2632	2800	sysvplervcs.exe	34
PID 2800 wrote to memory of 2632	2800	sysvplervcs.exe	34
PID 2800 wrote to memory of 2632	2800	sysvplervcs.exe	34
PID 2416 wrote to memory of 2740	2416	cmd.exe	36
PID 2416 wrote to memory of 2740	2416	cmd.exe	36
PID 2416 wrote to memory of 2740	2416	cmd.exe	36
PID 2416 wrote to memory of 2740	2416	cmd.exe	36
PID 2632 wrote to memory of 688	2632	cmd.exe	37
PID 2632 wrote to memory of 688	2632	cmd.exe	37
PID 2632 wrote to memory of 688	2632	cmd.exe	37
PID 2632 wrote to memory of 688	2632	cmd.exe	37
PID 2632 wrote to memory of 1564	2632	cmd.exe	38
PID 2632 wrote to memory of 1564	2632	cmd.exe	38
PID 2632 wrote to memory of 1564	2632	cmd.exe	38
PID 2632 wrote to memory of 1564	2632	cmd.exe	38
PID 2632 wrote to memory of 2344	2632	cmd.exe	39
PID 2632 wrote to memory of 2344	2632	cmd.exe	39
PID 2632 wrote to memory of 2344	2632	cmd.exe	39
PID 2632 wrote to memory of 2344	2632	cmd.exe	39
PID 2632 wrote to memory of 2604	2632	cmd.exe	40
PID 2632 wrote to memory of 2604	2632	cmd.exe	40
PID 2632 wrote to memory of 2604	2632	cmd.exe	40
PID 2632 wrote to memory of 2604	2632	cmd.exe	40
PID 2632 wrote to memory of 1380	2632	cmd.exe	41
PID 2632 wrote to memory of 1380	2632	cmd.exe	41
PID 2632 wrote to memory of 1380	2632	cmd.exe	41
PID 2632 wrote to memory of 1380	2632	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\21b61b3680c5e66f9f7b1f3026327757.exe
"C:\Users\Admin\AppData\Local\Temp\21b61b3680c5e66f9f7b1f3026327757.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Local\Temp\32083.scr
  "C:\Users\Admin\AppData\Local\Temp\32083.scr" /S
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2628
- - C:\Windows\sysvplervcs.exe
    C:\Windows\sysvplervcs.exe
    3⤵
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Windows security modification
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath $env:windir; Add-MpPreference -ExclusionPath $env:TEMP; Add-MpPreference -ExclusionPath $env:USERPROFILE"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2416
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -Command "Add-MpPreference -ExclusionPath $env:windir; Add-MpPreference -ExclusionPath $env:TEMP; Add-MpPreference -ExclusionPath $env:USERPROFILE"
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2740
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c sc stop UsoSvc & sc stop WaaSMedicSvc & sc stop wuauserv & sc stop DoSvc & sc stop BITS /wait
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2632
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop UsoSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:688
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop WaaSMedicSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:1564
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop wuauserv
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2344
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop DoSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2604
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop BITS /wait
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:1380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\7BCOPU31\1[1]

Filesize
108KB

MD5
1fcb78fb6cf9720e9d9494c42142d885

SHA1
fef9c2e728ab9d56ce9ed28934b3182b6f1d5379

SHA256
84652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02

SHA512
cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\32083.scr

Filesize
96KB

MD5
930c41bc0c20865af61a95bcf0c3b289

SHA1
cecf37c3b6c76d9a79dd2a97cfc518621a6ac924

SHA256
1f2e9724dfb091059ae16c305601e21d64b5308df76ddef6b394573e576ef1ff

SHA512
fa1f33c71da608b3980038981220fcebee0b0cc44331e52f5198dd2761c97631ee8286756c2cc16245a1370c83bb53cc8ea8ef64e0fcdd30af51f023973986b2

Download Submit