phorphiex | 8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
16/10/2024, 23:21

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General

Target

ff2df00e788749ba0f2ca8c29a35030c.exe
Size

74KB
MD5

ff2df00e788749ba0f2ca8c29a35030c
SHA1

9638e9861cdd6a8b5e4aad28739ebd62ab12b6a1
SHA256

8c8ef3881ab44057b4972c9112f73e334c664dace19295c5755f5a38ea6191d7
SHA512

76e3323f797e557a72be2242961829f410c17be3b7d605075c0c05676d8a0fca6d108e47fb250219da010f0ad64c92f56d8db3b6f913b7c5000591434ec253db
SSDEEP

192:H5w4ZVQffbuVBiRAljEEJxTqthTcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPcPx:H5w4ZV0G06uEuOm6S6666

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/0x003800000001506e-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\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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "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
2588	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 4 IoCs

pid	Process
2736	21900.scr
2612	sysvplervcs.exe
1792	280378893.exe
1704	2279232735.exe

Loads dropped DLL 4 IoCs

pid	Process
2892	ff2df00e788749ba0f2ca8c29a35030c.exe
2892	ff2df00e788749ba0f2ca8c29a35030c.exe
2612	sysvplervcs.exe
2612	sysvplervcs.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\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
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

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"	21900.scr

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\sysvplervcs.exe	21900.scr
File opened for modification	C:\Windows\sysvplervcs.exe	21900.scr

Launches sc.exe 5 IoCs

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

pid	Process
2608	sc.exe
2652	sc.exe
2208	sc.exe
2288	sc.exe
1904	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	powershell.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff2df00e788749ba0f2ca8c29a35030c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	21900.scr
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2588	powershell.exe
1792	280378893.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	1792	280378893.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 2892 wrote to memory of 2736	2892	ff2df00e788749ba0f2ca8c29a35030c.exe	30
PID 2892 wrote to memory of 2736	2892	ff2df00e788749ba0f2ca8c29a35030c.exe	30
PID 2892 wrote to memory of 2736	2892	ff2df00e788749ba0f2ca8c29a35030c.exe	30
PID 2892 wrote to memory of 2736	2892	ff2df00e788749ba0f2ca8c29a35030c.exe	30
PID 2736 wrote to memory of 2612	2736	21900.scr	31
PID 2736 wrote to memory of 2612	2736	21900.scr	31
PID 2736 wrote to memory of 2612	2736	21900.scr	31
PID 2736 wrote to memory of 2612	2736	21900.scr	31
PID 2612 wrote to memory of 2744	2612	sysvplervcs.exe	32
PID 2612 wrote to memory of 2744	2612	sysvplervcs.exe	32
PID 2612 wrote to memory of 2744	2612	sysvplervcs.exe	32
PID 2612 wrote to memory of 2744	2612	sysvplervcs.exe	32
PID 2612 wrote to memory of 2112	2612	sysvplervcs.exe	34
PID 2612 wrote to memory of 2112	2612	sysvplervcs.exe	34
PID 2612 wrote to memory of 2112	2612	sysvplervcs.exe	34
PID 2612 wrote to memory of 2112	2612	sysvplervcs.exe	34
PID 2744 wrote to memory of 2588	2744	cmd.exe	36
PID 2744 wrote to memory of 2588	2744	cmd.exe	36
PID 2744 wrote to memory of 2588	2744	cmd.exe	36
PID 2744 wrote to memory of 2588	2744	cmd.exe	36
PID 2112 wrote to memory of 2608	2112	cmd.exe	37
PID 2112 wrote to memory of 2608	2112	cmd.exe	37
PID 2112 wrote to memory of 2608	2112	cmd.exe	37
PID 2112 wrote to memory of 2608	2112	cmd.exe	37
PID 2112 wrote to memory of 2652	2112	cmd.exe	38
PID 2112 wrote to memory of 2652	2112	cmd.exe	38
PID 2112 wrote to memory of 2652	2112	cmd.exe	38
PID 2112 wrote to memory of 2652	2112	cmd.exe	38
PID 2112 wrote to memory of 2208	2112	cmd.exe	39
PID 2112 wrote to memory of 2208	2112	cmd.exe	39
PID 2112 wrote to memory of 2208	2112	cmd.exe	39
PID 2112 wrote to memory of 2208	2112	cmd.exe	39
PID 2112 wrote to memory of 2288	2112	cmd.exe	40
PID 2112 wrote to memory of 2288	2112	cmd.exe	40
PID 2112 wrote to memory of 2288	2112	cmd.exe	40
PID 2112 wrote to memory of 2288	2112	cmd.exe	40
PID 2112 wrote to memory of 1904	2112	cmd.exe	41
PID 2112 wrote to memory of 1904	2112	cmd.exe	41
PID 2112 wrote to memory of 1904	2112	cmd.exe	41
PID 2112 wrote to memory of 1904	2112	cmd.exe	41
PID 2612 wrote to memory of 1792	2612	sysvplervcs.exe	44
PID 2612 wrote to memory of 1792	2612	sysvplervcs.exe	44
PID 2612 wrote to memory of 1792	2612	sysvplervcs.exe	44
PID 2612 wrote to memory of 1792	2612	sysvplervcs.exe	44
PID 1792 wrote to memory of 3020	1792	280378893.exe	45
PID 1792 wrote to memory of 3020	1792	280378893.exe	45
PID 1792 wrote to memory of 3020	1792	280378893.exe	45
PID 1792 wrote to memory of 2448	1792	280378893.exe	47
PID 1792 wrote to memory of 2448	1792	280378893.exe	47
PID 1792 wrote to memory of 2448	1792	280378893.exe	47
PID 3020 wrote to memory of 2152	3020	cmd.exe	49
PID 3020 wrote to memory of 2152	3020	cmd.exe	49
PID 3020 wrote to memory of 2152	3020	cmd.exe	49
PID 2448 wrote to memory of 1344	2448	cmd.exe	50
PID 2448 wrote to memory of 1344	2448	cmd.exe	50
PID 2448 wrote to memory of 1344	2448	cmd.exe	50
PID 2612 wrote to memory of 1704	2612	sysvplervcs.exe	51
PID 2612 wrote to memory of 1704	2612	sysvplervcs.exe	51
PID 2612 wrote to memory of 1704	2612	sysvplervcs.exe	51
PID 2612 wrote to memory of 1704	2612	sysvplervcs.exe	51

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\ff2df00e788749ba0f2ca8c29a35030c.exe
"C:\Users\Admin\AppData\Local\Temp\ff2df00e788749ba0f2ca8c29a35030c.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2892
- C:\Users\Admin\AppData\Local\Temp\21900.scr
  "C:\Users\Admin\AppData\Local\Temp\21900.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:2736
- - C:\Windows\sysvplervcs.exe
    C:\Windows\sysvplervcs.exe
    3⤵
    - Modifies security service
    - Windows security bypass
    - Executes dropped EXE
    - Loads dropped DLL
    - Windows security modification
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2612
  - - 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:2744
    - - 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:2588
  - - 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:2112
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop UsoSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2608
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop WaaSMedicSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2652
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop wuauserv
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2208
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop DoSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2288
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop BITS /wait
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:1904
  - - C:\Users\Admin\AppData\Local\Temp\280378893.exe
      C:\Users\Admin\AppData\Local\Temp\280378893.exe
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1792
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3020
      - C:\Windows\system32\reg.exe
        
        reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
        6⤵
        
        PID:2152
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2448
      - C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "Windows Upgrade Manager"
        6⤵
        
        PID:1344
  - - C:\Users\Admin\AppData\Local\Temp\2279232735.exe
      C:\Users\Admin\AppData\Local\Temp\2279232735.exe
      4⤵
      Executes dropped EXE
      PID:1704

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8452S9S3\1[1]

Filesize
108KB

MD5
1fcb78fb6cf9720e9d9494c42142d885

SHA1
fef9c2e728ab9d56ce9ed28934b3182b6f1d5379

SHA256
84652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02

SHA512
cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\21900.scr

Filesize
96KB

MD5
930c41bc0c20865af61a95bcf0c3b289

SHA1
cecf37c3b6c76d9a79dd2a97cfc518621a6ac924

SHA256
1f2e9724dfb091059ae16c305601e21d64b5308df76ddef6b394573e576ef1ff

SHA512
fa1f33c71da608b3980038981220fcebee0b0cc44331e52f5198dd2761c97631ee8286756c2cc16245a1370c83bb53cc8ea8ef64e0fcdd30af51f023973986b2

Download Submit
\Users\Admin\AppData\Local\Temp\2279232735.exe

Filesize
15KB

MD5
0c37ee292fec32dba0420e6c94224e28

SHA1
012cbdddaddab319a4b3ae2968b42950e929c46b

SHA256
981d724feebc36777e99513dc061d1f009e589f965c920797285c46d863060d1

SHA512
2b60b571c55d0441ba0cfc695f9db5cd12660ebec7effc7e893c3b7a1c6cb6149df487c31b8d748697e260cbc4af29331592b705ea9638f64a711c7a6164628b

Download Submit
\Users\Admin\AppData\Local\Temp\280378893.exe

Filesize
8KB

MD5
cb8420e681f68db1bad5ed24e7b22114

SHA1
416fc65d538d3622f5ca71c667a11df88a927c31

SHA256
5850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea

SHA512
baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf

Download Submit
memory/1792-42-0x000000013F4B0000-0x000000013F4B6000-memory.dmp

Filesize
24KB

Download