phorphiex | 8de13f64aab532c0bbd3d38cc821ba6fa67ccfadde9cffd14944cc9d85830f4a

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
behavioral2/files/0x000c000000023b80-4.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\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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "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
4968	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

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	21b61b3680c5e66f9f7b1f3026327757.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	sysvplervcs.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	779113501.exe

Executes dropped EXE 4 IoCs

pid	Process
1948	14551.scr
1868	sysvplervcs.exe
4964	779113501.exe
4864	250884562.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\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
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

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"	14551.scr

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\sysvplervcs.exe	14551.scr
File opened for modification	C:\Windows\sysvplervcs.exe	14551.scr

Launches sc.exe 5 IoCs

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

pid	Process
4964	sc.exe
3292	sc.exe
3664	sc.exe
2112	sc.exe
4552	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 12 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	sysvplervcs.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	250884562.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	14551.scr
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 3 IoCs

pid	Process
4968	powershell.exe
4968	powershell.exe
4964	779113501.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4968	powershell.exe
Token: SeDebugPrivilege	4964	779113501.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 1948	1196	21b61b3680c5e66f9f7b1f3026327757.exe	86
PID 1196 wrote to memory of 1948	1196	21b61b3680c5e66f9f7b1f3026327757.exe	86
PID 1196 wrote to memory of 1948	1196	21b61b3680c5e66f9f7b1f3026327757.exe	86
PID 1948 wrote to memory of 1868	1948	14551.scr	87
PID 1948 wrote to memory of 1868	1948	14551.scr	87
PID 1948 wrote to memory of 1868	1948	14551.scr	87
PID 1868 wrote to memory of 1388	1868	sysvplervcs.exe	88
PID 1868 wrote to memory of 1388	1868	sysvplervcs.exe	88
PID 1868 wrote to memory of 1388	1868	sysvplervcs.exe	88
PID 1868 wrote to memory of 1984	1868	sysvplervcs.exe	89
PID 1868 wrote to memory of 1984	1868	sysvplervcs.exe	89
PID 1868 wrote to memory of 1984	1868	sysvplervcs.exe	89
PID 1984 wrote to memory of 4964	1984	cmd.exe	93
PID 1984 wrote to memory of 4964	1984	cmd.exe	93
PID 1984 wrote to memory of 4964	1984	cmd.exe	93
PID 1388 wrote to memory of 4968	1388	cmd.exe	92
PID 1388 wrote to memory of 4968	1388	cmd.exe	92
PID 1388 wrote to memory of 4968	1388	cmd.exe	92
PID 1984 wrote to memory of 3292	1984	cmd.exe	94
PID 1984 wrote to memory of 3292	1984	cmd.exe	94
PID 1984 wrote to memory of 3292	1984	cmd.exe	94
PID 1984 wrote to memory of 3664	1984	cmd.exe	95
PID 1984 wrote to memory of 3664	1984	cmd.exe	95
PID 1984 wrote to memory of 3664	1984	cmd.exe	95
PID 1984 wrote to memory of 2112	1984	cmd.exe	96
PID 1984 wrote to memory of 2112	1984	cmd.exe	96
PID 1984 wrote to memory of 2112	1984	cmd.exe	96
PID 1984 wrote to memory of 4552	1984	cmd.exe	97
PID 1984 wrote to memory of 4552	1984	cmd.exe	97
PID 1984 wrote to memory of 4552	1984	cmd.exe	97
PID 1868 wrote to memory of 4964	1868	sysvplervcs.exe	101
PID 1868 wrote to memory of 4964	1868	sysvplervcs.exe	101
PID 4964 wrote to memory of 4324	4964	779113501.exe	102
PID 4964 wrote to memory of 4324	4964	779113501.exe	102
PID 4964 wrote to memory of 1484	4964	779113501.exe	104
PID 4964 wrote to memory of 1484	4964	779113501.exe	104
PID 4324 wrote to memory of 1516	4324	cmd.exe	106
PID 4324 wrote to memory of 1516	4324	cmd.exe	106
PID 1484 wrote to memory of 4412	1484	cmd.exe	107
PID 1484 wrote to memory of 4412	1484	cmd.exe	107
PID 1868 wrote to memory of 4864	1868	sysvplervcs.exe	108
PID 1868 wrote to memory of 4864	1868	sysvplervcs.exe	108
PID 1868 wrote to memory of 4864	1868	sysvplervcs.exe	108

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\21b61b3680c5e66f9f7b1f3026327757.exe
"C:\Users\Admin\AppData\Local\Temp\21b61b3680c5e66f9f7b1f3026327757.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\14551.scr
  "C:\Users\Admin\AppData\Local\Temp\14551.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:1948
- - C:\Windows\sysvplervcs.exe
    C:\Windows\sysvplervcs.exe
    3⤵
    - Modifies security service
    - Windows security bypass
    - Checks computer location settings
    - Executes dropped EXE
    - Windows security modification
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1868
  - - 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:1388
    - - 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:4968
  - - 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:1984
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop UsoSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:4964
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop WaaSMedicSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:3292
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop wuauserv
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:3664
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop DoSvc
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2112
    - - C:\Windows\SysWOW64\sc.exe
        
        sc stop BITS /wait
        5⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:4552
  - - C:\Users\Admin\AppData\Local\Temp\779113501.exe
      C:\Users\Admin\AppData\Local\Temp\779113501.exe
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4964
    - - 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:4324
      - C:\Windows\system32\reg.exe
        
        reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
        6⤵
        
        PID:1516
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1484
      - C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "Windows Upgrade Manager"
        6⤵
        
        PID:4412
  - - C:\Users\Admin\AppData\Local\Temp\250884562.exe
      C:\Users\Admin\AppData\Local\Temp\250884562.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:4864

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\INetCache\IE\TTJXD3SW\1[1]

Filesize
108KB

MD5
1fcb78fb6cf9720e9d9494c42142d885

SHA1
fef9c2e728ab9d56ce9ed28934b3182b6f1d5379

SHA256
84652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02

SHA512
cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\14551.scr

Filesize
96KB

MD5
930c41bc0c20865af61a95bcf0c3b289

SHA1
cecf37c3b6c76d9a79dd2a97cfc518621a6ac924

SHA256
1f2e9724dfb091059ae16c305601e21d64b5308df76ddef6b394573e576ef1ff

SHA512
fa1f33c71da608b3980038981220fcebee0b0cc44331e52f5198dd2761c97631ee8286756c2cc16245a1370c83bb53cc8ea8ef64e0fcdd30af51f023973986b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\250884562.exe

Filesize
15KB

MD5
0c37ee292fec32dba0420e6c94224e28

SHA1
012cbdddaddab319a4b3ae2968b42950e929c46b

SHA256
981d724feebc36777e99513dc061d1f009e589f965c920797285c46d863060d1

SHA512
2b60b571c55d0441ba0cfc695f9db5cd12660ebec7effc7e893c3b7a1c6cb6149df487c31b8d748697e260cbc4af29331592b705ea9638f64a711c7a6164628b

Download Submit
C:\Users\Admin\AppData\Local\Temp\779113501.exe

Filesize
8KB

MD5
cb8420e681f68db1bad5ed24e7b22114

SHA1
416fc65d538d3622f5ca71c667a11df88a927c31

SHA256
5850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea

SHA512
baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eg5vnhpd.ozm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4964-73-0x00000000009A0000-0x00000000009A6000-memory.dmp

Filesize
24KB

Download
memory/4968-41-0x0000000006EE0000-0x0000000006EFE000-memory.dmp

Filesize
120KB

Download
memory/4968-46-0x0000000007EF0000-0x0000000007F86000-memory.dmp

Filesize
600KB

Download
memory/4968-28-0x0000000006940000-0x000000000695E000-memory.dmp

Filesize
120KB

Download
memory/4968-29-0x0000000006970000-0x00000000069BC000-memory.dmp

Filesize
304KB

Download
memory/4968-30-0x0000000006F20000-0x0000000006F52000-memory.dmp

Filesize
200KB

Download
memory/4968-31-0x0000000070360000-0x00000000703AC000-memory.dmp

Filesize
304KB

Download
memory/4968-16-0x0000000006270000-0x00000000062D6000-memory.dmp

Filesize
408KB

Download
memory/4968-42-0x0000000007B20000-0x0000000007BC3000-memory.dmp

Filesize
652KB

Download
memory/4968-43-0x0000000008310000-0x000000000898A000-memory.dmp

Filesize
6.5MB

Download
memory/4968-44-0x0000000007C90000-0x0000000007CAA000-memory.dmp

Filesize
104KB

Download
memory/4968-45-0x0000000007CE0000-0x0000000007CEA000-memory.dmp

Filesize
40KB

Download
memory/4968-23-0x0000000006350000-0x00000000066A4000-memory.dmp

Filesize
3.3MB

Download
memory/4968-47-0x0000000007E80000-0x0000000007E91000-memory.dmp

Filesize
68KB

Download
memory/4968-48-0x0000000007EB0000-0x0000000007EBE000-memory.dmp

Filesize
56KB

Download
memory/4968-49-0x0000000007EC0000-0x0000000007ED4000-memory.dmp

Filesize
80KB

Download
memory/4968-50-0x0000000007FB0000-0x0000000007FCA000-memory.dmp

Filesize
104KB

Download
memory/4968-51-0x0000000007F90000-0x0000000007F98000-memory.dmp

Filesize
32KB

Download
memory/4968-17-0x00000000062E0000-0x0000000006346000-memory.dmp

Filesize
408KB

Download
memory/4968-15-0x00000000059A0000-0x00000000059C2000-memory.dmp

Filesize
136KB

Download
memory/4968-14-0x0000000005B10000-0x0000000006138000-memory.dmp

Filesize
6.2MB

Download
memory/4968-13-0x00000000033A0000-0x00000000033D6000-memory.dmp

Filesize
216KB

Download