phorphiex | 8c4365d54648de2dc433943c0e7749b554b2e505541f4f45eacbf8357d4102ca

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/10/2024, 19:22

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General

Target

2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe
Size

618KB
MD5

84a0e0284dd3fbda105bdacbfef58aa0
SHA1

e9f37cede0f6f6d5b47b57a8d3bd5290029fa2fe
SHA256

8c4365d54648de2dc433943c0e7749b554b2e505541f4f45eacbf8357d4102ca
SHA512

67b34ab89b02de70d73bc9fed8630755ea187cd12b318a60b51e9d59861aee02276966eca91ccf1e7a7bab24cdf98d722f4c87a22a10de09d803281d1f3e3eb6
SSDEEP

12288:QmKt6DsU6ngc3kY+KC5gzwGKZ4cuQW8XQAL019bqoFARwp:QR8Y+sxYWkX019bqgWwp

Score

10^/10

phorphiex discovery evasion execution loader persistence trojan worm

Malware Config

Extracted

Family

phorphiex

http://185.215.113.66/

http://91.202.233.141/

Wallets

0xCa90599132C4D88907Bd8E046540284aa468a035

TRuGGXNDM1cavQ1AqMQHG8yfxP4QWVSMN6

qph44jx8r9k5xeq5cuf958krv3ewrnp5vc6hhdjd3r

XryzFMFVpDUvU7famUGf214EXD3xNUSmQf

rsXCXBf9SagxV8JfC12d8Bybk84oPdMNN9

AULzfBuUAPfCGAXoG5Vq14aP9s6fx3AH4Z

LTK4xdKPAgFHPLan8kriAD7eY4heyy73mB

MP8GEm8QpYgQYaMo8oM5NQhRBgDGiLZW5Q

4BB7ckkaPTyADc8trtuwDoZxywaR4eNL5cDJ3KBjq9GraN4mUFztf7mLS7WgT7Bh7uPqpjvA4ypVwXKCJ1vvLWWAFvSmDoD

15TssKwtjMtwy4vDLcLsQUZUD2B9f7eDjw85sBNVC5LRPPnC

1BzmrjmKPKSR2hH5BeJySfiVA676E8DYaK

ltc1qt0n3f0t7vz9k0mvcswk477shrxwjhf9sj5ykrp

3PMiLynrGVZ8oEqvoqC4hXD67B1WoALR4pc

3ESHude8zUHksQg1h6hHmzY79BS36L91Yn

DLUzwvyxN1RrwjByUPPzVMdfxNRPGVRMMA

t1J6GCPCiHW1eRdjJgDDu6b1vSVmL5U7Twh

stars125f3mw4xd9htpsq4zj5w5ezm5gags37yxxh6mj

bnb1msyt0djx4ecspfxg5en0ye465kg3kmv9utzml2

bc1ppypcmu3684n648gyj62gjp2rw0xy7w3vwfamatlg29ajp4z52desafa0sr

bc1qc9edl4hzl9jyt8twdad3zjeh2df2znq96tdezd

Attributes

mutex
mmn7nnm8na
user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

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"	sysppvrdnvs.exe

Phorphiex payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0007000000016eb8-9.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\AntiVirusDisableNotify = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysppvrdnvs.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
2528	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
1668	D597.exe
2812	101229487.exe
2352	sysppvrdnvs.exe
2220	1136612077.exe

Loads dropped DLL 3 IoCs

pid	Process
1668	D597.exe
1668	D597.exe
2352	sysppvrdnvs.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"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysppvrdnvs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	sysppvrdnvs.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\\sysppvrdnvs.exe"	101229487.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\sysppvrdnvs.exe	101229487.exe
File created	C:\Windows\sysppvrdnvs.exe	101229487.exe

Launches sc.exe 5 IoCs

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

pid	Process
2508	sc.exe
2564	sc.exe
2588	sc.exe
2976	sc.exe
2556	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	D597.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	101229487.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysppvrdnvs.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
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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2528	powershell.exe
2220	1136612077.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	powershell.exe
Token: SeDebugPrivilege	2220	1136612077.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 1668	268	2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe	33
PID 268 wrote to memory of 1668	268	2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe	33
PID 268 wrote to memory of 1668	268	2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe	33
PID 268 wrote to memory of 1668	268	2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe	33
PID 1668 wrote to memory of 2812	1668	D597.exe	34
PID 1668 wrote to memory of 2812	1668	D597.exe	34
PID 1668 wrote to memory of 2812	1668	D597.exe	34
PID 1668 wrote to memory of 2812	1668	D597.exe	34
PID 2812 wrote to memory of 2352	2812	101229487.exe	35
PID 2812 wrote to memory of 2352	2812	101229487.exe	35
PID 2812 wrote to memory of 2352	2812	101229487.exe	35
PID 2812 wrote to memory of 2352	2812	101229487.exe	35
PID 2352 wrote to memory of 2884	2352	sysppvrdnvs.exe	36
PID 2352 wrote to memory of 2884	2352	sysppvrdnvs.exe	36
PID 2352 wrote to memory of 2884	2352	sysppvrdnvs.exe	36
PID 2352 wrote to memory of 2884	2352	sysppvrdnvs.exe	36
PID 2352 wrote to memory of 2684	2352	sysppvrdnvs.exe	38
PID 2352 wrote to memory of 2684	2352	sysppvrdnvs.exe	38
PID 2352 wrote to memory of 2684	2352	sysppvrdnvs.exe	38
PID 2352 wrote to memory of 2684	2352	sysppvrdnvs.exe	38
PID 2684 wrote to memory of 2508	2684	cmd.exe	40
PID 2684 wrote to memory of 2508	2684	cmd.exe	40
PID 2684 wrote to memory of 2508	2684	cmd.exe	40
PID 2684 wrote to memory of 2508	2684	cmd.exe	40
PID 2884 wrote to memory of 2528	2884	cmd.exe	41
PID 2884 wrote to memory of 2528	2884	cmd.exe	41
PID 2884 wrote to memory of 2528	2884	cmd.exe	41
PID 2884 wrote to memory of 2528	2884	cmd.exe	41
PID 2684 wrote to memory of 2564	2684	cmd.exe	42
PID 2684 wrote to memory of 2564	2684	cmd.exe	42
PID 2684 wrote to memory of 2564	2684	cmd.exe	42
PID 2684 wrote to memory of 2564	2684	cmd.exe	42
PID 2684 wrote to memory of 2588	2684	cmd.exe	43
PID 2684 wrote to memory of 2588	2684	cmd.exe	43
PID 2684 wrote to memory of 2588	2684	cmd.exe	43
PID 2684 wrote to memory of 2588	2684	cmd.exe	43
PID 2684 wrote to memory of 2976	2684	cmd.exe	44
PID 2684 wrote to memory of 2976	2684	cmd.exe	44
PID 2684 wrote to memory of 2976	2684	cmd.exe	44
PID 2684 wrote to memory of 2976	2684	cmd.exe	44
PID 2684 wrote to memory of 2556	2684	cmd.exe	45
PID 2684 wrote to memory of 2556	2684	cmd.exe	45
PID 2684 wrote to memory of 2556	2684	cmd.exe	45
PID 2684 wrote to memory of 2556	2684	cmd.exe	45
PID 2352 wrote to memory of 2220	2352	sysppvrdnvs.exe	48
PID 2352 wrote to memory of 2220	2352	sysppvrdnvs.exe	48
PID 2352 wrote to memory of 2220	2352	sysppvrdnvs.exe	48
PID 2352 wrote to memory of 2220	2352	sysppvrdnvs.exe	48
PID 2220 wrote to memory of 296	2220	1136612077.exe	49
PID 2220 wrote to memory of 296	2220	1136612077.exe	49
PID 2220 wrote to memory of 296	2220	1136612077.exe	49
PID 2220 wrote to memory of 1236	2220	1136612077.exe	51
PID 2220 wrote to memory of 1236	2220	1136612077.exe	51
PID 2220 wrote to memory of 1236	2220	1136612077.exe	51
PID 296 wrote to memory of 2044	296	cmd.exe	53
PID 296 wrote to memory of 2044	296	cmd.exe	53
PID 296 wrote to memory of 2044	296	cmd.exe	53
PID 1236 wrote to memory of 1172	1236	cmd.exe	54
PID 1236 wrote to memory of 1172	1236	cmd.exe	54
PID 1236 wrote to memory of 1172	1236	cmd.exe	54

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\2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-20_84a0e0284dd3fbda105bdacbfef58aa0_cobalt-strike_ryuk.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:268
- C:\Users\Admin\AppData\Local\Temp\D597.exe
  "C:\Users\Admin\AppData\Local\Temp\D597.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1668
- - C:\Users\Admin\AppData\Local\Temp\101229487.exe
    C:\Users\Admin\AppData\Local\Temp\101229487.exe
    3⤵
    - 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:2812
  - - C:\Windows\sysppvrdnvs.exe
      C:\Windows\sysppvrdnvs.exe
      4⤵
      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:2352
    - - 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"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2884
      - 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"
        6⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2528
    - - 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
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2684
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop UsoSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2508
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop WaaSMedicSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2564
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop wuauserv
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2588
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop DoSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2976
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop BITS /wait
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2556
    - - C:\Users\Admin\AppData\Local\Temp\1136612077.exe
        
        C:\Users\Admin\AppData\Local\Temp\1136612077.exe
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2220
      - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:296
        
        C:\Windows\system32\reg.exe
        
        reg delete "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Windows Upgrade Manager" /f
        7⤵
        
        PID:2044
      - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Upgrade Manager"
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:1236
        
        C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "Windows Upgrade Manager"
        7⤵
        
        PID:1172

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\QS2MOPHD\1[1]

Filesize
108KB

MD5
1fcb78fb6cf9720e9d9494c42142d885

SHA1
fef9c2e728ab9d56ce9ed28934b3182b6f1d5379

SHA256
84652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02

SHA512
cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\D597.exe

Filesize
9KB

MD5
8d8e6c7952a9dc7c0c73911c4dbc5518

SHA1
9098da03b33b2c822065b49d5220359c275d5e94

SHA256
feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278

SHA512
91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645

Download Submit
\Users\Admin\AppData\Local\Temp\101229487.exe

Filesize
83KB

MD5
06560b5e92d704395bc6dae58bc7e794

SHA1
fbd3e4ae28620197d1f02bfc24adaf4ddacd2372

SHA256
9eaaadf3857e4a3e83f4f78d96ab185213b6528c8e470807f9d16035daadf33d

SHA512
b55b49fc1bd526c47d88fcf8a20fcaed900bfb291f2e3e1186ec196a87127ed24df71385ae04fedcc802c362c4ebf38edfc182013febf4496ddeb66ce5195ee3

Download Submit
\Users\Admin\AppData\Local\Temp\1136612077.exe

Filesize
8KB

MD5
cb8420e681f68db1bad5ed24e7b22114

SHA1
416fc65d538d3622f5ca71c667a11df88a927c31

SHA256
5850892f67f85991b31fc90f62c8b7791afeb3c08ae1877d857aa2b59471a2ea

SHA512
baaabcc4ad5d409267a34ed7b20e4afb4d247974bfc581d39aae945e5bf8a673a1f8eacae2e6783480c8baaeb0a80d028274a202d456f13d0af956afa0110fdf

Download Submit
memory/2220-47-0x000000013FC40000-0x000000013FC46000-memory.dmp

Filesize
24KB

Download