phorphiex | 5d283fb295f9625c525061ce36a81a255d0702fe2dcae71c2cadf0ce7bc697cd

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27/08/2024, 21:26

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General

Target
2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe
Size 1.0MB
Sample240827-1acnhssemh
SHA256 5d283fb295f9625c525061ce36a81a255d0702fe2dcae71c2cadf0ce7bc697cd
MD5 e3bfb350fae05724476a541ac0aff3c6
SHA1 e616580e84f3a39178a7345272d066d55fd48f75
SHA512 d5e44b91f2eeb7825e16d5e5158f3cec893260c84b1089410b4b7204ec3907ef958f5a6852fcdaefca2509b91753856170c3f9aaafdee08013d5e686cb15f33c
SSDEEP 24576:f/ckp+7WS4qhUsEi/0uB6nKORw2blaJH2GkbBQc:f+SEm/KORwclaJH27Qc
MD5 SHA1 SHA512 SSDEEP

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
LLeT2zkStY3cvxMBFhoWXkG5VuZPoezduv
rwc4LVd9ABpULQ1CuCpDkgX2xVB1fUijyb
4AtjkCVKbtEC3UEN77SQHuH9i1XkzNiRi5VCbA2XGsJh46nJSXfGQn4GjLuupCqmC57Lo7LvKmFUyRfhtJSvKvuw3h9ReKK
15TssKwtjMtwy4vDLcLsQUZUD2B9f7eDjw85sBNVC5LRPPnC
17hgMFyLDwMjxWqw5GhijhnPdJDyFDqecY
ltc1qt0n3f0t7vz9k0mvcswk477shrxwjhf9sj5ykrp
3PMiLynrGVZ8oEqvoqC4hXD67B1WoALR4pc
3FerB8kUraAVGCVCNkgv57zTBjUGjAUkU3
DLUzwvyxN1RrwjByUPPzVMdfxNRPGVRMMA
t1J6GCPCiHW1eRdjJgDDu6b1vSVmL5U7Twh
stars125f3mw4xd9htpsq4zj5w5ezm5gags37yxxh6mj
bnb1epx67ne4vckqmaj4gwke8m322f4yjr6eh52wqw
bc1qmpkehfffkr6phuklsksnd7nhgx0369sxu772m3
bitcoincash:qph44jx8r9k5xeq5cuf958krv3ewrnp5vc6hhdjd3r
GBQJMXYXPRIWFMXIFJR35ZB7LRKMB4PHCIUAUFR3TKUL6RDBZVLZEUJ3

Attributes

mutex
x88767657x
user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 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"	sysmysldrv.exe

Phorphiex payload 1 IoCs

resource	yara_rule
behavioral2/files/0x000b0000000233f4-10.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"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysmysldrv.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
4172	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 1 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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	sysmysldrv.exe

Executes dropped EXE 3 IoCs

pid	Process
1156	9B17.exe
3804	143933582.exe
2464	sysmysldrv.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\UpdatesDisableNotify = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysmysldrv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysmysldrv.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\\sysmysldrv.exe"	143933582.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\sysmysldrv.exe	143933582.exe
File created	C:\Windows\sysmysldrv.exe	143933582.exe

Launches sc.exe 5 IoCs

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

pid	Process
2220	sc.exe
5100	sc.exe
4428	sc.exe
4512	sc.exe
3440	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9B17.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	143933582.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysmysldrv.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	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4172	powershell.exe
4172	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4172	powershell.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3516 wrote to memory of 1156	3516	2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe	88
PID 3516 wrote to memory of 1156	3516	2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe	88
PID 3516 wrote to memory of 1156	3516	2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe	88
PID 1156 wrote to memory of 3804	1156	9B17.exe	95
PID 1156 wrote to memory of 3804	1156	9B17.exe	95
PID 1156 wrote to memory of 3804	1156	9B17.exe	95
PID 3804 wrote to memory of 2464	3804	143933582.exe	97
PID 3804 wrote to memory of 2464	3804	143933582.exe	97
PID 3804 wrote to memory of 2464	3804	143933582.exe	97
PID 2464 wrote to memory of 3048	2464	sysmysldrv.exe	100
PID 2464 wrote to memory of 3048	2464	sysmysldrv.exe	100
PID 2464 wrote to memory of 3048	2464	sysmysldrv.exe	100
PID 2464 wrote to memory of 760	2464	sysmysldrv.exe	102
PID 2464 wrote to memory of 760	2464	sysmysldrv.exe	102
PID 2464 wrote to memory of 760	2464	sysmysldrv.exe	102
PID 3048 wrote to memory of 4172	3048	cmd.exe	104
PID 3048 wrote to memory of 4172	3048	cmd.exe	104
PID 3048 wrote to memory of 4172	3048	cmd.exe	104
PID 760 wrote to memory of 2220	760	cmd.exe	105
PID 760 wrote to memory of 2220	760	cmd.exe	105
PID 760 wrote to memory of 2220	760	cmd.exe	105
PID 760 wrote to memory of 5100	760	cmd.exe	106
PID 760 wrote to memory of 5100	760	cmd.exe	106
PID 760 wrote to memory of 5100	760	cmd.exe	106
PID 760 wrote to memory of 4428	760	cmd.exe	107
PID 760 wrote to memory of 4428	760	cmd.exe	107
PID 760 wrote to memory of 4428	760	cmd.exe	107
PID 760 wrote to memory of 4512	760	cmd.exe	108
PID 760 wrote to memory of 4512	760	cmd.exe	108
PID 760 wrote to memory of 4512	760	cmd.exe	108
PID 760 wrote to memory of 3440	760	cmd.exe	109
PID 760 wrote to memory of 3440	760	cmd.exe	109
PID 760 wrote to memory of 3440	760	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-27_e3bfb350fae05724476a541ac0aff3c6_avoslocker.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\9B17.exe
  "C:\Users\Admin\AppData\Local\Temp\9B17.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1156
- - C:\Users\Admin\AppData\Local\Temp\143933582.exe
    C:\Users\Admin\AppData\Local\Temp\143933582.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:3804
  - - C:\Windows\sysmysldrv.exe
      C:\Windows\sysmysldrv.exe
      4⤵
      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:2464
    - - 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:3048
      - 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:4172
    - - 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
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:760
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop UsoSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2220
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop WaaSMedicSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:5100
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop wuauserv
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:4428
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop DoSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:4512
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop BITS
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:3440

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

143933582.exe

Path C:\Users\Admin\AppData\Local\Temp\143933582.exe
Size 92KB
SHA256 d281e0a0f1e1073f2d290a7eb1f77bed4c210dbf83a0f4f4e22073f50faa843f
MD5 be9388b42333b3d4e163b0ace699897b
SHA1 4e1109772eb9cb59c557380822166fe1664403bd
SHA512 5f887f1060b898c9a88745cde7cf509fdf42947ab8e5948b46c2df659468dc245b24d089bdbec0b314c40b83934698bf4b6feb8954e32810ff8f522aab0af19a
SSDEEP 1536:s9Ww4/inFmav82M1KeKKHqW4KYFqkKUSne1wjAUG94wU3K:UWwohOT44KktKGa87U3K
MD5 SHA1 SHA512 SSDEEP

Submit Download

9B17.exe

Path C:\Users\Admin\AppData\Local\Temp\9B17.exe
Size 9KB
SHA256 feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278
MD5 8d8e6c7952a9dc7c0c73911c4dbc5518
SHA1 9098da03b33b2c822065b49d5220359c275d5e94
SHA512 91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645
SSDEEP 96:zMn7AN23D0TXraYgnY1dTNDiIp+BYA8vrcVO15uJxGE9YUBz2qh3C7tCEkC:A7ANUYhUYPtp+OFMJxTmUBzthckC
MD5 SHA1 SHA512 SSDEEP

Submit Download

__PSScriptPolicyTest_rbkz201h.ang.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rbkz201h.ang.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4172-35-0x000000006FF90000-0x000000006FFDC000-memory.dmp

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memory/4172-46-0x0000000006B60000-0x0000000006C03000-memory.dmp

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memory/4172-20-0x0000000005490000-0x00000000054F6000-memory.dmp

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memory/4172-21-0x0000000005570000-0x00000000055D6000-memory.dmp

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memory/4172-18-0x0000000004C30000-0x0000000005258000-memory.dmp

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memory/4172-31-0x00000000055E0000-0x0000000005934000-memory.dmp

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memory/4172-32-0x0000000005B60000-0x0000000005B7E000-memory.dmp

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memory/4172-33-0x0000000005BA0000-0x0000000005BEC000-memory.dmp

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memory/4172-34-0x0000000006140000-0x0000000006172000-memory.dmp

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memory/4172-17-0x00000000045C0000-0x00000000045F6000-memory.dmp

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memory/4172-45-0x0000000006B30000-0x0000000006B4E000-memory.dmp

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memory/4172-19-0x0000000004BC0000-0x0000000004BE2000-memory.dmp

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memory/4172-47-0x0000000007540000-0x0000000007BBA000-memory.dmp

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memory/4172-48-0x0000000006E90000-0x0000000006EAA000-memory.dmp

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memory/4172-49-0x0000000006F10000-0x0000000006F1A000-memory.dmp

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memory/4172-50-0x0000000007110000-0x00000000071A6000-memory.dmp

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memory/4172-51-0x00000000070B0000-0x00000000070C1000-memory.dmp

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memory/4172-52-0x00000000070D0000-0x00000000070DE000-memory.dmp

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memory/4172-53-0x00000000070E0000-0x00000000070F4000-memory.dmp

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memory/4172-54-0x00000000071D0000-0x00000000071EA000-memory.dmp

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memory/4172-55-0x00000000071B0000-0x00000000071B8000-memory.dmp

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