phorphiex | bb927a250f19167d7d8ebb47d4366c60aabcc7cd1fbf1dad2c6cff10291bf7c2

General

Target

2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe
Size

1.0MB
MD5

91a2f9569facb90961495ea7743d570f
SHA1

a252d153d3a90f66781345c90a5ee0cdb2b95162
SHA256

bb927a250f19167d7d8ebb47d4366c60aabcc7cd1fbf1dad2c6cff10291bf7c2
SHA512

f1292db9cea63437b21fb791a7898a805348e4f20e7d9385109f4135e7c3f697b51626fbded6e1a42669c878a50886de7cd0fb9631138979bbedee90e66de0a4
SSDEEP

24576:wIVcd9TcpFwYNFZkdFjT4kGBFm6h+BJzlNa9f3GkbkXw:BcjXuZkT16h+BJRNa9f3aXw

Score

10^/10

phorphiex discovery evasion execution loader persistence trojan worm

Malware Config

Extracted

Family

phorphiex

C2

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

Processes:

sysmysldrv.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Start = "4" sysmysldrv.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wuauserv\Start = "4"	sysmysldrv.exe

Phorphiex payload 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\116532815.exe	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

Processes:

sysmysldrv.exe

description	ioc	process
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\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

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

Processes:

powershell.exe

pid process

1016 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

pid	process
1016	powershell.exe

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

Processes:

sysmysldrv.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	sysmysldrv.exe

Executes dropped EXE 3 IoCs

Processes:

9A2D.exe116532815.exesysmysldrv.exe

pid process

1292 9A2D.exe
4456 116532815.exe
404 sysmysldrv.exe

pid	process
1292	9A2D.exe
4456	116532815.exe
404	sysmysldrv.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

sysmysldrv.exe

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

Processes:

116532815.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Settings = "C:\\Windows\\sysmysldrv.exe"	116532815.exe

Drops file in Windows directory 2 IoCs

Processes:

116532815.exe

description ioc process

File opened for modification C:\Windows\sysmysldrv.exe 116532815.exe
File created C:\Windows\sysmysldrv.exe 116532815.exe
Launches sc.exe 5 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exesc.exesc.exe

pid process

4356 sc.exe
1576 sc.exe
3088 sc.exe
2244 sc.exe
2676 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\sysmysldrv.exe	116532815.exe
File created	C:\Windows\sysmysldrv.exe	116532815.exe

pid	process
4356	sc.exe
1576	sc.exe
3088	sc.exe
2244	sc.exe
2676	sc.exe

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

Processes:

cmd.exesc.exesc.exesc.exesc.exesc.exe2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe9A2D.exe116532815.exesysmysldrv.execmd.exepowershell.exe

description	ioc	process
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	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_91a2f9569facb90961495ea7743d570f_avoslocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9A2D.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	116532815.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	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

1016 powershell.exe
1016 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1016 powershell.exe

pid	process
1016	powershell.exe
1016	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1016	powershell.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe9A2D.exe116532815.exesysmysldrv.execmd.execmd.exe

description	pid	process	target process
PID 3336 wrote to memory of 1292	3336	2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe	9A2D.exe
PID 3336 wrote to memory of 1292	3336	2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe	9A2D.exe
PID 3336 wrote to memory of 1292	3336	2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe	9A2D.exe
PID 1292 wrote to memory of 4456	1292	9A2D.exe	116532815.exe
PID 1292 wrote to memory of 4456	1292	9A2D.exe	116532815.exe
PID 1292 wrote to memory of 4456	1292	9A2D.exe	116532815.exe
PID 4456 wrote to memory of 404	4456	116532815.exe	sysmysldrv.exe
PID 4456 wrote to memory of 404	4456	116532815.exe	sysmysldrv.exe
PID 4456 wrote to memory of 404	4456	116532815.exe	sysmysldrv.exe
PID 404 wrote to memory of 2832	404	sysmysldrv.exe	cmd.exe
PID 404 wrote to memory of 2832	404	sysmysldrv.exe	cmd.exe
PID 404 wrote to memory of 2832	404	sysmysldrv.exe	cmd.exe
PID 404 wrote to memory of 1612	404	sysmysldrv.exe	cmd.exe
PID 404 wrote to memory of 1612	404	sysmysldrv.exe	cmd.exe
PID 404 wrote to memory of 1612	404	sysmysldrv.exe	cmd.exe
PID 2832 wrote to memory of 1016	2832	cmd.exe	powershell.exe
PID 2832 wrote to memory of 1016	2832	cmd.exe	powershell.exe
PID 2832 wrote to memory of 1016	2832	cmd.exe	powershell.exe
PID 1612 wrote to memory of 4356	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 4356	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 4356	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 1576	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 1576	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 1576	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 3088	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 3088	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 3088	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 2244	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 2244	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 2244	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 2676	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 2676	1612	cmd.exe	sc.exe
PID 1612 wrote to memory of 2676	1612	cmd.exe	sc.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-27_91a2f9569facb90961495ea7743d570f_avoslocker.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Users\Admin\AppData\Local\Temp\9A2D.exe
  "C:\Users\Admin\AppData\Local\Temp\9A2D.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1292
- - C:\Users\Admin\AppData\Local\Temp\116532815.exe
    C:\Users\Admin\AppData\Local\Temp\116532815.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:4456
  - - 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:404
    - - 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:2832
      - 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:1016
    - - 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:1612
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop UsoSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:4356
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop WaaSMedicSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:1576
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop wuauserv
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:3088
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop DoSvc
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2244
      - C:\Windows\SysWOW64\sc.exe
        
        sc stop BITS
        6⤵
        Launches sc.exe
        System Location Discovery: System Language Discovery
        
        PID:2676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1

T1489

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Downloads

C:\Users\Admin\AppData\Local\Temp\116532815.exe

Filesize
92KB

MD5
be9388b42333b3d4e163b0ace699897b

SHA1
4e1109772eb9cb59c557380822166fe1664403bd

SHA256
d281e0a0f1e1073f2d290a7eb1f77bed4c210dbf83a0f4f4e22073f50faa843f

SHA512
5f887f1060b898c9a88745cde7cf509fdf42947ab8e5948b46c2df659468dc245b24d089bdbec0b314c40b83934698bf4b6feb8954e32810ff8f522aab0af19a

Download Submit
C:\Users\Admin\AppData\Local\Temp\9A2D.exe

Filesize
9KB

MD5
8d8e6c7952a9dc7c0c73911c4dbc5518

SHA1
9098da03b33b2c822065b49d5220359c275d5e94

SHA256
feb4c3ae4566f0acbb9e0f55417b61fefd89dc50a4e684df780813fb01d61278

SHA512
91a573843c28dd32a9f31a60ba977f9a3d4bb19ffd1b7254333e09bcecef348c1b3220a348ebb2cb08edb57d56cb7737f026519da52199c9dc62c10aea236645

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1j2dfbbl.n2z.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1016-35-0x000000006FE30000-0x000000006FE7C000-memory.dmp

Filesize
304KB

Download
memory/1016-46-0x0000000007960000-0x0000000007A03000-memory.dmp

Filesize
652KB

Download
memory/1016-20-0x00000000060B0000-0x0000000006116000-memory.dmp

Filesize
408KB

Download
memory/1016-21-0x0000000006120000-0x0000000006186000-memory.dmp

Filesize
408KB

Download
memory/1016-18-0x00000000058D0000-0x0000000005EF8000-memory.dmp

Filesize
6.2MB

Download
memory/1016-31-0x0000000006190000-0x00000000064E4000-memory.dmp

Filesize
3.3MB

Download
memory/1016-32-0x0000000006760000-0x000000000677E000-memory.dmp

Filesize
120KB

Download
memory/1016-33-0x00000000067A0000-0x00000000067EC000-memory.dmp

Filesize
304KB

Download
memory/1016-34-0x0000000007920000-0x0000000007952000-memory.dmp

Filesize
200KB

Download
memory/1016-17-0x00000000051A0000-0x00000000051D6000-memory.dmp

Filesize
216KB

Download
memory/1016-45-0x0000000006D40000-0x0000000006D5E000-memory.dmp

Filesize
120KB

Download
memory/1016-19-0x00000000057B0000-0x00000000057D2000-memory.dmp

Filesize
136KB

Download
memory/1016-47-0x0000000008140000-0x00000000087BA000-memory.dmp

Filesize
6.5MB

Download
memory/1016-48-0x0000000007A90000-0x0000000007AAA000-memory.dmp

Filesize
104KB

Download
memory/1016-49-0x0000000007B00000-0x0000000007B0A000-memory.dmp

Filesize
40KB

Download
memory/1016-50-0x0000000007D10000-0x0000000007DA6000-memory.dmp

Filesize
600KB

Download
memory/1016-51-0x0000000007CB0000-0x0000000007CC1000-memory.dmp

Filesize
68KB

Download
memory/1016-52-0x0000000007CD0000-0x0000000007CDE000-memory.dmp

Filesize
56KB

Download
memory/1016-53-0x0000000007CE0000-0x0000000007CF4000-memory.dmp

Filesize
80KB

Download
memory/1016-54-0x0000000007DD0000-0x0000000007DEA000-memory.dmp

Filesize
104KB

Download
memory/1016-55-0x0000000007DB0000-0x0000000007DB8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads