phorphiex | 835226f51fa91e6953a55aca6de51cf3262785d00d8b0cb8544318c31781bebb

General

Target

VolDriver.exe
Size

73KB
MD5

45fcc38f53e4ba514815477f91618a47
SHA1

e971641482d77987e082289c38388052465b2117
SHA256

68dd15c384e6d7b3fc6afeda9a17df9ffa55ed29861e9249751488b03abac2fc
SHA512

99f0a43b7e0bf732a87cbb36c84ec10d72d4e60d3fa805c908597956cdde005d60e225f24d24da5a07747bd5265eeb78edc7e5f5c0da1f005cac5c21ac53f08d
SSDEEP

1536:q3Mz8qPJhOiwf80HUAB0jguYmi159R7wKcfF4:RwEJhOBHpuEHmi1ZEFfF

Score

10^/10

phorphiex discovery evasion loader persistence trojan worm

Malware Config

Signatures

Phorphiex payload 1 IoCs

Processes:

resource	yara_rule
C:\Windows\sysredvcs.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:

sysredvcs.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysredvcs.exe

Executes dropped EXE 1 IoCs

Processes:

sysredvcs.exe

pid process

2660 sysredvcs.exe

pid	process
2660	sysredvcs.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

sysredvcs.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysredvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysredvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

VolDriver.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Settings = "C:\\Windows\\sysredvcs.exe"	VolDriver.exe

Drops file in Windows directory 2 IoCs

Processes:

VolDriver.exe

description ioc process

File created C:\Windows\sysredvcs.exe VolDriver.exe
File opened for modification C:\Windows\sysredvcs.exe VolDriver.exe

description	ioc	process
File created	C:\Windows\sysredvcs.exe	VolDriver.exe
File opened for modification	C:\Windows\sysredvcs.exe	VolDriver.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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:

VolDriver.exesysredvcs.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VolDriver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysredvcs.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

VolDriver.exe

description	pid	process	target process
PID 2252 wrote to memory of 2660	2252	VolDriver.exe	sysredvcs.exe
PID 2252 wrote to memory of 2660	2252	VolDriver.exe	sysredvcs.exe
PID 2252 wrote to memory of 2660	2252	VolDriver.exe	sysredvcs.exe
PID 2252 wrote to memory of 2660	2252	VolDriver.exe	sysredvcs.exe

C:\Users\Admin\AppData\Local\Temp\VolDriver.exe
"C:\Users\Admin\AppData\Local\Temp\VolDriver.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252

C:\Windows\sysredvcs.exe
C:\Windows\sysredvcs.exe
2⤵
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- System Location Discovery: System Language Discovery
PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HHT5LGG0\2[1]

Filesize
86KB

MD5
fe1e93f12cca3f7c0c897ef2084e1778

SHA1
fb588491ddad8b24ea555a6a2727e76cec1fade3

SHA256
2ebc4a92f4fdc27d4ab56e57058575a8b18adb076cbd30feea2ecdc8b7fcd41f

SHA512
36e0524c465187ae9ad207c724aee45bcd61cfd3fa66a79f9434d24fcbadc0a743834d5e808e6041f3bd88e75deb5afd34193574f005ed97e4b17c6b0388cb93

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\LPQ313RR\1[1]

Filesize
108KB

MD5
1fcb78fb6cf9720e9d9494c42142d885

SHA1
fef9c2e728ab9d56ce9ed28934b3182b6f1d5379

SHA256
84652bb8c63ca4fd7eb7a2d6ef44029801f3057aa2961867245a3a765928dd02

SHA512
cdf58e463af1784aea86995b3e5d6b07701c5c4095e30ec80cc901ffd448c6f4f714c521bf8796ffa8c47538bf8bf5351e157596efaa7ab88155d63dc33f7dc3

Download Submit
C:\Windows\sysredvcs.exe

Filesize
73KB

MD5
45fcc38f53e4ba514815477f91618a47

SHA1
e971641482d77987e082289c38388052465b2117

SHA256
68dd15c384e6d7b3fc6afeda9a17df9ffa55ed29861e9249751488b03abac2fc

SHA512
99f0a43b7e0bf732a87cbb36c84ec10d72d4e60d3fa805c908597956cdde005d60e225f24d24da5a07747bd5265eeb78edc7e5f5c0da1f005cac5c21ac53f08d

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads