phorphiex | 1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e

General

Target

1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe
Size

88KB
MD5

304fad5ef338d902ad76d7f63814b6e9
SHA1

a29d72518054769b7aa06c74cb4251dde249cc48
SHA256

1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e
SHA512

d6d67588d7e3f489dde78c3ce11de21894a38a950ba9542ff63a0aa60a8fad2c95a8d51c65f25950ae02f75da3f0f517ad5fe50da65741d160fe2af51cf51605
SSDEEP

1536:wL0IbNyFmav82fp0kdP6+0MTqEjXm/D5AKHK:c0cXO3pN6+JuEjaaKHK

Score

10^/10

phorphiex discovery evasion 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"	sysmablsvr.exe

Phorphiex family
phorphiex

Phorphiex payload 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000019433-4.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\AntiVirusDisableNotify = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysmablsvr.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	sysmablsvr.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"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	sysmablsvr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	sysmablsvr.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\\sysmablsvr.exe"	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\sysmablsvr.exe	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe
File opened for modification	C:\Windows\sysmablsvr.exe	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
292	2524	WerFault.exe	30

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sysmablsvr.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2524	2088	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe	30
PID 2088 wrote to memory of 2524	2088	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe	30
PID 2088 wrote to memory of 2524	2088	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe	30
PID 2088 wrote to memory of 2524	2088	1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe	30
PID 2524 wrote to memory of 292	2524	sysmablsvr.exe	32
PID 2524 wrote to memory of 292	2524	sysmablsvr.exe	32
PID 2524 wrote to memory of 292	2524	sysmablsvr.exe	32
PID 2524 wrote to memory of 292	2524	sysmablsvr.exe	32

C:\Users\Admin\AppData\Local\Temp\1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe
"C:\Users\Admin\AppData\Local\Temp\1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\sysmablsvr.exe
  C:\Windows\sysmablsvr.exe
  2⤵
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2524
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 764
    3⤵
    - Program crash
    PID:292

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

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

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:\Windows\sysmablsvr.exe

Filesize
88KB

MD5
304fad5ef338d902ad76d7f63814b6e9

SHA1
a29d72518054769b7aa06c74cb4251dde249cc48

SHA256
1efa6a64f673ff7c35dbc94781e9c9e7529edd1235cce22cf50a0eca1e88d51e

SHA512
d6d67588d7e3f489dde78c3ce11de21894a38a950ba9542ff63a0aa60a8fad2c95a8d51c65f25950ae02f75da3f0f517ad5fe50da65741d160fe2af51cf51605

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads