phorphiex | 29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5

General

Target
29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe
Size 760KB
Sample220524-bnrl6abdh3
SHA256 29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5
MD5 c94f90f2acf1fb92388a9ffa27b1d05b
SHA1 fa8525c54bbb613fbcc21eb9ec7f7b99360aad31
SHA512 b3f846177732e476913ad49adad331bde90bac46d9eb36801a638c383920d0ac8090bf9b589aaf9363e17eed17e91e2b3f85f42ea68cc8a49d67b0f11e19721e
MD5 SHA1 SHA512

Score

10^/10

phorphiex evasion loader persistence trojan worm

Malware Config

Signatures

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089

Phorphiex Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3768-131-0x0000000000400000-0x00000000004C2000-memory.dmp	family_phorphiex

Phorphiex Worm
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
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Executes dropped EXE 1 IoCs

pid	Process
2240	svchost.exe

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Service Driver = "C:\\Windows\\176031633916237\\svchost.exe"	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft Service Driver = "C:\\Windows\\176031633916237\\svchost.exe"	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\176031633916237\svchost.exe	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe
File opened for modification	C:\Windows\176031633916237	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe
File created	C:\Windows\176031633916237\svchost.exe	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3768 wrote to memory of 2240	3768	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe	87
PID 3768 wrote to memory of 2240	3768	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe	87
PID 3768 wrote to memory of 2240	3768	29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe	87

C:\Users\Admin\AppData\Local\Temp\29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe
"C:\Users\Admin\AppData\Local\Temp\29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3768
- C:\Windows\176031633916237\svchost.exe
  C:\Windows\176031633916237\svchost.exe
  2⤵
  - Executes dropped EXE
  - Windows security modification
  PID:2240

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svchost.exe

Path C:\Windows\176031633916237\svchost.exe
Size 760KB
SHA256 29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5
MD5 c94f90f2acf1fb92388a9ffa27b1d05b
SHA1 fa8525c54bbb613fbcc21eb9ec7f7b99360aad31
SHA512 b3f846177732e476913ad49adad331bde90bac46d9eb36801a638c383920d0ac8090bf9b589aaf9363e17eed17e91e2b3f85f42ea68cc8a49d67b0f11e19721e
SSDEEP 3072:96edUX3HEGHEprYfwkx7eBX1WmY11HgOUXZq7KTx:tumBsHgOeKKt
MD5 SHA1 SHA512 SSDEEP

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svchost.exe

Path C:\Windows\176031633916237\svchost.exe
Size 760KB
SHA256 29d646642303528c943e7f11747e06a413495d7544ce4e576640c6cb991423f5
MD5 c94f90f2acf1fb92388a9ffa27b1d05b
SHA1 fa8525c54bbb613fbcc21eb9ec7f7b99360aad31
SHA512 b3f846177732e476913ad49adad331bde90bac46d9eb36801a638c383920d0ac8090bf9b589aaf9363e17eed17e91e2b3f85f42ea68cc8a49d67b0f11e19721e
SSDEEP 3072:96edUX3HEGHEprYfwkx7eBX1WmY11HgOUXZq7KTx:tumBsHgOeKKt
MD5 SHA1 SHA512 SSDEEP

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memory/2240-135-0x00000000005A0000-0x00000000005B6000-memory.dmp

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memory/3768-130-0x00000000004D0000-0x00000000004E6000-memory.dmp

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memory/3768-131-0x0000000000400000-0x00000000004C2000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads