b5bf9b891fdd046d626082bad71ef887a9fcafca9cdfd6887d2e60ef6d4a0462

Analysis

max time kernel
146s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/01/2024, 17:46

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General

Target

file.exe
Size

80KB
MD5

8d9e7695b942e570f84564345d736762
SHA1

e16022d7b4a5051c4bff6f8f23cf29ab0811c845
SHA256

b5bf9b891fdd046d626082bad71ef887a9fcafca9cdfd6887d2e60ef6d4a0462
SHA512

4031d726322cbb14ae84e60591d9c493495cf54e0028c86b3e1789b9885fce1fa577a47a5a1b5ca311b78e8b405f0d0149e44317d5e414d3e3e91d21dcf5f25f
SSDEEP

1536:P3Mz85SRJP1sW7jeWkfp52S2QyS9QafFFUheeeeeeeeWeeeee:kw5gPiOjeDxb2QyS9QafFF

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
1592	syspolrvcs.exe
2756	290462860.exe
2152	2434528534.exe

Loads dropped DLL 2 IoCs

pid	Process
1592	syspolrvcs.exe
1592	syspolrvcs.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"	syspolrvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1"	syspolrvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	syspolrvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	syspolrvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	syspolrvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	syspolrvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1"	syspolrvcs.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\\syspolrvcs.exe"	file.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\syspolrvcs.exe	file.exe
File opened for modification	C:\Windows\syspolrvcs.exe	file.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 1592	1956	file.exe	28
PID 1956 wrote to memory of 1592	1956	file.exe	28
PID 1956 wrote to memory of 1592	1956	file.exe	28
PID 1956 wrote to memory of 1592	1956	file.exe	28
PID 1592 wrote to memory of 2756	1592	syspolrvcs.exe	31
PID 1592 wrote to memory of 2756	1592	syspolrvcs.exe	31
PID 1592 wrote to memory of 2756	1592	syspolrvcs.exe	31
PID 1592 wrote to memory of 2756	1592	syspolrvcs.exe	31
PID 1592 wrote to memory of 2152	1592	syspolrvcs.exe	32
PID 1592 wrote to memory of 2152	1592	syspolrvcs.exe	32
PID 1592 wrote to memory of 2152	1592	syspolrvcs.exe	32
PID 1592 wrote to memory of 2152	1592	syspolrvcs.exe	32

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Windows\syspolrvcs.exe
  C:\Windows\syspolrvcs.exe
  2⤵
  - Windows security bypass
  - Executes dropped EXE
  - Loads dropped DLL
  - Windows security modification
  - Suspicious use of WriteProcessMemory
  PID:1592
- - C:\Users\Admin\AppData\Local\Temp\290462860.exe
    C:\Users\Admin\AppData\Local\Temp\290462860.exe
    3⤵
    - Executes dropped EXE
    PID:2756
- - C:\Users\Admin\AppData\Local\Temp\2434528534.exe
    C:\Users\Admin\AppData\Local\Temp\2434528534.exe
    3⤵
    - Executes dropped EXE
    PID:2152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads