b95f0e987c2f297cdb9335dabeb387ca97cdce6220f22839a3cae7e0f28cd762

Analysis

max time kernel
155s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23/11/2022, 20:17

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General

Target

b95f0e987c2f297cdb9335dabeb387ca97cdce6220f22839a3cae7e0f28cd762.dll
Size

81KB
MD5

1bb89bb83cc4a62d41a6ed52f67976f8
SHA1

b2db0493d371cc3282f61d89f6b2412ed86cc47b
SHA256

b95f0e987c2f297cdb9335dabeb387ca97cdce6220f22839a3cae7e0f28cd762
SHA512

b62aeca216adb8ba9222842b6ee4919ae5173a7b8bd074b3ddc29badbd55bb6ce686210717ff4dcf84a52ecd25e3056995551759c5eda879444092eb4398ca2c
SSDEEP

1536:QFB54A6pC2gp80f5zFi4NJO255Bvs5X1qS0D:QX54A6pCvdFiUJjHBU5X1qFD

Score

8^/10

persistence upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4916-134-0x0000000010000000-0x0000000010016000-memory.dmp	upx
behavioral2/memory/4916-135-0x0000000010000000-0x0000000010016000-memory.dmp	upx

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCDisable = "4294967197"	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
796	4916	WerFault.exe	80

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 4916	1700	rundll32.exe	80
PID 1700 wrote to memory of 4916	1700	rundll32.exe	80
PID 1700 wrote to memory of 4916	1700	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b95f0e987c2f297cdb9335dabeb387ca97cdce6220f22839a3cae7e0f28cd762.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b95f0e987c2f297cdb9335dabeb387ca97cdce6220f22839a3cae7e0f28cd762.dll,#1
  2⤵
  - Modifies WinLogon
  PID:4916
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4916 -s 752
    3⤵
    - Program crash
    PID:796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4916 -ip 4916
1⤵
PID:2568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4916-134-0x0000000010000000-0x0000000010016000-memory.dmp

Filesize
88KB

Download
memory/4916-135-0x0000000010000000-0x0000000010016000-memory.dmp

Filesize
88KB

Download